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SRI_NIC_PERM_SRC_1_19910112
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7/ap23-mon/dskalc.mac
There are 55 other files named dskalc.mac in the archive. Click here to see a list.
; Edit= 9015 to DSKALC.MAC on 8-Nov-88 by LOMARTIRE
;Merge Production changes to BUG text
; Edit= 8953 to DSKALC.MAC on 26-Aug-88 by LOMARTIRE
;Improve FSICFS description
; Edit= 8888 to DSKALC.MAC on 12-Aug-88 by RASPUZZI
;Update BUG. documentation.
; Edit= 8868 to DSKALC.MAC on 28-Jul-88 by GSCOTT
;Add new BUGINF LGSMIS if Login Structure is not found by FNDLGS.
; Edit= 8862 to DSKALC.MAC on 13-Jul-88 by GSCOTT, for SPR #21890
;DSKOP should not ITERR when the disk read or write fails.
; Edit= 8832 to DSKALC.MAC on 20-Apr-88 by RASPUZZI (TCO 7.1276)
;Install TCO 7.1276 into the autopatch sources.
;TCO 7.1276 - Wait for things to settle down before attempting to find the
; login structure. Also, use new bit U1.NOL to see if this is an
; OK unit to try.
; Edit= 8819 to DSKALC.MAC on 7-Apr-88 by LOMARTIRE (TCO 7.1267)
;Add password encryption question to /G143 dialog
;Add a question to the /G143 dialogue to allow user to enable password
;encryption (again)
; UPD ID= 8675, RIP:<7.MONITOR>DSKALC.MAC.11, 1-Mar-88 16:02:13 by GSCOTT
;TCO 7.1246 - Set ASAASG, DEAUNA, and ASGBPG normally not dumpable.
; UPD ID= 8655, RIP:<7.MONITOR>DSKALC.MAC.10, 18-Feb-88 21:08:09 by GSCOTT
;TCO 7.1230 - Lowercase messages now that CTY is a LA120 at the time message
; appears if SAVTRE is nonzero.
; UPD ID= 8507, RIP:<7.MONITOR>DSKALC.MAC.8, 9-Feb-88 14:58:39 by GSCOTT
;TCO 7.1218 - Update copyright notice.
; UPD ID= 8454, RIP:<7.MONITOR>DSKALC.MAC.7, 4-Feb-88 22:01:07 by GSCOTT
;More of TCO 7.1210 - Set LGSBBT, LGSBRD, LGSCCB, LGSCMR, LGSHBM, LGSMSU,
; LGSMTF, LGSMUN, LGSMXB, LGSNBT, LGSNIT, LGSNRD, and LGSWLK normally not
; dumpable.
; UPD ID= 8410, RIP:<7.MONITOR>DSKALC.MAC.6, 4-Feb-88 10:54:07 by GSCOTT
;TCO 7.1210 - Set BADBAT, DSKBT1, FEOCPB, NOBAT1, NOBAT2, SWPASF, and WRTCPB
; to be not normally dumpable.
; UPD ID= 244, RIP:<7.MONITOR>DSKALC.MAC.5, 4-Nov-87 16:39:59 by MCCOLLUM
;TCO 7.1112 - Implement Login Structure. Add routines FNDLGS, MNTLGS,
; and CHKUDB LGSERR. Fix up CKHOMU to look for a Login
; Structure or a Boot Structure. Fix FSIINI to deal with CKHOMU
; changes.
; UPD ID= 201, RIP:<7.MONITOR>DSKALC.MAC.4, 23-Oct-87 15:11:31 by GSCOTT
;TCO 7.1081 - Make public (boot) structure dumpable, turn off bit for
; when CRTSTR and ADDSTR are copying HOMFLG to SDBSTS.
; UPD ID= 124, RIP:<7.MONITOR>DSKALC.MAC.3, 23-Sep-87 15:43:05 by MCCOLLUM
;TCO 7.1063 - Check for STRX10 in DSKOP%
; *** Edit 7357 to DSKALC.MAC by RASPUZZI on 22-Aug-86
; Remove routine GAPRID since the processor serial number is already in APRSER
; and make all CALLs to GAPRID refer to that resident location.
; *** Edit 7352 to DSKALC.MAC by JROSSELL on 11-Aug-86, for SPR #21161
; Have .DSKOP return an error if an error occurs during a transfer
; *** Edit 7337 to DSKALC.MAC by LOMARTIRE on 23-Jul-86, for SPR #21239
; Prevent MDDJFN BUGHLTs
; *** Edit 7289 to DSKALC.MAC by MCCOLLUM on 24-Apr-86, for SPR #19581
; Fix code around CHKHOM/CKHOMU to find PS: correctly when bad structures exist
;
; *** Edit 7288 to DSKALC.MAC by MCCOLLUM on 23-Apr-86
; Remove edit 7228. We have decided not to implement it.
; *** Edit 7272 to DSKALC.MAC by WAGNER on 19-Mar-86, for SPR #21002
; *** PERFORMANCE *** Modify DSKASN so that adding pages to existing files will
; tend to stay contigous and so that new files will not compete with existing
; files for contiguous cylinders when structures and cylinders get full.
; Edit 7172 to DSKALC.MAC by MCCOLLUM on 25-Oct-85, for SPR #20513
; Set FB%NDL for non-directory files on <ROOT-DIRECTORY>
; Edit 7145 to DSKALC.MAC by WAGNER on 10-Sep-85, for SPR #19975 (TCO 6-1-1517)
; Modify documentation for ASAASG BUGCHKs to mention that redundant BAT block
; entries can also cause these BUGCHKs.
;TCO 6.1.1517 - Mention that ASAASGs can occur with redundant BAT block entries
; Edit 7120 to DSKALC.MAC by WAGNER on 9-Aug-85 (TCO 6-1-1508)
; Dont assign bittable entries for addresses in the maintenance cylinders
;TCO 6.1.1508 - Dont call DSKASA if address is in Maintainance area
; UPD ID= 2067, SNARK:<6.1.MONITOR>DSKALC.MAC.63, 3-Jun-85 14:31:50 by MCCOLLUM
;TCO 6.1.1406 - Update copyright notice.
; UPD ID= 2015, SNARK:<6.1.MONITOR>DSKALC.MAC.62, 28-May-85 12:03:23 by MCCOLLUM
;TCO 6.1.1238 - Fix BUG. documentation
; UPD ID= 1961, SNARK:<6.1.MONITOR>DSKALC.MAC.61, 13-May-85 09:16:09 by LOMARTIRE
;TCO 6.1.1373 - Record new MID in the UDB and SDB when homeblocks are changed
; UPD ID= 1911, SNARK:<6.1.MONITOR>DSKALC.MAC.60, 6-May-85 16:54:54 by TBOYLE
;TCO 6.1.1360 - BATS - Fix DOPAIR at DOPA1,CMNPAR,ADDPR to count by SECPAG.
; UPD ID= 1895, SNARK:<6.1.MONITOR>DSKALC.MAC.59, 4-May-85 15:45:09 by MCCOLLUM
;TCO 6.1.1238 - Fix more BUG. documentation
; UPD ID= 1875, SNARK:<6.1.MONITOR>DSKALC.MAC.58, 4-May-85 11:45:19 by MCCOLLUM
;TCO 6.1.1238 - Fix more BUG. documentation
; UPD ID= 1849, SNARK:<6.1.MONITOR>DSKALC.MAC.57, 30-Apr-85 13:29:57 by MCCOLLUM
;TCO 6.1.1238 - Fix more BUG. documentation
; UPD ID= 1753, SNARK:<6.1.MONITOR>DSKALC.MAC.56, 14-Apr-85 15:45:28 by LEACHE
;TCO 6.1.1321 define BOOT parameter word (HOMBTF) for home blocks
; UPD ID= 1727, SNARK:<6.1.MONITOR>DSKALC.MAC.55, 8-Apr-85 13:42:02 by MCCOLLUM
;TCO 6.1.1238 - Fix BUG. documentation
; UPD ID= 1589, SNARK:<6.1.MONITOR>DSKALC.MAC.54, 5-Mar-85 14:26:31 by HAUDEL
;TCO 6.1.1208 - Create a DSKBTTBL if one does not exist
; UPD ID= 1467, SNARK:<6.1.MONITOR>DSKALC.MAC.53, 3-Feb-85 16:33:32 by PAETZOLD
;6.1.1172 - Change OFNPTT to OFPTT to avoid conflict with new symbol in PROLOG.
; UPD ID= 1233, SNARK:<6.1.MONITOR>DSKALC.MAC.52, 20-Dec-84 13:46:34 by TBOYLE
;Change PDV... to PDB...
; UPD ID= 4931, SNARK:<6.MONITOR>DSKALC.MAC.51, 15-Oct-84 13:01:20 by GRANT
;The assembly switch CFSCOD has been eliminated
; UPD ID= 4806, SNARK:<6.MONITOR>DSKALC.MAC.50, 17-Sep-84 09:54:53 by PURRETTA
;Update copyright notice
; UPD ID= 4755, SNARK:<6.MONITOR>DSKALC.MAC.49, 27-Aug-84 08:27:38 by GRANT
;TCO 6.2200 - In FSIDI2, ask for channel, controller, unit in decimal and
;in FSICFG, display channel, controller, unit in decimal.
; UPD ID= 4723, SNARK:<6.MONITOR>DSKALC.MAC.48, 21-Aug-84 13:16:26 by TBOYLE
;TCO 6.2186 (QAR 706210) HRRZS A BEFORE CALLS TO CFFBBS, CFGBBS.
; UPD ID= 4400, SNARK:<6.MONITOR>DSKALC.MAC.47, 27-Jun-84 22:31:11 by MCLEAN
;CHANGES TO ADD PDB
; UPD ID= 4371, SNARK:<6.MONITOR>DSKALC.MAC.46, 22-Jun-84 10:01:41 by MCLEAN
;FIX BATQ WHEN LKBAT FAILS THE JRST TO BATQE IS WRONG
; UPD ID= 4262, SNARK:<6.MONITOR>DSKALC.MAC.45, 30-May-84 17:13:11 by MCLEAN
;FIX DECRSV ERROR FOR DOP%PS
; UPD ID= 4249, SNARK:<6.MONITOR>DSKALC.MAC.44, 29-May-84 22:12:23 by MCLEAN
;ADD SUPPORT FOR DOP%PS
; UPD ID= 4154, SNARK:<6.MONITOR>DSKALC.MAC.43, 30-Apr-84 16:39:21 by LOMARTIRE
;TCO 6.2028 - Prevent CHKRNR or DDMPNR by being NOSKED when getting BAT lock
; UPD ID= 3239, SNARK:<6.MONITOR>DSKALC.MAC.42, 30-Nov-83 21:25:37 by MCLEAN
;TCO 6.1888 MASK UNIT NUMBER FOR BAT BLOCKS TO 3 BITS
;THIS IS A FIX FOR RP20'S AND HSC'S.
; UPD ID= 2784, SNARK:<6.MONITOR>DSKALC.MAC.41, 2-Aug-83 15:40:05 by WEETON
;TCO 6.1612 - Add DA%AIN function to DSKAS JSYS
; UPD ID= 2049, SNARK:<6.MONITOR>DSKALC.MAC.40, 21-Mar-83 14:46:09 by MILLER
;TCO 6.1094. In DSKASN, do MAPBTF before looking at SDBFRC
; In GSTRPG, Call OFNTKN beofre looking at SDBFRC
; UPD ID= 2030, SNARK:<6.MONITOR>DSKALC.MAC.39, 20-Mar-83 10:17:04 by MILLER
;TCO 6.1094. Add GETFRC and STOFRC
; UPD ID= 2026, SNARK:<6.MONITOR>DSKALC.MAC.38, 19-Mar-83 08:11:12 by MILLER
;TCO 6.1094. CALL CFSSBB when a bit table is set up
; UPD ID= 1952, SNARK:<6.MONITOR>DSKALC.MAC.37, 9-Mar-83 15:52:24 by MILLER
;TCO 6.1520. Fix entry code for DEDSK and DEDSKM
; UPD ID= 1894, SNARK:<6.MONITOR>DSKALC.MAC.36, 1-Mar-83 15:09:16 by HALL
;TCO 6.1502 - Allow free space outside of section 0
; At least temporarily, make all callers request section 0
; UPD ID= 1872, SNARK:<6.MONITOR>DSKALC.MAC.35, 23-Feb-83 16:48:26 by MILLER
;TCO 6.1094. MNTPS changes
; UPD ID= 1862, SNARK:<6.MONITOR>DSKALC.MAC.34, 23-Feb-83 13:18:35 by MILLER
;tco 6.1520. preallocate disk pages
; UPD ID= 1754, SNARK:<6.MONITOR>DSKALC.MAC.33, 3-Feb-83 13:50:38 by GRANT
;TCO 6.1493 - use UNITS pool rather than GENERAL pool for resident free space
; UPD ID= 1593, SNARK:<6.MONITOR>DSKALC.MAC.32, 29-Dec-82 10:32:34 by DONAHUE
;TCO 6.1172 - Set exempt from migration bit for BITTABLE and FRONT-END-FILE-SYSTEM
; UPD ID= 1551, SNARK:<6.MONITOR>DSKALC.MAC.31, 21-Dec-82 10:57:32 by MAYO
; UPD ID= 1455, SNARK:<6.MONITOR>DSKALC.MAC.30, 17-Nov-82 15:03:59 by MCINTEE
;More TCO - 6.1010 change a CALL @T4 to a CALL (T4) in CKHOMU to stay local
; UPD ID= 1394, SNARK:<6.MONITOR>DSKALC.MAC.29, 1-Nov-82 10:39:47 by MILLER
;TCO 6.1094. Don't do CFS stuff if bit table is not a file
; UPD ID= 1385, SNARK:<6.MONITOR>DSKALC.MAC.28, 27-Oct-82 11:59:11 by DONAHUE
;TCO 6.1314 - Change the disk allocation algorithm to be more fair on multi-pack structures
; UPD ID= 1364, SNARK:<6.MONITOR>DSKALC.MAC.27, 21-Oct-82 16:59:42 by MILLER
;merge latest CFS changes (TCO 6.1094)
; UPD ID= 1344, SNARK:<6.MONITOR>DSKALC.MAC.26, 16-Oct-82 18:56:38 by MILLER
;TCO 6.1094 again
; UPD ID= 1334, SNARK:<6.MONITOR>DSKALC.MAC.25, 13-Oct-82 17:18:20 by MILLER
;More changes to UPDBTB for CFS
; UPD ID= 1309, SNARK:<6.MONITOR>DSKALC.MAC.24, 8-Oct-82 16:41:39 by MILLER
; UPD ID= 1286, SNARK:<6.MONITOR>DSKALC.MAC.23, 6-Oct-82 13:36:15 by MILLER
; UPD ID= 1257, SNARK:<6.MONITOR>DSKALC.MAC.22, 28-Sep-82 20:50:24 by MILLER
;Put delay in FSIINI to allow CFS connections to be established.
; UPD ID= 1235, SNARK:<6.MONITOR>DSKALC.MAC.21, 24-Sep-82 12:23:20 by LEACHE
;More of previous - search MONSYM
; UPD ID= 1233, SNARK:<6.MONITOR>DSKALC.MAC.20, 24-Sep-82 12:16:23 by LEACHE
;TCO 6.1273 Add MS%ASG and MS%MXB
; UPD ID= 1227, SNARK:<6.MONITOR>DSKALC.MAC.19, 23-Sep-82 23:47:56 by MILLER
;CFS stuff. Don't do UPDBTB if bit table resource not held locally
; UPD ID= 1191, SNARK:<6.MONITOR>DSKALC.MAC.18, 16-Sep-82 18:53:54 by CDUNN
;More TCO 6.1094 - Fix the CFS related BUG. for FSICFS
; UPD ID= 1172, SNARK:<6.MONITOR>DSKALC.MAC.17, 13-Sep-82 20:07:07 by MILLER
;TCO 6.1094. Add call to CFSSMT in FSIINI
; UPD ID= 1148, SNARK:<6.MONITOR>DSKALC.MAC.16, 7-Sep-82 10:38:27 by MILLER
;TCO 6.1255. Handle DBUGSW .GT. 2
; UPD ID= 1126, SNARK:<6.MONITOR>DSKALC.MAC.15, 31-Aug-82 22:31:53 by MILLER
;More TCO 6.1094. Fix UMPBTB
; UPD ID= 1101, SNARK:<6.MONITOR>DSKALC.MAC.14, 19-Aug-82 19:09:42 by LEACHE
;TCO 6.1233 Allow monitor to set DOP%EO only on multi-page transfers
; UPD ID= 1012, SNARK:<6.MONITOR>DSKALC.MAC.13, 28-Jul-82 21:34:15 by CDUNN
;TCO 6.1196 Allow use of DOP%EO flag in DSKOP. Add it to mask of allowed flags.
; UPD ID= 945, SNARK:<6.MONITOR>DSKALC.MAC.12, 17-Jun-82 11:48:52 by MILLER
;TCO 6.1094. Add CFS support
; UPD ID= 839, SNARK:<6.MONITOR>DSKALC.MAC.11, 4-Jun-82 22:02:34 by MURPHY
;TCO 6.1147 - Move bugdefs from BUGS.MAC to here and put them in-line.
; UPD ID= 135, SNARK:<6.MONITOR>DSKALC.MAC.10, 19-Oct-81 15:46:23 by COBB
;TCO 6.1029 - CHANGE SE1CAL TO EA.ENT
; UPD ID= 121, SNARK:<6.MONITOR>DSKALC.MAC.9, 17-Oct-81 17:13:05 by PAETZOLD
;TCO 6.1031 - Insert NOP after MSETPT call in WRTBTB
; UPD ID= 51, SNARK:<6.MONITOR>DSKALC.MAC.8, 12-Aug-81 13:39:00 by PAETZOLD
;TCO 5.1446 - FIX HOME BLOCK COPYING
; UPD ID= 36, SNARK:<6.MONITOR>DSKALC.MAC.7, 20-Jul-81 13:56:54 by MURPHY
;Fix args for SWPASF
; UPD ID= 12, SNARK:<6.MONITOR>DSKALC.MAC.6, 10-Jul-81 12:15:08 by MURPHY
;TCO 5.1398 - RETURN ERROR CODES ON DSKASN FAILURES
; UPD ID= 1842, SNARK:<6.MONITOR>DSKALC.MAC.5, 21-Apr-81 06:19:35 by WACHS
;TCO 5.1288 insert UDBVID in every unit of a structure
; UPD ID= 1630, SNARK:<6.MONITOR>DSKALC.MAC.4, 2-Mar-81 16:21:34 by HALL
;TCO 5.1264 - Don't let FSIASK go to section 0
; UPD ID= 1595, SNARK:<6.MONITOR>DSKALC.MAC.3, 27-Feb-81 07:21:01 by WACHS
;TCO 6.1002 - Add code for dual-ported disks
; UPD ID= 1594, SNARK:<6.MONITOR>DSKALC.MAC.2, 27-Feb-81 04:09:08 by WACHS
;TCO 5.1264 - Stay in section 1 after asking for name of Public Structure
; UPD ID= 899, SNARK:<5.MONITOR>DSKALC.MAC.11, 14-Aug-80 10:54:05 by LYONS
;TCO 5.1062 - Check ERRSWP, and bughlt if non zero
; UPD ID= 658, SNARK:<5.MONITOR>DSKALC.MAC.8, 16-Jun-80 17:23:01 by KONEN
;TCO 5.1063 -
;Look for home bloc;Add to home blocks the serial number of CPU a structure boots
; UPD ID= 638, SNARK:<5.MONITOR>DSKALC.MAC.7, 13-Jun-80 18:27:23 by DBELL
;CHANGE DSKSIZ TO UDBSIZ AT FSIDE1
; UPD ID= 612, SNARK:<5.MONITOR>DSKALC.MAC.6, 6-Jun-80 15:47:22 by SCHMITT
;TCO 5.1060 - Fix calc of size of BTB for struc during initialization
; UPD ID= 610, SNARK:<5.MONITOR>DSKALC.MAC.5, 6-Jun-80 13:57:26 by DBELL
;CHECK WRITE PROTECTION OF PAGES IN DSKOP PROPERLY
; UPD ID= 573, SNARK:<5.MONITOR>DSKALC.MAC.4, 31-May-80 22:46:09 by DBELL
;TCO 5.1048 - CHANGE DSKOP TO ALLOW MULTIPLE-PAGE TRANSFERS
; UPD ID= 391, SNARK:<4.1.MONITOR>DSKALC.MAC.19, 28-Mar-80 14:52:28 by DBELL
;FIX BUG DESCRIPTIONS FOR NOBAT1 AND NOBAT2 BUGCHKS
; UPD ID= 357, SNARK:<4.1.MONITOR>DSKALC.MAC.18, 26-Mar-80 11:06:21 by DBELL
;TCO 4.1.1119 - ADD SUPPORT FOR RP20 DISKS
; UPD ID= 321, SNARK:<4.1.MONITOR>DSKALC.MAC.17, 12-Mar-80 11:59:48 by KONEN
; UPD ID= 202, SNARK:<4.1.MONITOR>DSKALC.MAC.15, 15-Jan-80 10:50:47 by MILLER
;TCO 4.1.1067. FIX COMPUTATION OF SWAT ADDRESS AT DOBDRM
; UPD ID= 54, SNARK:<4.1.MONITOR>DSKALC.MAC.14, 29-Nov-79 10:41:34 by SCHMITT
;MORE OF TCO 4.2409, RESTORE D AFTER DSKASA
;<OSMAN.MON>DSKALC.MAC.1, 10-Sep-79 15:27:16, EDIT BY OSMAN
;TCO 4.2412 - Move definition of BUGHLTs, BUGCHKs, and BUGINFs to BUGS.MAC
;<4.MONITOR>DSKALC.MAC.12, 7-Sep-79 10:37:47, EDIT BY SCHMITT
;JUST CLEANING UP PREVIOUS EDIT
;<4.MONITOR>DSKALC.MAC.11, 17-Aug-79 10:39:46, EDIT BY SCHMITT
;TCO 4.2409-EDIT TO CURE ASAASG & ASGBPG BUGCHECK DURING BIT TABLE INIT
;<4.MONITOR>DSKALC.MAC.10, 2-May-79 08:13:11, Edit by KONEN
;CHANGE JOB TO FORK IN SDBSTS FOR INITING A STRUCTURE
;<4.MONITOR>DSKALC.MAC.9, 17-Apr-79 15:47:50, EDIT BY DBELL
;TCO 4.2251 - ROUND BAT BLOCK ENTRIES DOWN TO PAGE BOUNDARIES.
;<4.MONITOR>DSKALC.MAC.8, 19-Mar-79 13:51:01, EDIT BY HALL
;GETBTB - BE NOINT WHEN WE HAVE JSB FREE SPACE
;<4.MONITOR>DSKALC.MAC.7, 4-Mar-79 15:27:50, EDIT BY KONEN
;UPDATE COPYRIGHT FOR RELEASE 4
;<4.MONITOR>DSKALC.MAC.5, 8-Jan-79 06:42:59, EDIT BY GILBERT
;TCO 4.2155 - Implement hidden symbol tables:
; Change PSECT bounds symbols.
; Change BUTPGA to HOMPGA.
;FIX REDHOM ROUTINE SO ADDRESSES LESS THAN 400000 DON'T CAUSE SECG37
;<4.MONITOR>DSKALC.MAC.4, 15-Oct-78 00:07:18, EDIT BY ZIMA
;TCO 4.2044 FIX CPYH1/CPYH2 TO WRITE CORRECT HOMHOM WORD
;<4.MONITOR>DSKALC.MAC.3, 12-Oct-78 01:11:04, EDIT BY ZIMA
;TCO 4.2041 FIX ADDPR TO USE THE LAST BAT BLOCK ENTRY
;<3A.MONITOR>DSKALC.MAC.11, 24-Jul-78 22:56:16, Edit by MCLEAN
;FIX DSKASG NOT TO LOOSE Q1
;<4.MONITOR>DSKALC.MAC.8, 6-May-78 21:26:06, Edit by MCLEAN
;ADD RP07
; COPYRIGHT (c) DIGITAL EQUIPMENT CORPORATION 1976, 1988.
; ALL RIGHTS RESERVED.
;
; THIS SOFTWARE IS FURNISHED UNDER A LICENSE AND MAY BE USED AND COPIED
; ONLY IN ACCORDANCE WITH THE TERMS OF SUCH LICENSE AND WITH THE
; INCLUSION OF THE ABOVE COPYRIGHT NOTICE. THIS SOFTWARE OR ANY OTHER
; COPIES THEREOF MAY NOT BE PROVIDED OR OTHERWISE MADE AVAILABLE TO ANY
; OTHER PERSON. NO TITLE TO AND OWNERSHIP OF THE SOFTWARE IS HEREBY
; TRANSFERRED.
;
; THE INFORMATION IN THIS SOFTWARE IS SUBJECT TO CHANGE WITHOUT NOTICE
; AND SHOULD NOT BE CONSTRUED AS A COMMITMENT BY DIGITAL EQUIPMENT
; CORPORATION.
;
; DIGITAL ASSUMES NO RESPONSIBILITY FOR THE USE OR RELIABILITY OF ITS
; SOFTWARE ON EQUIPMENT THAT IS NOT SUPPLIED BY DIGITAL.
SEARCH MONSYM,PROLOG,PHYPAR
TTITLE DSKALC
Subttl Table of Contents
; Table of Contents for DSKALC
;
; Section Page
;
;
; 1. Storage and Constants . . . . . . . . . . . . . . . . 5
; 2. DSKASN - Assign page on disk . . . . . . . . . . . . . 6
; 3. DSKASA - Assign specific disk address . . . . . . . . 11
; 4. DSKASG - Assign specific disk address or cylinder . . 12
; 5. DEDSKC - Deassign disk address . . . . . . . . . . . . 14
; 6. DEDSK - Deassign a specific address, ignoring BAT bloc 15
; 7. DSKDEA - Deassign a specific address, ignoring bad blo 16
; 8. CHKBAD - Check if address is in BAT blocks . . . . . . 18
; 9. RDBAT - Read in BAT blocks for unit . . . . . . . . . 20
; 10. SEEADR - Search for address in BAT block . . . . . . . 21
; 11. BATSPC - Count space in BAT block . . . . . . . . . . 22
; 12. LKBAT - Lock/unlock bat blocks . . . . . . . . . . . . 23
; 13. BATTST - Scheduler test for bat block available . . . 24
; 14. ULKBAT - Unlock a bat block . . . . . . . . . . . . . 25
; 15. DSKGX - Compute index into bit table . . . . . . . . . 26
; 16. CRTBTB - Create the bit table . . . . . . . . . . . . 27
; 17. INIBTB - Initialize bit table . . . . . . . . . . . . 28
; 18. WRTBTB - Write the bit table . . . . . . . . . . . . . 34
; 19. MNTBTB - Mount the bit table . . . . . . . . . . . . . 38
; 20. MAPBTB - Map the bit table . . . . . . . . . . . . . . 40
; 21. UMPBTB - Unmap the bit table . . . . . . . . . . . . . 42
; 22. LCKBTB - Lock bit table . . . . . . . . . . . . . . . 43
; 23. GETBTB - Get a JFN on the bit table file . . . . . . . 44
; 24. DSKINC - Increment a disk address. . . . . . . . . . . 46
; 25. .DSKAS - Disk assignment control jsys . . . . . . . . 47
; 26. DSKSP - Get disk usage statistics . . . . . . . . . . 52
; 27. .GDSKC - JSYS to get count of free pages on a structur 53
; 28. CHKSTR - Convert device designator to structure number 54
; 29. GSTRPG - Get page counts for a structure . . . . . . . 55
; 30. GETFRC - Get structure free count . . . . . . . . . . 56
; 31. STOFRC - Store free count . . . . . . . . . . . . . . 57
; 32. .DSKOP - Disk Operate JSYS . . . . . . . . . . . . . . 58
; 33. CHKBT - Check consistency of bit table . . . . . . . . 62
; 34. CHKB0 - Check free page count . . . . . . . . . . . . 63
; 35. UPDBTB - Update bit table . . . . . . . . . . . . . . 65
; 36. BOTSYS/FEFSYS - Allocate the FE file system . . . . . 66
; 37. WRBOOT - Write FE boot block . . . . . . . . . . . . . 75
; 38. FEWRTH/BOWRTH - Write the Home Blocks . . . . . . . . 77
; 39. FIXBOT/Fixfes - fix home blocks for special files . . 79
; 40. GTFESZ/GTBTSZ - Get size of special file . . . . . . . 82
; 41. VERBAT - Verify the BAT blocks . . . . . . . . . . . . 85
; 42. BATQ - Mark a disk BAT for SYSERR . . . . . . . . . . 86
; 43. SWPASN - Assign the swapping blocks . . . . . . . . . 90
; 44. MNTPS - Start-up routine to mount the boot structure . 91
; 45. CHKHOM - Read all Home Blocks and check their consiste 95
Subttl Table of Contents (page 2)
; Table of Contents for DSKALC
;
; Section Page
;
;
; 46. CHKHOM error conditions
; 46.1 CHKH11 - Errors in single unit . . . . . . . . 98
; 46.2 CHKH40 - Problems with a structure . . . . . . 100
; 47. FNDLGS - Find and mount a Login Structure . . . . . . 101
; 48. MNTLGS - Register the Login Structure with CFS . . . . 113
; 49. LGSERR - Clean up after MNTLGS failure . . . . . . . . 114
; 50. CHKHOM - Examine a disk unit at startup . . . . . . . 115
; 51. CHKUDB - Verufy a UDB for CKHOMU . . . . . . . . . . . 118
; 52. BLDSTR - Build SDB and set up STRTAB . . . . . . . . . 119
; 53. ADDSTR - Add a unit to an existing SDB . . . . . . . . 120
; 54. CRTSTR - Create a new SDB . . . . . . . . . . . . . . 121
; 55. FIXVID - Fix up UDBVID . . . . . . . . . . . . . . . . 124
; 56. CLRSTB - Clear an entry in STRTAB . . . . . . . . . . 125
; 57. GETTYP - Get type of disk . . . . . . . . . . . . . . 126
; 58. BLDNEW/BLDSDB - Create or add to an SDB . . . . . . . 127
; 59. REMSTR - Remove a structure from STRTAB . . . . . . . 128
; 60. UNIBAT - Check the BAT blocks on a unit . . . . . . . 129
; 61. CRTHOM - Create a pair of new Home Blocks . . . . . . 130
; 62. REDHOM - Read in the primary and backup Home Blocks . 133
; 63. HBCCHK - Check Home Block consistency . . . . . . . . 134
; 64. CPYH1/CPYH2 - Correct one incorrect Home Block . . . . 135
; 65. WRTHOM - Write all Home Blocks in Public Structure . . 137
; 66. WRTHB - Write a home block . . . . . . . . . . . . . . 138
; 67. SWPHOM - Swap the Home or BAT blocks . . . . . . . . . 139
; 68. SETHOM - Setup first Home Block on a unit . . . . . . 140
; 69. MODHOM - Modify the Home Blocks . . . . . . . . . . . 142
; 70. UPDHOM - Update the Home Blocks . . . . . . . . . . . 144
; 71. CHKBAT - Check all BAT blocks on a structure . . . . . 145
; 72. DOPACK - Check the BAT blocks on a single unit . . . . 148
; 73. UNTSTR - Routine to output structure/unit message . . 150
; 74. BATCMP - Compare two BAT blocks . . . . . . . . . . . 151
; 75. GETBAT - Read the BAT blocks into a buffer . . . . . . 152
; 76. BATOUT - Write out the BAT blocks for a drive . . . . 153
; 77. BATLOK - Check the BAT block . . . . . . . . . . . . . 155
; 78. FSIDIA - Diaglogue to define the public structure . . 156
; 79. FSICFG - Type out configuration of units . . . . . . . 164
; 80. CPY1/CPY2 - Correct one incorrect BAT block . . . . . 166
; 81. FSIBAT - Once only code for the BAT blocks . . . . . . 167
; 82. FNDCHN/FNDCH1 - Find the CKU numbers for a pack . . . 170
; 83. MAKBAT - Create and write out new BAT blocks . . . . . 171
; 84. CHKSWP - Validate a swapping structure . . . . . . . . 173
; 85. CMPSWP - Compute swapping pages . . . . . . . . . . . 174
Subttl Table of Contents (page 3)
; Table of Contents for DSKALC
;
; Section Page
;
;
; 86. I/O Routines
; 86.1 FSICPY - Copy one string to another . . . . . 175
; 86.2 FSIDTY/FSIOTY - Type out a number . . . . . . 176
; 86.3 FSINST - Convert a number to an ASCIZ string . 177
; 86.4 FSIASK - Ask a question and get an answer . . 178
; 86.5 FSIYNO - Get a yes or no answer . . . . . . . 179
; 86.6 FSISIX - Read in a SIXBIT name . . . . . . . . 180
; 86.7 FSI6TY - Type out a SIXBIT name . . . . . . . 181
; 86.8 FSIOCT/FSIDEC - Get a signed number . . . . . 182
; 86.9 FSIRUB - Type out rubout string . . . . . . . 184
; 86.10 FSIPSO - Type out a string . . . . . . . . . . 185
; 86.11 FSIBPI - Read in a character . . . . . . . . . 186
; 86.12 FSIPBO - Output a character . . . . . . . . . 187
; 86.13 FSIPSW - Print help text for swapping default 188
; 87. End of DSKALC . . . . . . . . . . . . . . . . . . . . 189
SUBTTL Storage and Constants
;NO SPECIAL AC'S USED HEREIN
SWAPCD
;DEVICE INDEPENDENT DISK RELATED STUFF - D. MURPHY
;STORAGE
;RS LSTTKA,1 ;LAST TRACK ASSIGNED
;RS DSKFRC,1 ;TOTAL FREE PAGES ON DISK
;RS DSKALK,1 ;LOCK AGAINST DISK ASSIGNMENTS
.DPREA==3 ;Default number of pages to preallocate
SUBTTL DSKASN - Assign page on disk
;DSKASN - ASSIGN PAGE ON DISK
;IF AC1 .NE 0, AC1 IS DISK ADDRESS - ASSIGN FROM SAME TRACK
;OTHERWISE, ASSIGN FROM A TRACK WITH .GE MINFPG FREE PAGES. START
;SEARCHING AT SDBLCA, EXAMINE TRACK N ON ALL DRIVES, THEN TRACK
;N+1 ON ALL DRIVES, ETC.
;ACCEPTS:
; T1/SECTOR NUMBER ON DISK RELATIVE TO START OF STRUCTURE OR ZERO
; T2/STRUCTURE NUMBER
;RETURNS +1: FAILURE
; +2: SUCCESS
; T1/DISK ADDRESS ASSIGNED
;USE OF Q REGISTERS:
; Q1/ADDRESS OF SIZE DATA FOR THIS DISK TYPE
; Q2/ADDRESS OF SDB FOR THIS STRUCTURE
; Q3/CURRENT CYLINDER NUMBER
DSKAWM::MOVSI T4,.DPREA ;preallocate pages
JN SF%DPR,FACTSW,DSKASX ;If doing so proceed, else, do other case
DSKASW::TDZA T4,T4 ;REMEMBER ENTRY, no preallocation
DSKASN::MOVEI T4,1
DSKASX: SAVEQ
EA.ENT ;FORCE SECTION 1
STKVAR <STRN00,MINFRE,DSKAZZ,DSKACT,DSKEXT,DSKMUF> ;[7272]
HLRZM T4,DSKMUF ;Store count of pages to preallocate
HRRZM T4,DSKAZZ ;Store CFS flag
MOVEM 2,STRN00 ;SAVE STRUCTURE NUMBER
MOVEM 1,Q3 ;SAVE DISK ADDRESS
MOVE Q2,STRTAB(2) ;GET ADDRESS OF SDB FOR THIS STRUCTURE
MOVX T4,MS%ASG ;IF ASSIGNMENTS ARE PROHIBITED BECAUSE BIT
TDNE T4,SDBSTS(Q2) ; TABLE IS BAD OR DOESN'T EXIST,
RETBAD IOX35 ;TAKE THE FAILURE RETURN
MOVE Q1,SDBTYP(Q2) ;GET ADDRESS OF DSKSIZ TABLE
MOVE 1,2 ;1/STRUCTURE NUMBER
; IFN CFSCOD,<
SKIPE DSKAZZ
IFSKP.
CALL MAPBTF ;FAIL IF NEED TO RESCHED
IFNSK.
SETZM T1 ;SAY WE DID A RESCHED
RETSKP
ENDIF.
ELSE.
CALL MAPBTB ;MAP INDEX BLOCK INTO BTBBAS
ENDIF.
; > ;IFN CFSCOD
;...
MOVE T1,STRN00 ;Recover structure number
CAIE T1,PSNUM ;IS THIS PS?
IFSKP.
MOVX T2,SC%WHL!SC%OPR ;Check if privileged
TDNE T2,CAPENB ;Is it?
ANSKP.
MOVE T2,SDBFRC(Q2) ;Get current free count
CAMLE T2,SYSSPC ;ABOVE MIN FREE?
ANSKP. ;If not
CALL UMPBTB ;Release Bit table
RETBAD IOX34 ;NO, ERROR DISK FULL
ENDIF.
MOVE 1,Q3 ;RESTORE DISK ADDRESS
MOVE 4,BTBORA ;ADDRESS OF START OF BIT TABLE
JUMPE 1,DSKA1 ;FREE CHOICE
;USER REQUESTED A SPECIFIC ADDRESS. TRY TO GET A PAGE ON THE SAME
;CYLINDER. IF NO PAGE IS FREE, INTERLEAVE TRACKS ON ALL UNITS
TLZ 1,DSKMSK ;FLUSH GARBAGE BITS
IDIV 1,SECCYL(Q1) ;1/CYLINDER, 2/SECTOR WITHIN CYLINDER
CAMG 1,SDBCYL(Q2) ;WITHIN CYLINDER LIMIT FOR STRUCTURE?
CAIGE 1,LOTRK ;NON-NEGATIVE CYLINDER NUMBER?
JRST DSKA1 ;NO, USE FREE CHOICE ALGORITHM
ADD 4,1 ;POINT TO BIT TABLE WORD FOR THIS TRACK
SKIPN 0(T4) ;ANY PAGES FREE ON THIS TRACK?
JRST DSKSQ ;[7272] NO, FIND ONE NEARBY
; ..
;A CYLINDER HAS BEEN SELECTED
; T1/CYLINDER NUMBER
; T4/ADDRESS OF WORD IN BIT TABLE CONTAINING THE NUMBER OF FREE PAGES
DSKA9: MOVEM 1,Q3 ;SAVE TRACK NUMBER
IMUL 1,BTWCYL(Q1) ;COMPUTE OFFSET OF START OF BITS FOR THIS TRACK
ADD 1,BTBORA ;COMPUTE ADDRESS IN BIT TABLE
ADD 1,SDBBT0(Q2) ;ADD SIZE OF TOP HALF
SETZ 2, ;INITIALIZE COUNT OF BITS
;LOOP THROUGH BIT WORDS FOR THIS CYLINDER, FINDING THE FIRST WORD
;WITH AT LEAST ONE 'ON' BIT, INDICATING A FREE PAGE
DSKA2: SKIPE 3,0(1) ;ANY FREE PAGES THIS WORD?
JRST DSKA3 ;YES
ADDI 2,^D36 ;NO. NOTE 36 BITS HAVE BEEN CHECKED
CAML 2,PAGCYL(Q1) ;LOOKED AT BITS FOR ALL PAGES?
SKIPA ;YES. COULDN'T FIND A FREE PAGE
AOJA 1,DSKA2 ;NO. GO LOOK AT THE NEXT WORD OF BITS
;FOUND A CYLINDER WHOSE FREE COUNT IS NON-ZERO, AND ITS BITS INDICATE NO
;FREE PAGES. WARN THE OPERATOR AND PROHIBIT ASSIGNMENTS AND DEASSIGNMENTS
MOVE T1,STRN00 ;T1/ STRUCTURE NUMBER
MOVE T2,STRTAB(T1) ;POINT TO SDB FOR THIS STRUCTURE
LOAD T2,STRUC,(T2) ;GET UNIQUE CODE FOR THIS STRUCTURE
MOVE T3,Q3 ;GET CYLINDER NUMBER
BUG.(CHK,DSKBT1,DSKALC,HARD,<DSK bit table fouled, cannot find free page on track with non-0 count>,<<T2,STRCOD>,<T3,CYLNDR>>,<
Cause: The bit table for this disk cylinder indicated there
were free pages for assignment. However, none could be
found.
Action: Find out which structure this is for and run CHECKD on the disk.
Then check the consistency of bits of the disk.
Data: STRCOD - Structure Unique Code
CYLNDR - Cylinder Number
>,,<DB%NND>) ;[7.1210]
MOVX T3,MS%ASG ;SET BIT IN STRUCTURE STATUS WORD
IORM T3,SDBSTS(Q2) ; TO PROHIBIT ASSIGNMENTS AND DEASSIGNMENTS
CALL UMPBTB ;UNMAP INDEX BLOCK FROM BTBBAS, UNLOCK CORE PAGE
; UNLOCK BTBLCK, GO OKSKED
RETBAD IOX35 ;TAKE FAILURE RETURN
;HERE WHEN FREE PAGE HAS BEEN FOUND. MARK IF OFF IN THE BIT TABLE
;CONVERT IT TO A SECTOR NUMBER TO RETURN TO THE CALLER
; T1/ADDRESS OF WORD IN BIT HALF OF BIT TABLE
; T2/PAGE NUMBER WITHIN CYLINDER FOR BIT 0 OF CURRENT BIT WORD
; T3/CONTENTS OF WORD
; T4/ADDRESS OF TRACK COUNT WORD IN BT
; Q2/ADDRESS OF SDB
; Q1/ADDRESS OF SIZE DATA FOR THIS DISK TYPE
DSKA3: SOS 0(T4) ;One less if here
SOS SDBFRC(Q2) ;And one less on the structure
MOVEM T4,DSKEXT ;Save track count word
MOVEI T4,1 ;One page
MOVEM T4,DSKACT ;init count
JFFO 3,.+1 ;FIND FIRST FREE BLOCK
MOVE 3,BITS(4) ;MAKE IT NO LONGER FREE
ANDCAM 3,0(1) ;CLEAR BIT
ADDI 2,0(4) ;PAGE NUMBER WITHIN THIS TRACK
SKIPN DSKMUF ;Want to do preallocation?
IFSKP. ;If so
EXCH Q3,DSKMUF ;Save a reg. Get count to preallocate
MOVE T4,DSKEXT ;Recover track count word
DO. ;Look for others
LSH T3,-1 ;next bit please
JUMPE T3,ENDLP. ;If at the end, done
SKIPE 0(T4) ;Any more here?
TDNN T3,0(1) ;This one free too?
EXIT. ;No
ANDCAM T3,0(T1) ;yes. get it
SOS SDBFRC(Q2) ;One less, again
SOS 0(T4) ;And one less here too
AOS DSKACT ;Another one
SOJG Q3,TOP. ;Do more if we can
ENDDO.
MOVE Q3,DSKMUF ;Recover register
ENDIF.
IMUL 2,SECPAG(Q1) ;CONVERT TO SECTOR NUMBER
MOVE 1,Q3 ;RECOVER CYLINDER NUMBER
IMUL 1,SECCYL(Q1) ;COMPUTE LINEAR ADDRESS
ADD 1,2
TLO 1,(DSKAB) ;INDICATE DISK ADDRESS, NEWLY ASSIGNED
MOVEM 1,Q3 ;SAVE DISK ADDRESS
MOVE 1,STRN00 ;1/STRUCTURE NUMBER
CALL UMPBTB ;UNMAP INDEX BLOCK FROM BTBBAS, UNLOCK CORE PAGE
; UNLOCK BTBLCK, GO OKSKED
MOVE 1,Q3 ;RESTORE DISK ADDRESS
MOVE T2,DSKACT ;return count as well
RETSKP
;THE SEARCH FOR THE BEST TRACK (DSKASN)
; Q2/ADDRESS OF SDB
; Q1/ADDRESS OF SIZE DATA FOR THIS DISK TYPE
DSKA1: MOVE T1,SDBMFP(Q2) ;[7272] FREE CHOICE, USE CURRENT STRUCTURE
MOVEM T1,MINFRE ;[7272] MINIMUM
SKIPA T1,SDBLCA(Q2) ;[7272] AND START WITH LAST CYLINDER ASSIGNED
DSKSQ: SETZM MINFRE ;[7272] SPECIFIED...PICK NEARBY, NO MIN CYLINDER
SETZ T4, ;[7272] TO RECORD MAX FREE FOUND
MOVE T3,SDBCYL(Q2) ;[7272] NUMBER CYLINDERS TO LOOK AT
DSKA6: ADD T1,CYLUNT(Q1) ;[7272] LOOK AT NEXT UNIT (TO BALANCE I/O)
CAML T1,SDBCYL(Q2) ;[7272] LOOKING WITHIN KNOWN CYLINDERS?
AOJA T1,[IDIV T1,CYLUNT(Q1) ;[7272] NO, LOOK ON NEXT TRACK, PACK ZERO
MOVEI T1,(2) ;[7272] ...
JRST .+1] ;[7272] ...
MOVE 2,BTBORA ;POINT TO START OF BIT TABLE
ADD 2,1 ;POINT TO WORD FOR THIS TRACK
CAML 4,0(2) ;THIS TRACK HAVE .G THAN BEST SO FAR?
JRST DSKA4 ;NO
MOVE 4,0(2) ;YES, REMEMBER COUNT
MOVEM 1,SDBLCA(Q2) ;REMEMBER WHAT TRACK HAD IT
CAML T4,MINFRE ;[7272]GOOD ENOUGH TO QUIT?
JRST DSKA8 ;YES
DSKA4: SOJG 3,DSKA6 ;[7272] COUNT TRACKS EXAMINED
MOVEM 4,SDBMFP(Q2) ;REMEMBER NEW LOW VALUE
JUMPE 4,[MOVE 1,STRN00 ;IF ZERO, FOUND NO TRACK WITH FREE PAGE
CALL UMPBTB ;UNMAP INDEX BLOCK FROM BTBBAS, UNLOCK CORE PAGE
; UNLOCK BTBLCK, GO OKSKED
MOVE 1,Q3 ;RETURN ADDRESS REQUESTED
RETBAD IOX34] ;DISK FULL
DSKA8: MOVE 1,SDBLCA(Q2) ;GET TRACK
MOVE 4,BTBORA ;POINT TO START OF BIT TABLE
ADD 4,1 ;POINT TO WORD OF FREE PAGES FOR THIS TRACK
JRST DSKA9 ;GO SELECT PAGE ON THIS TRACK
SUBTTL DSKASA - Assign specific disk address
;DSKASA - ASSIGN SPECIFIC DISK ADDRESS
;CYLASA - ASSIGN SPECIFIC CYLINDER (1 CYL OF DISK ADDRESSES)
;ACCEPTS:
; T1/SECTOR NUMBER ON DISK RELATIVE TO START OF STRUCTURE
; T2/STRUCTURE NUMBER
;RETURNS +1: FAILURE
; T1/ERROR CODE
; +2: SUCCESS
; T1/ DISK ADDRESS ASSIGNED
;THIS ROUTINE IS CALLED BY MONITOR CODE. IT BUGCHKS IF THE PAGE
;WAS ALREADY ASSIGNED
CYLASA::TDZA T3,T3 ;SAY CYLINDER
DSKASA::SETO T3,0 ;SAY SINGLE ADDRESS
ASUBR<DSKAD1,STRN20>
EA.ENT ;FORCE SECTION 1
CALL DSKASG ;GO DO THE ASSIGNMENT
JRST [ CAIE T1,DSKX08 ;FAILED. WAS IT ALREADY ASSIGNED?
RETBAD ;NO. SOME OTHER ERROR. DON'T BUGCHK
EXCH T1,STRN20 ;YES. GET STRUCTURE NUMBER AND SAVE ERROR
HRRZ T1,STRTAB(T1) ;POINT TO ITS SDB
LOAD T1,STRUC,(T1) ;GET ITS UNIQUE CODE
MOVE T2,DSKAD1 ;GET REQUESTED DISK ADDRESS
BUG.(CHK,ASAASG,DSKALC,SOFT,<DSKASA - Assigning already assigned disk address>,<<T1,STRCOD>,<T2,SECTOR>>,<
Cause: The sector being assigned on the disk is already assigned.
This may happen during creation of structure when assigning
swapping space, and the sector is already assigned in the
BAT blocks. This can also be caused by redundant BAT block entries.
Data: STRCOD - Structure Unique Code
SECTOR - Sector Number on Disk Relative to Start of Structure
>,,<DB%NND>) ;[7.1246]
MOVE T1,STRN20 ;RETRIEVE ERROR CODE
RETBAD] ;TAKE ERROR RETURN
RETSKP ;SUCCESS
SUBTTL DSKASG - Assign specific disk address or cylinder
;DSKASG - ASSIGN SPECIFIC DISK ADDRESS OR CYLINDER
;ACCEPTS:
; T1/SECTOR NUMBER ON DISK RELATIVE TO START OF STRUCTURE
; T2/STRUCTURE NUMBER
; T3/ -1 IF SINGLE DISK ADDRESS, 0 IF CYLINDER
;RETURNS +1: FAILURE
; T1/ERROR CODE
; +2: SUCCESS
; T1/ DISK ADDRESS ASSIGNED
;THIS ROUTINE IS CALLED DIRECTLY BY THE DSKAS JSYS. IT DOES NOT BUGCHK
;WHEN AN ADDRESS IS PASSED FOR A PAGE THAT IS ALREADY ASSIGNED. THIS
;IS BECAUSE CHECKD DELIBERATELY DOES THE DSKAS JSYS FOR PAGES THAT ARE
;ASSIGNED. IT DOES BUGCHK ON ILLEGAL DISK ADDRESS.
DSKASG: STKVAR <STRN01,DSKADR,ASGTYP>
MOVEM T1,DSKADR ;SAVE DISK ADDRESS
MOVEM T2,STRN01 ;SAVE STRUCTURE NUMBER
MOVEM T3,ASGTYP ;SAVE TYPE OF ASSIGN
MOVE T3,STRTAB(T2) ;POINT TO SDB FOR THIS STRUCTURE
MOVX T4,MS%ASG ;IF ASSIGNMENTS ARE PROHIBITED BECAUSE BIT
TDNE T4,SDBSTS(T3) ; TABLE IS BAD OR DOESN'T EXIST,
RETBAD (DSKX05) ; TAKE THE FAILURE RETURN
MOVE T1,T2 ;T1/STRUCTURE NUMBER
CALL MAPBTB ;MAP INDEX BLOCK INTO BTBBAS, LOCK INTO CORE,
; LOCK BTBLCK, GO NOSKED
MOVE T1,DSKADR ;T1/DISK ADDRESS
MOVE T2,STRN01 ;T2/STRUCTURE NUMBER
CALL DSKGX ;COMPUTE LOCATION IN BIT TABLE
; T1/OFFSET IN BIT PART OF BITTABLE, T2/TRACK
; NUMBER, T3/WORD CONTAINING BIT FOR THIS PAGE
JRST DSKAA2 ;BAD ADDRESS
EXCH Q1,ASGTYP ;GET TYPE
MOVE T4,STRN01 ;GET STRUCTURE NUMBER
MOVE T4,STRTAB(T4) ;POINT TO START OF SDB FOR THIS STRUCTURE
ADD T1,SDBBT0(T4) ;COMPUTE OFFSET IN BIT TABLE FOR BIT WORD
ADD T1,BTBORA ;COMPUTE ADDRESS OF BIT WORD
ADD T2,BTBORA ;POINT TO WORD CONTAINING FREE PAGE COUNT
JUMPN Q1,DSKAA3 ;ONLY SINGLE PAGE
MOVE Q1,SDBTYP(T4) ;FIND DISK TYPE
MOVE Q1,PAGCYL(Q1) ;GET PAGES PER CYL
;...
DSKAA3: TDNN 3,0(T1) ;PAGE FREE?
JRST DSKAA1 ;NO. RETURN BAD
ANDCAM T3,0(T1) ;YES. ASSIGN IT
SOS 0(T2) ;REDUCE FREE COUNT FOR TRACK
SOS SDBFRC(T4) ;REDUCE FREE PAGE COUNT FOR STRUCTURE
SOJLE Q1,DSKATX ;DONE IF Q1 <0
ROT T3,-1 ;SHIFT 1 BIT
JUMPG T3,DSKAA3 ;DO NEXT BIT
AOJA T1,DSKAA3 ;NEXT WORD
DSKATX: EXCH Q1,ASGTYP ;RESTORE Q1
MOVE T1,STRN01 ;T1/STRUCTURE NUMBER
CALL UMPBTB ;UNMAP INDEX BLOCK FROM BTBBAS, UNLOCK CORE PAGE,
; UNLOCK BTBLCK, GO OKSKED
MOVE T1,DSKADR ;RESTORE SECTOR NUMBER
RETSKP ;TAKE SUCCESSFUL RETURN
;PAGE WAS ALREADY ASSIGNED
DSKAA1: EXCH Q1,ASGTYP ;RESTORE Q1
MOVE T1,STRN01 ;T1/STRUCTURE NUMBER
CALL UMPBTB ;UNMAP INDEX BLOCK FROM BTBBAS, UNLOCK CORE PAGE,
; UNLOCK BTBLCK, GO OKSKED
RETBAD (DSKX08) ;INDICATE PAGE ALREADY ASSIGNED
;ILLEGAL ADDRESS WAS SPECIFIED. GIVE BUGCHK AND TAKE FAILURE RETURN
DSKAA2: MOVE T1,STRN01 ;T1/STRUCTURE NUMBER
HRRZ T3,STRTAB(T1) ;POINT TO THE SDB FOR THIS STRUCTURE
LOAD T3,STRUC,(T3) ;GET ITS UNIQUE CODE
MOVE T2,DSKADR ;GET REQUESTED ADDRESS
BUG.(CHK,ASGBAD,DSKALC,SOFT,<DSKASA - Assigning bad disk address>,<<T3,STRCOD>,<T2,SECTOR>>,<
Cause: The sector being assigned was not within the legal range
of sector numbers.
Data: STRCOD - Structure Unique Code
SECTOR - Sector Number on Disk Relative to Start of Structure
>)
CALL UMPBTB ;UNMAP INDEX BLOCK FROM BTBBAS, UNLOCK CORE PAGE,
; UNLOCK BTBLCK, GO OKSKED
RETBAD(DSKX06) ;INDICATE INVALID DISK ADDRESS
SUBTTL DEDSKC - Deassign disk address
;DEDSKC - DEASSIGN DISK ADDRESS
;ACCEPTS:
; 1/LINEAR DISK ADDRESS (SECTOR NUMBER)
; 2/ SPTH VALUE FOR THE OFN
; 3/STRUCTURE NUMBER
; CALL DEDSKC
;RETURNS +1: ALWAYS
;THIS ROUTINE DEASSIGNS A DISK ADDRESS ONLY IF IT IS NOT BAD. IT CHECKS
;THE BAT BLOCKS TO SEE IF THE PAGE IS BAD.
DEDSKC::STKVAR<STRNO>
EA.ENT
MOVEM T3,STRNO ;SAVE STRUCTURE NUMBER
TXNE T2,OFNBAT ;DOES THIS OFN DESCRIBE A BAD PAGE?
JRST [ CALL CHKBAD ;YES. GO SEE IF THIS PAGE IS BAD
RET ;PAGE IS MARKED IN BAT BLOCKS. DON'T DEASSIGN
JRST .+1]
;THIS PAGE IS GOOD. RELEASE IT. T1 CONTAINS THE SECTOR NUMBER
MOVE T2,STRNO ;RESTORE STRUCTURE NUMBER
; AND FALL INTO DEDSK
SUBTTL DEDSK - Deassign a specific address, ignoring BAT blocks
;DEDSK - DEASSIGN A SPECIFIC ADDRESS, IGNORING BAT BLOCKS
;ACCEPTS:
; T1/SECTOR NUMBER RELATIVE TO START OF STRUCTURE
; T2/STRUCTURE NUMBER
; CALL DEDSK
;RETURNS +1:ALWAYS
;DEDSKM for deassigning mulitple pages.
; T3/ count of pages to deassign. All must be on same track
;CALLED BY MONITOR ROUTINES (NOT DSKAS JSYS)
;BUGCHKS IF PAGE WAS NOT ASSIGNED
DEDSK:: MOVEI T3,1 ;Release one page
DEDSKM::ASUBR<DEDADR,DEDSTN,DEPCNT>
EA.ENT
CALL DSKDEA ;DO IT
JRST [ CAIE T1,DSKX07 ;FAILED. WAS PAGE NOT ASSIGNED?
JRST .+1 ;NO. SOMETHING ELSE. DON'T BUGCHK
MOVE T1,DEDSTN ;YES. GET STRUCTURE NUMBER
HRRZ T1,STRTAB(T1) ;POINT TO ITS SDB
LOAD T1,STRUC,(T1) ;GET ITS UNIQUE CODE
MOVE T2,DEDADR ;GET REQUESTED DISK ADDRESS
BUG.(CHK,DEAUNA,DSKALC,SOFT,<DEDSK - Deassigning unassigned disk address>,<<T1,STRCOD>,<T2,SECTOR>>,<
Cause: The disk address being deassigned was never assigned.
Data: STRCOD - Structure Unique Code
SECTOR - Sector Number on Disk Relative to Start of Structure
>,,<DB%NND>) ;[7.1246]
JRST .+1]
RET ;RETURN +1 REGARDLESS OF RESULT
SUBTTL DSKDEA - Deassign a specific address, ignoring bad blocks
;DSKDEA - DEASSIGN A SPECIFID ADDRESS, IGNORING BAD BLOCKS
;ACCEPTS:
; T1/ SECTOR NUMBER RELATIVE TO START OF STRUCTURE
; T2/ STRUCTURE NUMBER (STRTAB INDEX)
; T3/ COUNT OF PAGES ON TRACK TO DEASSIGN
;RETURNS +1: BAD ADDRESS OR IT WASN'T ASSIGNED OR BIT TABLE IS BAD
; T1/ERROR CODE
; +2: SUCCESS
;CALLED FROM DSKAS JSYS AS WELL AS FROM ABOVE - BUGCHKS ONLY ON ILLEGAL ADDRESS
DSKDEA: STKVAR<STRN02,DSKADR,DSKCNT>
MOVEM T1,DSKADR ;SAVE SECTOR NUMBER
MOVEM T2,STRN02 ;SAVE STRUCTURE NUMBER
MOVEM T3,DSKCNT
MOVE T3,STRTAB(T2) ;POINT TO START OF SDB FOR THIS STRUCTURE
MOVX T4,MS%ASG ;IF DEASSIGNMENTS ARE PROHIBITED BECAUSE BIT
TDNE T4,SDBSTS(T3) ; TABLE IS BAD OR DOESN'T EXIST,
RETBAD(DSKX05) ;TAKE THE FAILURE RETURN
MOVE T1,T2 ;T1/STRUCTURE NUMBER
CALL MAPBTB ;MAP INDEX BLOCK INTO BTBBAS, LOCK INTO CORE,
; LOCK BTBLCK, GO NOSKED
MOVE T1,DSKADR ;RESTORE SECTOR NUMBER
MOVE T2,STRN02 ;RESTORE STRUCTURE NUMBER
CALL DSKGX ;[7.1112](T1,T2,T3,T4/)COMPUTE LOCATION IN
;BIT TABLE
JRST DSKDE2 ;BAD ADDRESS
SUB T4,DSKCNT ;Make sure the args are correct
AOSGE T4 ;Are they?
BUG.(HLT,DSKBRP,DSKALC,SOFT,<DSKDEA - Pages on multiple cylinders>,<>,<
Cause: DSKDEA has been called to delete a number of pages, and the pages
are on multiple cylinders. This is not allowed.
>)
MOVE T4,STRN01 ;GET STRUCTURE NUMBER
MOVE T4,STRTAB(T4) ;POINT TO START OF SDB FOR THIS STRUCTURE
ADD T1,SDBBT0(T4) ;OFFSET IN BIT TABLE FOR BIT WORD
ADD T1,BTBORA ;ADDRESS OF BIT WORD
MOVE T4,DSKCNT ;Get the count
DO. ;Do them all
TDNE 3,0(T1) ;PAGE ASSIGNED?
JRST DSKDE1 ;NO, RETURN BAD
IORM 3,0(T1) ;YES. UNASSIGN IT
SOJLE T4,ENDLP. ;If no more, done
ROT T3,-1 ;Slide the bit over
JUMPG T3,TOP. ;Keep going it in same word
AOJA T1,TOP. ;next word
ENDDO.
;...
ADD T2,BTBORA ;POINT TO WORD IN BIT TABLE FOR THIS TRACK
MOVE T1,DSKCNT ;Get the count again
ADDM T1,0(T2) ;Increase the track count
MOVE T4,STRN01 ;GET STRUCTURE NUMBER
MOVE T4,STRTAB(T4) ;POINT TO START OF SDB FOR THIS STRUCTURE
ADDB T1,SDBFRC(T4) ;INCREMENT FREE COUNT FOR THIS STRUCTURE
MOVE T2,SDBOMF(T4) ;GET ORIGINAL MINIMUM FREE PAGE VALUE
CAMLE T1,SDBMXF(T4) ;HAS THE FREE COUNT GONE ABOVE MINIMUM
MOVEM T2,SDBMFP(T4) ;YES, SET THE MINIMUM VALUE UP AGAIN
MOVE T1,STRN02 ;T1/STRUCTURE NUMBER
CALL UMPBTB ;UNMAP INDEX BLOCK FROM BTBBAS, UNLOCK CORE PAGE,
; UNLOCK BTBLCK, GO OKSKED
RETSKP ;TAKE SUCCESSFUL RETURN
;PAGE WAS NOT ASSIGNED
DSKDE1: MOVE T1,STRN02 ;T1/STRUCTURE NUMBER
CALL UMPBTB ;UNMAP INDEX BLOCK FROM BTBBAS, UNLOCK CORE PAGE,
; UNLOCK BTBLCK, GO OKSKED
RETBAD(DSKX07) ;INDICATE PAGE NOT ASSIGNED
;ILLEGAL ADDRESS WAS SPECIFIED. GIVE BUGCHK AND TAKE FAILURE RETURN
DSKDE2: MOVE T1,STRN02 ;T1/STRUCTURE NUMBER
HRRZ T3,STRTAB(T1) ;POINT TO ITS SDB
LOAD T3,STRUC,(T3) ;GET ITS UNIQUE CODE
MOVE T2,DSKADR ;GET THE REQUESTED ADDRESS
BUG.(CHK,DEABAD,DSKALC,SOFT,<DSKDEA - Deassigning bad disk address>,<<T3,STRCOD>,<T2,SECTOR>>,<
Cause: The sector being deassigned was not within the legal
range of sector numbers.
Data: STRCOD - Structure Unique Code
SECTOR - Sector Number on Disk Relative to Start of Structure
>)
CALL UMPBTB ;UNMAP THE BIT TABLE
RETBAD(DSKX06) ;INDICATE INVALID DISK ADDRESS
SUBTTL CHKBAD - Check if address is in BAT blocks
;CHKBAD - CHECK IF ADDRESS IS IN BAT BLOCKS
;ACCEPTS:
; T1/SECTOR NUMBER RELATIVE TO START OF STRUCTURE
; T3/STRUCTURE NUMBER
;CALL CHKBAD
;RETURNS +1: ADDRESS IS MARKED IN BAT BLOCKS
; +2: ADDRESS IS NOT MARKED IN BAT BLOCKS
; T1/SECTOR NUMBER
;USES FPG3A AS A WORK PAGE. LOCKS AND READS THE BAT BLOCK FOR THE
;APPROPRIATE DRIVE, AND LOOKS FOR THE GIVEN ADDRESS IN THE BAT BLOCKS
CHKBAD:SAVEP
MOVE P1,A ;SAVE ADDRESS
MOVE P5,C ;MOVE STRUCTURE NUMBER TO PERMANENT PLACE
TXZ A,DSKAB ;TURN OFF TYPE BIT
HRRZ B,STRTAB(P5) ;GET SDB FOR THIS STRUCTURE
IDIV A,SDBSIZ(B) ;COMPUTE UNIT AND ADDRESS
MOVE P2,A ;SAVE LOGICAL UNIT
MOVE P3,B ;SAVE LOCAL ADDRESS
HRRZ P4,STRTAB(P5) ;GET POINTER TO PS
MOVEI P4,SDBUDB(P4) ;GET FIRST SDBUDB INDEX
ADDI P4,0(A) ;POINTER TO THIS SDBUDB
HRRZ A,0(P4) ;GET UDB INDEX
CALL LKBAT ;LOCK THIS BAT BLOCK
JRST [ MOVE A,P1 ;NO. MUST BE GOOD THEN
RETSKP] ;SO GO DELETE IT
NOINT ;PREVENT LOCAL INTERRUPTS
MOVEI A,FPG3A ;GET A PAGE
CALL MLKMA ;LOCK IT DOWN
MOVE P2,A ;SAVE CORE PAGE NUMBER
LSH A,PGSFT ;MAKE IT A CORE ADDRESS
PUSH P,A ;SAVE VIRTUAL ADDRESS
CALL FNDCHN ;GET CKU VALUE (ARGUMENT IN P4)
POP P,B ;PHYSICAL PAGE
MOVEI C,FPG3A ;VIRTUAL ADDRESS
CALL GETBAT ;GET THE BAT BLOCKS
HRRZ C,0(P4) ;UDB POINTER
MOVEI B,FPG3A ;VIRTUAL PAGE
CALL VERBAT ;MAKE SURE THEY ARE GOOD
JRST ISGOOD ;NONE THERE. ASSUME PAGE IS GOOD
;...
MOVE A,P3 ;ADDRESS
MOVEI B,FPG3A ;BAT BLOCK
MOVE C,P5 ;GET THE STRUCTURE NUMBER
HRRZ C,STRTAB(P5) ;GET POINTER TO STRUCTURE TABLE
MOVE C,SDBUDB(C) ;GET A UDB POINTER
CALL SEEADR ;SEE IF IN THERE
JRST ISGOOD
MOVE A,P2 ;CORE ADDRESS
CALL MULKCR ;RELEASE IT
OKINT ;ALLOW INTS AGAIN
HRRZ A,0(P4) ;UDB INDEX
CALL ULKBAT ;FREE THE BAT BLOCK
RETBAD ;LEAVE PAGE ASSIGNED
ISGOOD: MOVE A,P2 ;CORE PAGE
CALL MULKCR ;FREE IT
OKINT ;ALLOW INTS AGAIN
HRRZ A,0(P4) ;UDB INDEX
CALL ULKBAT ;FREE THE BAT BLOCK
MOVE A,P1
RETSKP ;GO RELEASE THEPAGE
SUBTTL RDBAT - Read in BAT blocks for unit
;RDBAT - Read in BAT blocks for unit
;SPECIAL ROUTINE CALLED FROM PAGEM TO READ IN BAT BLOCKS FOR
;A GIVEN UNIT. ACCEPTS:
; 1/ UNIT
; 2/ CORE ADDRESS
; 3/ MEMORY ADDRESS
; 4/ STRUCTURE NUMBER
;RETURNS:
; +1/ NO BAT BLOCKS
; +2/ BAT BLOCKS READ IN BUT NOT LOCKED
RDBAT:: STKVAR <SAVUNT,SAVCOR,SAVMEM,SAVUDB>
EA.ENT
MOVEM A,SAVUNT
MOVEM B,SAVCOR
MOVEM C,SAVMEM
HRRZ A,STRTAB(D) ;PS
HRRI A,SDBUDB(A) ;THE UDB
ADD A,SAVUNT ;ADD IN UNIT
HRRZ A,0(A) ;GET UDB ADDRESS
MOVEM A,SAVUDB ;SAVE IT
CALL LKBAT ;LOCK IT
RET ;FAILED
MOVE C,SAVUDB ;GET UDB
CALL FNDCH1 ;GET CKU NUMBERS
MOVE B,SAVCOR
MOVE C,SAVMEM ;ARGS
CALL GETBAT ;GET BAT BLOCKS
MOVE C,SAVUDB ;GET UDB
MOVE B,SAVMEM ;THE MEMORY ADDRESS
CALL VERBAT ;VERIFY EM
SKIPA
AOS (P)
MOVE A,SAVUDB ;GET UDB
CALL ULKBAT ;FREE BAT LOCKS
RET ;DONE
SUBTTL SEEADR - Search for address in BAT block
;SEEADR - Search for address in BAT block
;
;ROUTINE TO SEE IF LOCAL DISK ADDRESS IN A IS CONTAINED IN
;BAT BLOCK POINTED TO BY B
;ACCEPTS: 1/LOCAL DISK ADDRESS
; 2/BAT BLOCK VIRTUAL ADDRESS
; 3/UDB ADDRESS OF ONE DISK ON THIS STRUCTURE
;RETURNS:
; +1/ NOT IN BLOCK
; +2/ IN BLOCK , B= WORD ADDRESS OF PAIR A= REAL DISK ADDRESS
; (DISK ADDRESS UPDATED TO INCLUDE LOST SECTORS PER CYLINDER
SEEADR::SAVEP
EA.ENT
MOVE P2,B ;SAVE CORE ADDRESS
TLZ C,-1 ;CLEAR JUNK IN LEFT HALF
MOVE C,UDBSIZ(C) ;GET POINTER TO DSKSIZ ENTRY
MOVE P4,SECPAG(C) ;REMEMBER SECTORS PER PAGE
PUSH P,A ;SAVE DISK ADDRESS
IDIV A,SECCYL(C) ;FIND NUMBER OF CYL'S
IMUL A,LPPCYL(C) ;FIND NUMBER OF LOST SECTORS
ADDB A,0(P) ;UPDATE LOCAL DISK ADDRESS
MOVE P1,A ;SET CORRECT DISK SIZE
MOVEI A,0(P2) ;POINTER TO BAT BLOCK
CALL BATSPC ;GET SPACE REMAINING
CAIN A,-MAXBFR ;ANY THERE?
JRST [ POP P,A ;NO. NOT IN BLOCK THEN
RET]
ADDI A,MAXBFR ;DO SUBTRACT
MOVNI A,0(A) ;GET NEGATIVE OF DIFFERENCE
ASH A,-1 ;DIVIDE BY TWO
HRLI B,0(A) ;GET NEG NUMBER OF PAIRS
HRRI B,BAT1P(P2) ;FIRST BAD PAIR
DOABAD: LOAD C,BADT,(B) ;GET TYPE OF THIS BAD PAIR
SKIPE C ;OLD OR NEW
JRST [ LOAD C,ADD27,(B) ;NEW GET LONG ADDRESS
JRST DOABA1]
LOAD C,ADD18,(B) ;OLD, GET SHORT ADDRESS
DOABA1: LOAD D,BATNB,(B) ;GET NUMBER IN THIS REGION
ADD D,C ;GET LAST ONE
TRZ C,-1(P4) ;TRUNCATE TO PAGE BOUNDARY
CAML P1,C ;WITHIN THE RANGE?
CAMLE P1,D ;" ?
SKIPA ;NO
JRST [ POP P,T1
RETSKP]
AOS B ;TWO WORDS PER PAIR
AOBJN B,DOABAD ;DO ALL REGIONS
CALLRET PA1 ;NOT THERE
SUBTTL BATSPC - Count space in BAT block
;BATSPC - Count space in BAT block
;
;ROUTINE TO CALCULATE SPACE LEFT IN BAT BLOCK. ACCEPTS:
; A/ ADDRESS OF BAT BLOCK
;RETURNS: +1 WITH A/SPACE LEFT
RESCD(INIT) ;MUST BE RESIDENT
BATSPC: LOAD B,BTHCT,(A) ;GET ENTRIES USED BY MAPPER
LOAD C,BTMCT,(A) ;PAIRS ADDED BY MONITOR
ADDI B,0(C) ;TOTAL PAIRS USED
LSH B,1 ;2 WORDS PER PAIR
MOVEI A,-MAXBFR(B) ;GET NEG OF SPACE
TRNN A,1B18 ;OVERFLOW?
SETZ A, ;YES. SAY NO ROOM LEFT
RET ;AND DONE
SUBTTL LKBAT - Lock/unlock bat blocks
;LKBAT - Lock/Unlock BAT Blocks
;
;THESE ROUTINES LOCK AND UNLOCK BAT BLOCKS.
;ACCEPTS: 1/UDB POINTER
;RETURNS: +1/ UNIT HAS NO BAT BLOCKS
; +2/BAT BLOCKS LOCKED
SWAPCD ;IS SWAPPABLE
LKBAT:: MOVX B,US.BAT ;FIRST SEE IF IT HAS BAT BLOCKS
EA.ENT
TDNE B,UDBSTS(A) ;DOES IT?
RET ;NO
MOVX B,US.BLK ;GET THE BIT
NOSKED ;PROTECT IT
TDNE B,UDBSTS(A) ;IS IT ALREADY LOCKED?
IFNSK.
MOVSS A ;YES. SET UP FOR TEST
HRRI A,BATTST
RDISMS ;WAIT FOR IT
HLRZS A
ELSE.
IORM B,UDBSTS(A) ;NO. LOCK IT THEN AND STAY NOSKED
ENDIF.
; IFN CFSCOD,<
SKIPGE A,UDBSTR(A) ;GET STR IT IS MOUNTED WITH
IFSKP.
HRRZS A ;ONLY GET STRTAB INDEX
CALL CFGBBS
ENDIF.
; > ;IFN CFSCOD
RETSKP ;RETURN WITH IT LOCKED
SUBTTL BATTST - Scheduler test for bat block available
;BATTST - Scheduler test for BAT block available
RESCD
BATTST: MOVX B,US.BLK ;THE BIT
TDNE B,UDBSTS(A) ;FREE NOW?
JRST 0(4) ;NO. BLOCK AGAIN
NOSKED ;BE NOSKED WHILE WE HAVE LOCK
IORM B,UDBSTS(A) ;YES. LOCK IT
JRST 1(4) ;AND WAKE UP
SWAPCD
SUBTTL ULKBAT - Unlock a bat block
;ULKBAT - Unlock a BAT block
;ACCEPTS 1/UDB POINTER
ULKBAT::MOVX B,US.BLK ;THE BIT
EA.ENT
ANDCAM B,UDBSTS(A) ;CLEAR LOCK
OKSKED ;BECOME OKSKED AGAIN AFTER LOCK RELEASE
; IFN CFSCOD,<
SKIPGE A,UDBSTR(A) ;IS IT A MOUNTED PACK?
IFSKP.
HRRZS A ;ONLY USE STRTAB INDEX
CALL CFFBBS ;YES
ENDIF.
; > ;IFN CFSCOD
RET ;DONE
SUBTTL DSKGX - Compute index into bit table
;DSKGX - COMPUTE INDEX INTO BIT TABLE
;ACCEPTS:
; T1/SECTOR NUMBER RELATIVE TO START OF STRUCTURE
; T2/STRUCTURE NUMBER
;RETURNS +1: INVALID ADDRESS
; +2: VALID ADDRESS
; T1/OFFSET IN BIT PART OF BIT TABLE FOR DESIRED TRACK
; T2/TRACK NUMBER
; T3/WORD WITH BIT CORRESPONDING TO THIS PAGE SET
; T4/ bits remaining in this cylinder
;CALLED AFTER A CALL TO MAPBTB, WHICH MAPS THE BIT TABLE FOR THIS STRUCTURE
;AND GOES NOSKED
SWAPCD
DSKGX: MOVE T3,STRTAB(T2) ;POINT TO SDB FOR THIS STRUCTURE
MOVE T4,SDBTYP(T3) ;POINT TO DSKSIZ TABLE FOR THIS DISK TYPE
TLZ T1,DSKMSK ;FLUSH RANDOM BITS
IDIV T1,SECCYL(T4) ;1/CYLINDER, 2/SECTOR WITHIN CYLINDER
CAML T1,SDBCYL(T3) ;WITHIN KNOWN CYLINDERS FOR THIS STRUCTURE?
RET ;NO.
CAML T1,SDBBT0(T3) ;WITHIN TOP HALF OF BIT TABLE?
RET ;NO, RETURN NO-SKIP
CAIGE T1,LOTRK ;NON-NEGATIVE CYLINDER NUMBER?
RET ;NO
MOVE T3,PAGCYL(T4) ;GET PAGES PER CYLINDER
IMUL T3,SECPAG(T4) ;COMPUTE NUMBER SECTORS IN COMPLETE PAGES
CAML T2,T3 ;IS THIS SECTOR WITHIN A FULL PAGE (POSSIBLE
; EXTRA SECTORS AT END OF CYLINDER)?
RET ;NO
PUSH P,T1 ;SAVE TRACK NUMBER
IMUL T1,BTWCYL(T4) ;INDEX TO FIRST WORD OF BITS
IDIV T2,SECPAG(T4) ;CONVERT SECTOR TO PAGE WITHIN CYLINDER
MOVE T4,PAGCYL(T4) ;Get pages per cylinder
SUB T4,T2 ;Compute number remaining
IDIVI T2,^D36 ;GET INDEX TO BIT WORD WITHIN CYLINDER
ADDI T1,0(T2) ;T1/OFFSET OF BIT WORD FOR THIS PAGE
POP P,T2 ;T2/CYLINDER NUMBER
MOVE T3,BITS(T3) ;T3/BIT FOR THIS PAGE
RETSKP
SUBTTL CRTBTB - Create the bit table
;CRTBTB - CREATE THE BIT TABLE
;ACCEPTS:
; T1/STRUCTURE NUMBER
;RETURNS +1: FAILURE (FATAL ERROR FROM CRTBTB)
; +2: SUCCESS
;CALLED WHEN A STRUCTURE IS BEING CREATED OR ITS BIT TABLE
;IS BEING RECREATED. INITIALIZES THE BIT TABLE
;IN CORE, LEAVING THE SDB POINTING TO THE IN-CORE PAGE TABLE
;ASSIGNS SPACE FOR HOME BLOCKS AND SWAPPING SPACE
;EXITS OKSKED WITH BIT TABLE UNLOCKED AND SPT(BTBBAS) CLEARED.
CRTBTB::STKVAR<STRN03,BTBMAP,CRTBER>
EA.ENT
MOVEM T1,STRN03 ;SAVE STRUCTURE NUMBER
NOSKED ;NOSKED WHILE INITING THE BIT TABLE
CALL ASSPTL ;ASSIGN SPT SLOT; INIT TO USHR AND UAAB; PUT
; FORK INDEX IN SPTH; RETURN OFFSET IN AC1
MOVEM T1,BTBMAP ;SAVE SPT SLOT FOR TEMPORARY PAGE TABLE
MOVE T2,STRN03 ;GET STRUCTURE NUMBER
MOVE T2,STRTAB(T2) ;POINT TO START OF SDB FOR THIS STRUCTURE
MOVEM T1,SDBBTB(T2) ;SAVE SPT INDEX FOR PAGE TABLE IN SDB
HLL T1,SHRPTR ;MAKE SHARE POINTER
MOVEM T1,MSECTB+BTSEC ;SET IN SECTION POINTER
CALL MONCLR ;CLEAR PAGER
MOVE T1,BTBMAP ;FIND SPT
CALL SWPIN1 ;GET A CORE PAGE, MAKE SPT POINTED TO BY T1 POINT
; TO THE PAGE, LOCK IT IN CORE
MOVE T1,BTBMAP ;T1/SPT INDEX FOR PAGE TABLE FOR BIT TABLE
CALL LCKBTB ;LOCK THE LOCK AND MAKE BTBBAS POINT TO PAGE TABLE
SETZM CRTBER ;INDICATE NO ERRORS INITIALLY
MOVE T1,STRN03 ;T1/STRUCTURE NUMBER
CALL INIBTB ;SET INITIAL VALUES IN BIT TABLE
SETOM CRTBER ;INDICATE ERROR
MOVE T1,STRN03 ;T1/STRUCTURE NUMBER
CALL UMPBTB ;UNMAP INDEX BLOCK FROM BTBBAS, UNLOCK CORE PAGE,
; UNLOCK BTBLCK, GO OKSKED
SKIPE CRTBER ;DID WE ENCOUNTER ANY ERRORS?
RETBAD ;YES. TAKE FAILURE RETURN
RETSKP ;NO. TAKE SUCCESS RETURN
SUBTTL INIBTB - Initialize bit table
;INIBTB - INITIALIZE BIT TABLE
;ACCEPTS:
; T1/STRUCTURE NUMBER
;RETURNS +1: FATAL ERROR (FAILED TO ASSIGN HOME BLOCK OR SWAPPING SPACE)
; +2: SUCCESS
;THIS ROUTINE INITIALIZES THE BIT TABLE THAT IS CURRENTLY POINTED TO
;BY THE STRUCTURE'S SDB. NORMALLY IT IS CALLED BY CRTBTB, WHICH HAS
;OBTAINED A PAGE IN CORE TO SERVE AS A PAGE TABLE TO AN ADDRESS SPACE.
;IT CAUSES ALL PAGES TO BE AVAILABLE AND THEN ASSIGNS THOSE PAGES THAT
;BELONG TO THE HOME BLOCKS AND SWAPPING SPACE. IT ALSO ASSIGNS PAGES THAT
;ARE POINTED TO BY THE BAT BLOCKS.
;CALLED NOSKED WITH SPT(BTBBAS) SET UP AND BTBLCK LOCKED
INIBTB::SAVEPQ
EA.ENT
STKVAR<STRN04,SVPAIR,SVADR1,SVADR2,STRTPT,LSTPAG,INIER1,INIER2>
SETZM INIER1 ;INDICATE NO FATAL ERRORS YET
SETZM INIER2 ;INDICATE NO BAT BLOCK FAILURES YET
MOVEM T1,STRN04 ;SAVE STRUCTURE NUMBER
MOVE T4,STRTAB(T1) ;POINT TO START OF SDB FOR THIS STRUCTURE
MOVE T1,SDBTYP(T4) ;POINT TO SIZE DATA FOR THIS DISK TYPE
MOVEM T1,STRTPT ;SAVE POINTER
;INITIALIZE TOP HALF OF BIT TABLE (CONTAINS COUNT OF FREE PAGES PER CYLINDER).
;SET EACH WORD TO INDICATE ALL PAGES AVAILABLE.
MOVE T1,PAGCYL(T1) ;GET NUMBER OF PAGES PER CYLINDER
MOVN T2,SDBBT0(T4) ;GET SIZE OF TOP HALF OF BIT TABLE
HRLZS T2 ;T2/(-COUNT,,OFFSET IN TOP HALF)
INIBT2: MOVEI T3,0(T2) ;GET OFFSET
ADD T3,BTBORA ;ADDRESS OF CURRENT WORD
MOVEM T1,0(T3) ;STORE FULL COUNT FOR EACH TRACK
AOBJN T2,INIBT2 ;GO TO NEXT WORD
;...
;INITIALIZE BOTTOM OF BIT TABLE. CONTAINS 1 BIT PER PAGE, WITH EACH NEW
;CYLINDER STARTING A NEW WORD. CURRENTLY EACH CYLINDER HAS 3 WORDS WITH
;THE THIRD ONLY PARTIALLY USED. THIS CODE INITIALIZES THE FIRST 3 TO
;INDICATE ALL PAGES FREE (THEIR CORRESPONDING BITS SET) AND BLTS TO THE
;REST OF THE TABLE
MOVE T2,SDBBT0(T4) ;START AT BEGINNING OF BIT PART OF BIT TABLE
ADD T2,BTBORA ;COMPUTE ADDRESS OF FIRST BIT WORD
INIBT1: SETOM 0(T2) ;INIT ONE TRACK OF BITS
SUBI 1,^D36 ;REDUCE COUNT OF PAGES (1 BIT PER PAGE)
CAILE 1,^D36 ;LAST WORD?
AOJA 2,INIBT1 ;NO. GO INITIALIZE IT
MOVN 1,BITS-1(1) ;LAST WORD PARTIALLY FULL. SET ONLY VALID BITS
MOVEM T1,1(T2) ;STORE LAST WORD FOR FIRST TRACK
MOVE T2,BTBORA ;CONSTRUCT STARTING LOCATIONS FOR BLT
ADD T2,SDBBT0(T4) ;GET SIZE OF TOP HALF OF BIT TABLE
MOVE T3,T2 ;MAKE DESTINATION POINTER
MOVE T1,STRTPT ;POINT TO SIZE DATA FOR THIS DISK TYPE
ADD T3,BTWCYL(T1) ;2ND GROUP OF WORDS
MOVN T1,BTWCYL(T1) ;FIND OFFSET INTO SECOND GROUP
ADD T1,SDBBT1(T4) ;FIND LENGTH OF TRANSFER
CALL XBLTA ;COPY GROUPS OF BIT WORDS TO REST OF TABLE
SETOM BTBLCK ;CLEAR LOCK BECAUSE DSKASA WILL SET IT.
; WE ARE STILL NOSKED
;ASSIGN SPACE FOR THE HOME BLOCKS
MOVE Q1,STRN04 ;GET STRUCTURE NUMBER
MOVE Q1,STRTAB(Q1) ;POINT TO START OF SDB FOR STRUCTURE
MOVE P2,SDBTYP(Q1) ;POINT TO SIZE DATA FOR THIS DISK TYPE
MOVSI Q3,-NHOME ;Q3/(-COUNT,,OFFSET TO HOME TABLE)
SETOM LSTPAG ;INITIALIZE LAST PAGE ASSIGNED
;...
;LOOP OVER SPECIAL SECTORS IN HOME BLOCK TABLE
HOMAS1: MOVE T1,HOME(Q3) ;GET SECTOR NUMBER WITHIN UNIT
IDIV T1,SECPAG(P2) ;CONVERT TO PAGE
CAMN T1,LSTPAG ;SAME AS LAST PAGE ASSIGNED?
JRST HOMAS3 ;YES. DON'T ASSIGN IT AGAIN
;ASSIGN THIS PAGE FOR ALL UNITS
MOVEM T1,LSTPAG ;SAVE LAST PAGE ASSIGNED
MOVN Q2,SDBNUM(Q1) ;NO. GET NUMBER OF UNITS IN STRUCTURE
HRLZS Q2 ;Q2/(-COUNT,,UNIT NUMBER)
HOMAS2: MOVEI T1,0(Q2) ;GET UNIT NUMBER
IMUL T1,SECUNT(P2) ;COMPUTE FIRST SECTOR IN THIS UNIT
ADD T1,HOME(Q3) ;T1/SECTOR TO ASSIGN
MOVE T2,STRN04 ;T2/STRUCTURE NUMBER
CALL DSKASA ;ASSIGN THE PAGE
SETOM INIER1 ;INDICATE A FATAL ERROR
AOBJN Q2,HOMAS2 ;LOOP TO NEXT UNIT IN STRUCTURE
HOMAS3: AOBJN Q3,HOMAS1 ;LOOP TO NEXT SPECIAL SECTOR
;ASSIGN PAGES FOR SWAPPING. SDB INDICATES HOW MANY PAGES
;IF NONE, SWPASN RETURNS NORMALLY
MOVE T1,STRN04 ;T1/ STRUCTURE NUMBER
CALL SWPASN ;ALLOCATE PAGES FOR SWAPPING SPACE
SETOM INIER1 ;INDICATE FATAL ERROR
; ..
; ..
; NOW READ IN ALL OF THE BAT BLOCKS AND MARK EACH RECORDED
;BAT BLOCK IN THE NEW BIT TABLE
; SETZ P2,
MOVEI A,FPG3A ; GET A PAGE TO WORK WITH
CALL MLKMA ;LOCK IT
LSH A,PGSFT ;MAKE IT A CORE ADDRESS
MOVE P1,A ;SAVE IT
MOVE A,STRN04 ;GET STRUCTURE NUMBER
HRRZ A,STRTAB(A) ;GET SDB FOR THIS STRUCTURE
MOVN P4,SDBNUM(A) ;NUMBER OF PACKS
MOVSI P4,0(P4) ;TO THE LEFT HALF
HRRI P4,SDBUDB(A) ;FIRST UDB POINTER
PACKS: HRRZ A,0(P4) ;GET UDB POINTER
CALL LKBAT ;LOCK UP THE BAT BLOCKS
JRST CYCLE ;NONE THERE
CALL FNDCHN ;GET CKU VALUE
MOVE P2,T1 ;SAVE IT
MOVE B,P1 ;PAGE ADDRESS
MOVEI C,FPG3A ;THE VIRTUAL ADDRESS
CALL GETBAT ;GET AND VERIFY BAT BLOCKS
MOVEI B,FPG3A ; CORE ADDRESS
HRRZ C,0(P4) ;UDB ADDRESS
CALL VERBAT ; GO VERIFY THE BATS
JRST [ HRRZ A,0(P4) ;UDB ADDRESS
CALL ULKBAT ;FREE THE BAT BLOCK
JRST CYCLE] ;AND DONE
MOVEI A,FPG3A ;BAT BLOCK ADDRESS
CALL BATSPC ;GET SPACE USED
MOVEI P3,MAXBFR(A) ;SPACE USED
JUMPE P3,CYCLE0 ; NONE HERE IF A ZERO
LSH P3,-1 ;CALCULATE NUMBER OF PAIRS
MOVEI C,BAT1P+FPG3A ;FIRST BAD BLOCK PAIR
DOBAD: LOAD A,BADT,(C) ; GET TYPE OF THIS BLOCK
SKIPN A
JRST [ LOAD A,ADD18,(C) ;GET 18 BIT ADDRESS
JRST GOTADR] ;AND GO IN LINE
LOAD A,ADD27,(C) ;GET 27 BIT ADDRESS
GOTADR: LOAD B,BATNB,(C) ;GET NUMBER OF BAD ONES
ADD B,A ;
MOVEM C,SVPAIR ;SAVE BAD PAIR INDEX
MOVE D,STRN04 ;GET STRUCTURE NUMBER
HRRZ D,STRTAB(D) ;POINT TO START OF SDB FOR THIS STRUCTURE
MOVEI C,0(P4) ;THIS ONE
SUBI C,SDBUDB(D)
IMUL C,SDBSIZ(D)
ADD A,C ; MAKE THIS LINEAR
ADD B,C ; AND THIS TOO
;...
MOVEM B,SVADR1 ;SAVE LAST ADDRESS
TOPASG: MOVEM A,SVADR2 ; SAVE ADDRESS
TRZ A,3
SUB A,SDBFSS(D) ; SUB XDR OF START OF SWAPPING SECTRS
SKIPL A ; IF <0 THEN XDR IS NOT IN SWAPPING AREA
CAML A,SDBNSS(D) ; IF 0 <= A < # SWPPNG SCTRS ==> IN SWPING AREA
JRST [ MOVE B,STRN04 ;[7120] NOT IN SWPNG AREA, B/ STR #
MOVE B,STRTAB(B);[7120] B/ SDB ADDRESS
MOVE B,SDBTYP(B);[7120] B/ DSKSZn TABLE ADDRESS
MOVE B,SECUNT(B);[7120] B/ # SECTORS PER UNIT
MOVE A,SVADR2 ;[7120] GET BAD SECTOR ADDRESS
CAMLE A,B ;[7120] IN MAINTENANCE AREA ?
JRST TPASG1 ;[7120] YES, DON'T ASSIGN (WOULD FAIL ANYWAY)
MOVE B,STRN04 ;[7120] NO, GET STRUCTURE #
CALL DSKASA ; ASSIGN IT
AOS INIER2 ; COUNT NUMBER OF FAILURES FOR BAD PAGES
MOVE D,STRN04 ; GET BACK STRUCTURE NUMBER
HRRZ D,STRTAB(D) ; AND THEN GET START OF SDB FOR STRUCTURE
JRST .+1]
MOVE A,SVADR2 ; GET BACK BAD SECTOR ADDRESS
TPASG1: MOVE B,STRTPT ;[7120] POINT TO SIZE DATA FOR THIS DISK TYPE
ADD A,SECPAG(B) ; MOVE TO NEXT PAGE
CAMG A,SVADR1 ; OVER THE END?
JRST TOPASG ; NO
MOVE C,SVPAIR ; RESTORE BAD PAIR INDEX
ADDI C,2 ; TO NEXT PAIR
SOJG P3,DOBAD
CYCLE0: HRRZ A,0(P4) ;UDB ADDRESS
CALL ULKBAT ;FREE THE BAT BLOCK
CYCLE: AOBJN P4,PACKS ;DO ALL PACKS
MOVE A,P1 ; GET CORE ADDRESS
LSH A,-PGSFT ;MAKE IT A PAGE NUMBER
CALL MULKCR ;UNLOCK IT
MOVE A,STRN04
CALL DSKSP ;GET NEW FREE COUNT
MOVE 1,STRN04 ;GET STRUCTURE NUMBER
MOVE 1,STRTAB(1) ;POINT TO START OF SDB FOR THIS STRUCTURE
MOVEM 2,SDBFRC(1) ;UPDATE COUNT OF FREE PAGES FOR STRUCTURE
SKIPE INIER1 ;WERE THERE ANY FATAL ERRORS?
RETBAD(MSTX28) ;YES. RETURN 'FAILED TO INIT BIT TABLE'
;...
SKIPE T2,INIER2 ;NO. WERE ANY BAD PAGES NOT ASSIGNED?
JRST [ MOVE T1,STRN04 ;YES. GET THE STRUCTURE NUMBER
MOVE T1,STRTAB(T1) ;POINT TO START OF SDB FOR THIS STRUCTURE
LOAD T1,STRUC,(T1) ;GET UNIQUE CODE FOR THIS STRUCTURE
BUG.(CHK,ASGBPG,DSKALC,SOFT,<INIBTB - Failed to assign bad page(s)>,<<T1,STRCOD>,<T2,AMOUNT>>,<
Cause: The bit table is being initialized; home blocks, pages
in the BAT blocks, and swapping space are being assigned.
Address(es) in the BAT blocks were not assigned.
Data: STRCOD - Structure unique code
AMOUNT - Number of addresses not assigned
>,,<DB%NND>) ;[7.1246]
JRST .+1]
RETSKP ; AND DONE
SUBTTL WRTBTB - Write the bit table
;WRTBTB - WRITE THE BIT TABLE
;ACCEPTS:
; T1/STRUCTURE NUMBER
;RETURNS +1: FAILED
; +2: SUCCEEDED
;WHEN THIS IS CALLED, SDBBTB POINTS TO TEMPORARY PAGE TABLE, WHICH
;CONTAINS POINTERS TO THE IN-CORE COPY OF THE BIT TABLE. THIS ROUTINE
;MAPS THE BIT TABLE INTO A FILE, WHICH IT CREATES, AND DESTROYS THE
;IN-CORE COPY. IT MAKES SDBBTB CONTAIN THE OFN FOR THE NEW FILE
WRTBTB::SAVEQ
EA.ENT
STKVAR<STRN05,BTJFN3,BTBFIL,BTBPT>
MOVEM T1,STRN05 ;SAVE THE STRUCTURE NUMBER
;CONSTRUCT A FILE SPEC FOR THE NEW BIT TABLE FILE CONTAINING THE STRUCTURE
;NAME AND GET A JFN
MOVX T2,GJ%FOU!GJ%PHY!GJ%SHT ;NEXT GENERATION,PHYSICAL,SHORT
CALL GETBTB ;BUILD THE FILE SPEC AND GET A JFN
RETBAD ;FAILED
MOVEM T1,BTJFN3 ;SAVE THE JFN
;OPEN THE FILE AND SET THE NO-DUMP BIT IN THE FDB FOR DUMPER WON'T DUMP FILE
MOVX T2,OF%RD!OF%WR!OF%THW ;T2/READ, WRITE, THAWED ACCESS
OPENF ;OPEN THE BIT TABLE FILE
JRST WRTBT2 ;FAILED
MOVEI T2,.AREXM ;EXEMPT FROM MIGRATION
MOVEI T3,.ARSET ;SET IT
ARCF ;DO IT
ERJMP WRTBT5 ;HANDLE ERROR
MOVEI T2,.FBCTL ;OFFSET OF FLAG WORD IN FDB
MOVE T1,BTJFN3 ;T1/JFN IN RH
STOR T2,CF%DSP,T1 ;T1/OFFSET IN FDB IN LH
MOVX T2,FB%NOD!FB%NDL ;[7172]T2/MASK OF BITS TO BE AFFECTED
MOVX T3,FB%NOD!FB%NDL ;[7172]T3/NEW VALUE - SET NO DUMP
;[7172]AND NEVER DELETE
CHFDB ;CHANGE THE FDB TO REFLECT NO DUMP
ERJMP WRTBT5 ;FAILED - GO CLOSE THE FILE
;...
;GET SOME INFORMATION ABOUT THE FILE
MOVE T1,BTJFN3 ;T1/JFN
MOVE T2,[3,,.FBCTL] ;T2/(COUNT,,FIRST WORD)
MOVEI T3,Q1 ;T3/DESTINATION
GTFDB ;GET SOME INFO ON THE FILE
ERJMP WRTBT5 ;FAILED. GO CLOSE THE FILE
TXNE Q1,FB%LNG ;IS IT A LONG FILE?
BUG.(HLT,WRTLNG,DSKALC,SOFT,<WRTBTB - Bit table is a long file>,,<
Cause: The FDB for a file structure bit table has the FB%LNG bit set, which
says the file is a long file.
>)
MOVE T1,Q3 ;T1/ADDRESS OF INDEX BLOCK
TXO T1,THAWB+FILWB ;OPEN THAWED WITH WRITE ACCESS
;..
;GET AN OFN FOR THE FILE TO UPDATE THE SHARE COUNT SO THAT CLOSING
;IT WON'T GET RID OF THE OFN
;..
MOVE T2,STRN05 ;T2/STRUCTURE NUMBER
CALL ASROFN ;ASSIGN OFN
JRST WRTBT3 ;FAILED. THIS SHOULD NOT HAPPEN IF OPENF SUCCEEDED
MOVEM T1,BTBFIL ;SAVE THE OFN FOR THE FILE
MOVE T1,BTJFN3 ;T1/JFN
CLOSF ;CLOSE THE FILE TO GET RID OF THE JFN (OFN REMAINS)
JFCL
;GET THE SPT INDEX FOR THE TEMPORARY PAGE TABLE
MOVE T1,STRN05 ;GET STRUCTURE NUMBER
MOVE T1,STRTAB(T1) ;POINT TO START OF SDB FOR THIS STRUCTURE
MOVE T2,SDBBTB(T1) ;GET SPT INDEX FOR PAGE TABLE
MOVEM T2,BTBPT ;SAVE IT
;COPY THE IN-CORE BIT TABLE TO THE NEW FILE
MOVE Q2,SDBBT0(T1) ;GET SIZE OF TOP HALF OF BIT TABLE
MOVEM Q2,Q3 ;SAVE IT FOR LATER
ADD Q2,SDBBT1(T1) ;ADD SIZE OF BOTTOM HALF
ADDI Q2,<PGSIZ-1> ;ROUND TO END OF PAGE
IDIVI Q2,PGSIZ ;CONVERT TO NUMBER OF PAGES
MOVN Q1,Q2 ;-NUMBER OF PAGES IN BIT TABLE FILE
HRLZS Q1 ;Q1/(-PAGE COUNT,,0)
;...
;LOOP THROUGH ALL PAGES IN THE FILE,MAPPING THE CORE PAGE INTO THE FILE.
;MAP IT BACK BECAUSE THE IN-CORE COPY IS BEING USED WHEN SETPT CALLS DSKASN,
;AND THE CORE-TO-FILE MAP DESTROYS THE CORE CONTENTS.
WRTBT1: NOSKED
HRLZ T1,BTBPT ;T1/(PTN,,PN)
HRR T1,Q1
HRLZ T2,BTBFIL ;T2/(OFN,,PN)
HRR T2,Q1
MOVX T3,PTRW ;T3/READ, WRITE ACCESS
CALL SETPT ;MAP PAGE TO FILE
EXCH T1,T2
CALL SETPT ;MAP FILE TO PAGE
OKSKED
AOBJN Q1,WRTBT1 ;AT END OF TABLE YET?
;ALL PAGES MAPPED. MAKE THE SDB POINT TO THE FILE AND GET RID OF THE
;IN-CORE PAGES, INCLUDING THE PAGE TABLE
MOVE T1,BTBFIL ;YES. GET OFN FOR FILE
MOVE T2,STRN05 ;GET STRUCTURE NUMBER
; IFN CFSCOD,<
CALL CFSSBB ;Notify CFS
; > ;IFN CFSCOD
MOVE T2,STRTAB(T2) ;POINT TO START OF SDB FOR THIS STRUCTURE
MOVEM T1,SDBBTB(T2) ;SAVE THE OFN IN THE SDB
SETZM T1 ;T1/ TO INDICATE CLEAR THE PAGE TABLE
HRLZ T2,BTBPT ;T2/ (OFN,,PN)
MOVE T4,Q2 ;T4/NUMBER OF PAGES
CALL MSETPT ;CLEAR THE TEMPORARY PAGE TABLE
NOP ;NORMAL RETURN IS SKIP
MOVE T1,BTBPT ;T1/SPT ENTRY FOR PAGE TABLE
CALL DESPT ;RELEASE THE SPT SLOT
MOVE T1,STRN05 ;T1/STRUCTURE NUMBER
CALL CPYBAK ;UPDATE BACKUP OF ROOT-DIRECTORY TO SHOW
; THE NEW BIT TABLE FILE
JRST [ MOVE T1,STRN05 ;GET STRUCTURE NUMBER
MOVE T1,STRTAB(T1) ;POINT TO SDB FOR THIS STRUCTURE
LOAD T1,STRUC,(T1) ;GET UNIQUE CODE
BUG.(CHK,WRTCPB,DSKALC,HARD,<WRTBTB - Failed to backup ROOT-DIRECTORY>,<<T1,STRCOD>>,<
Cause: The bit table is being written. The backup root-directory or
symbol table may not have been written, or there may not be
enough free space on the pack.
Data: STRCOD - Structure Unique Code
>,,<DB%NND>) ;[7.1210]
JRST .+1]
;...
MOVE T1,STRN05 ;T1/STRUCTURE NUMBER
MOVEI T2,HOMBTB ;T2/OFFSET IN HOME BLOCK FOR WORD TO CHANGE
MOVE T3,STRN05 ;GET STRUCTURE NUMBER
MOVE T3,STRTAB(T3) ;POINT TO SDB FOR THIS STRUCTURE
MOVE T3,SDBBT0(T3) ;T3/SIZE OF TOP HALF OF BIT TABLE
HRROI T4,-1 ;CHANGE ENTIRE WORD
CALL MODHOM ;REWRITE THE HOME BLOCK TO INDICATE THE
; NEW SIZE OF THE BIT TABLE
RETBAD(MSTRX6) ;INDICATE HOME BLOCKS ARE BAD
HRLZ T1,BTBFIL ;OFN,,0
MOVEI T2,1000
CALL UPDPGS ;UPDATE FILE PAGES
MOVE T1,BTBFIL
CALL UPDOFN ;UPDATE OFN ALSO
RETSKP
;ERROR AFTER GTJFN BUT BEFORE OPENF. RELEASE THE JFN
WRTBT2: MOVEM T1,STRN05 ;SAVE ERROR CODE IN TEMPORARY LOCATION
MOVE T1,BTJFN3 ;T1/JFN OF BIT TABLE FILE
RLJFN ;RELEASE THE JFN
JFCL ;IGNORE FAILURE
MOVE T1,STRN05 ;RESTORE ERROR CODE
RETBAD ;TAKE NON-SKIP RETURN
;ASOFN FAILED WHEN OPENF SUCCEEDED. SOMETHING IS REALLY WRONG...
WRTBT3: MOVE T2,STRN05 ;GET STRUCTURE NUMBER
HRRZ T2,STRTAB(T2) ;POINT TO ITS SDB
LOAD T2,STRUC,(T2) ;GET ITS UNIQUE CODE
BUG.(CHK,WRTBT4,DSKALC,SOFT,<ASOFN on bit table file failed>,<<T2,STRCOD>>,<
Cause: Could not assign an OFN for the structure bit table.
Data: STRCOD - Structure Unique Code
>)
;ERROR OCCURRED AFTER OPENF AND BEFORE CLOSF. CLOSE THE FILE
WRTBT5: MOVEM T1,STRN05 ;SAVE ERROR CODE IN TEMPORARY LOCATION
MOVE T1,BTJFN3 ;T1/JFN FOR BIT TABLE FILE
CLOSF ;CLOSE THE FILE
JFCL ;IGNORE FAILURE
MOVE T1,STRN05 ;RESTORE ERROR CODE
RETBAD ;TAKE NON-SKIP RETURN
SUBTTL MNTBTB - Mount the bit table
;MNTBTB - MOUNT THE BIT TABLE
;ACCEPTS:
; T1/STRUCTURE NUMBER
;RETURNS +1: FAILED TO FIND BIT TABLE
; +2: SUCCEEDED
;CALLED WHEN STRUCTURE IS BEING MOUNTED AND BY JOB 0 FOR ALL STRUCTURES MOUNTED AT
;SYSTEM STARTUP. GETS AN OFN FOR THE BIT TABLE FILE AND STORES IT IN THE SDB
MNTBTB::SAVEQ
EA.ENT
STKVAR<STRN06,BTJFN2>
MOVEM T1,STRN06 ;SAVE STRUCTURE NUMBER
MOVX T2,GJ%OLD!GJ%PHY!GJ%DEL!GJ%SHT ;T2/BITS FOR GTJFN
CALL GETBTB ;GET JFN FOR BIT TABLE FILE
RETBAD ;FAILED
MOVEM T1,BTJFN2 ;SAVE THE JFN
MOVE T2,[3,,.FBCTL] ;T2/(COUNT,,FIRST WORD)
MOVEI T3,Q1 ;T3/DESTINATION
GTFDB ;GET SOME INFO ON THE FILE
ERJMP MNTBT1 ;FAILED. RELEASE THE JFN
TXNE Q1,FB%LNG ;IS IT A LONG FILE?
BUG.(HLT,MNTLNG,DSKALC,SOFT,<MNTBTB - Bit table is a long file>,,<
Cause: While mounting the structure, the monitor discovered that the bit table
for the structure is a long file.
Action: Use CHECKD to rebuild the file structure bit table. If that does not
work, recreate the structure.
>)
MOVE T1,Q3 ;T1/ADDRESS OF INDEX BLOCK
TXO T1,THAWB+FILWB ;THAWED SO IT IS UPDATED INSTANTLY
MOVE T2,STRN06 ;T2/STRUCTURE NUMBER
CALL ASROFN ;GET AN OFN FOR THE FILE
JRST MNTBT1 ;FAILED. GO RELEASE THE JFN
MOVE T2,STRN06 ;GET STRUCTURE NUMBER
; IFN CFSCOD,<
CALL CFSSBB ;Notify CFS
; > ;IFN CFSCOD
MOVE T2,STRTAB(T2) ;POINT TO START OF SDB FOR THIS STRUCTURE
MOVEM T1,SDBBTB(T2) ;SAVE OFN FOR THIS STRUCTURE
MOVE T1,BTJFN2 ;T1/JFN FOR BIT TABLE
RLJFN ;RELEASE THE JFN
JFCL ;IGNORE FAILURE
RETSKP
;...
;ERROR AFTER GTJFN. RELEASE THE JFN
MNTBT1: MOVEM T1,STRN06 ;SAVE ERROR CODE IN TEMPORARY LOCATION
MOVE T1,BTJFN2 ;T1/JFN FOR BIT TABLE FILE
RLJFN ;RELEASE THE JFN
JFCL ;IGNORE FAILURE
MOVE T1,STRN06 ;RESTORE ERROR CODE
RETBAD ;TAKE NON-SKIP RETURN
SUBTTL MAPBTB - Map the bit table
;MAPBTB - MAP THE BIT TABLE
;ACCEPTS:
; T1/STRUCTURE NUMBER
;RETURNS +1: ALWAYS, NOSKED
;FOR A GIVEN STRUCTURE, GETS OFN FOR ITS BIT TABLE FROM ITS SDB, SWAPS ITS
;INDEX BLOCK INTO CORE. CALLS LCKBTB TO LOCK BTBLCK AND MAKE THE SPECIAL
;SPT SLOT, BTBBAS, POINT TO THE INDEX BLOCK
;MPABTF ENTRY:
; Same as MAPBTB, but fails if we had to wait
MAPBTF: TDZA T2,T2 ;ENTRY TYPE
MAPBTB::MOVEI T2,1
STKVAR<BTBMAP,BTBMP0>
MOVEM T2,BTBMP0
EA.ENT
MOVE T1,STRTAB(T1) ;POINT TO START OF SDB FOR THIS STRUCTURE
SKIPN T1,SDBBTB(T1) ;IS THERE AN OFN FOR THE BIT TABLE?
BUG.(HLT,MAPBT1,DSKALC,SOFT,<OFN for bit table is zero>,,<
Cause: There is no OFN for the file structure bit table currently being
mapped.
>)
MOVEM T1,BTBMAP ;YES. SAVE SPT INDEX
MAPBTR: NOSKED ;Exclusive ownership for a bit
; IFN CFSCOD,<
CAIL T1,NOFN ;Is this really an OFN?
JRST MAPBTP ;No. Skip the rest of this
LOAD T2,SPTST,(T1) ;Get state of the bit table file
TMNN SPTFO,(T1) ;being forced?
CAIE T2,.SPSWR ;Here and exclusive?
SKIPA T1,BTBMAP ;Must request it
JRST MAPBT0 ;If so, go to it
MOVEI T2,1 ;NEED WRITE
OKSKED
CALL CFSAWT ;MOVE IT HERE AND RESCHED
SKIPN BTBMP0 ;Want to know about this?
RET ;Yes
MOVE T1,BTBMAP
JRST MAPBTR ;No.
;...
MAPBT0: MOVE T1,BTBMAP ;GET STR
TMNN SPTSFD,(T1) ;Does this need reverifying?
IFSKP. ;If so...
OKSKED ;Undo NOSKED from above
CALL XBCHK ;Do the check
SKIPN BTBMP0 ;Want to know about that?
RET ;yes
MOVE T1,BTBMAP
JRST MAPBTR ;No. So try again now
ENDIF.
MOVEI T2,1 ;WRITE PLEASE
CALL CFSAWP ;GET IT
MOVE T1,BTBMAP
; > ;IFN CFSCOD
MAPBTP: HLL T1,SHRPTR ;SET UP SHARE POINTER TO BTB SECTION
MOVEM T1,MSECTB+BTSEC ;SET UP SECTION POINTER
CALL MONCLR ;RESET PAGER MAP
MOVE T1,BTBMAP ;RECOVER MAP
CALL SWPIN1 ;SWAP IT INTO CORE AND LOCK DOWN THE PAGE
MOVE T1,BTBMAP ;GET SPT INDEX
CALL LCKBTB ;LOCK THE LOCK AND SET BTBBAS TO POINT TO THIS INDEX BLOCK
SKIPE BTBMP0 ;WANT TO KNOW ABOUT RESCHED?
RET
RETSKP ;YES
SUBTTL UMPBTB - Unmap the bit table
;UMPBTB - UNMAP THE BIT TABLE
;ACCPETS:
; T1/STRUCTURE NUMBER
;RETURNS +1: ALWAYS
;CALLED NOSKED, WITH BIT TABLE MAPPED. RETURNS OKSKED WITH BIT TABLE UNMAPPED
;AND BTBLCK UNLOCKED
UMPBTB::STKVAR <UNMBTS>
MOVEM T1,UNMBTS ;SAVE STR NUMBER
EA.ENT
MOVE T1,BTBBAS ;GET OFFSET OF SPECIAL SPT SLOT FOR BIT TABLE
MOVX T3,UAAB ;SET UP FOR SPT SLOT UNUSED
MOVEM T3,SPT(T1) ;INDICATE THIS IN BTBBAS SLOT
CALL UPSHR ;SET SHARE COUNT
SETZM SPTH(T1) ;NO ONE OWNS THIS SLOT FOR NOW
MOVE T2,UNMBTS ;GET STRUCTURE NUMBER
MOVE T2,STRTAB(T2) ;POINT TO START OF SDB FOR THIS STRUCTURE
SETZM MSECTB+BTSEC ;CLEAR SECTION POINTER
MOVE T1,SDBBTB(T2) ;GET OFN CURRENTLY MAPPED
LOAD T1,STGADR,SPT(T1) ;GET CORE ADDRESS THAT INDEX BLOCK IS MAPPED INTO
CALL UNLBTB ;UNLOCK THE CORE PAGE (LOCKED BY MAPBTB)
SETOM BTBLCK ;CLEAR THE BIT TABLE LOCK
; IFN CFSCOD,<
MOVE T1,UNMBTS ;GET STR NUMBER
MOVE T1,STRTAB(T1) ;Get SDB pointer
MOVE T1,SDBBTB(T1) ;Get OFN of bit table
CAIGE T1,NOFN ;Is it really an OFN?
CALL CFSFWT ;YES, RELEASE IT
; > ;IFN CFSCOD
OKSKED
RET
SUBTTL LCKBTB - Lock bit table
;LCKBTB - LOCK BIT TABLE
;CALLED ON ENTRY TO ANY ASSIGNMENT OR DEASSIGNMENT
;ROUTINE
;ACCEPTS:
; T1/OFFSET IN SPT FOR ENTRY TO COPY INTO BTBBAS
;RETURNS +1: ALWAYS
;CALLED NOSKED
;COPIES AN SPT ENTRY INTO THE SPECIAL BIT TABLE SLOT, BTBBAS. STORES THE OFFSET
;INTO SPTH(BTBBAS). THE SPT SLOT MUST POINT TO A PAGE TABLE FOR A BIT TABLE.
;IT MAY BE IN EITHER PART OF THE SPT. THIS ROUTINE ALSO LOCKS THE BIT TABLE
;LOCK.
LCKBTB: AOSE BTBLCK ;TRY TO LOCK SPT SLOT
BUG.(CHK,DSKBT3,DSKALC,SOFT,<DISK Bit table already locked at LCKBTB>,<<T1,SPTIDX>>,<
Cause: A structure bit table being locked is already locked.
Data: SPTIDX - Offset in SPT for entry to copy into BTBBAS SPT and SPTH
slots.
>)
MOVE T2,BTBBAS ;GET SPECIAL SPT INDEX FOR BIT TABLE
MOVE T3,SPT(T1) ;GET CONTENTS OF SPT ENTRY FOR STRUCTURE TO BE MAPPED
MOVEM T3,SPT(T2) ;COPY INTO BTBBAS ENTRY (MMAP POINTS TO BTBBAS)
MOVEM T1,SPTH(T2) ;SHOW SPT SLOT AS OWNER IN BTBBAS
RET
SUBTTL GETBTB - Get a JFN on the bit table file
;GETBTB - GET A JFN ON THE BIT TABLE FILE
;ACCEPTS:
; T1/STRUCTURE NUMBER
; T2/BITS FOR GTJFN AS PASSED IN T1
; CALL GETBTB
;RETURNS +1: FAILED
; +2: SUCCEEDED
; T1/JFN FOR BIT TABLE FILE
GETBTB:
STKVAR <STRN16,NAMBLK,FLAGS,BTJFN0>
MOVEM T1,STRN16 ;SAVE THE STRUCTURE NUMBER
MOVEM T2,FLAGS ;SAVE BITS FOR GTJFN
MOVEI T2,10 ;GET 8 WORDS OF FREE SPACE FROM THE
NOINT ;NOINT WHILE WE HAVE JSB FREE SPACE
CALL ASGJFR ; JSB TO HOLD THE FILE SPEC
RETBAD (,<OKINT>) ;FAILED TO GET THE SPACE
MOVEM T1,NAMBLK ;SAVE LOCATION OF START OF STRING AREA
HRROI T1,1(T1) ;POINT TO WORD AFTER THE HEADER
MOVE T2,STRN16 ;T2/STRUCTURE NUMBER
HRROI T3,BTBNAM ;T3/POINTER TO FILE NAME
CALL STRST ;BUILD A STRING CONTAINING STRUCTURE NAME
; AND FILE SPEC
JRST GETBT1 ;FAILED
MOVE T1,FLAGS ;T1/BITS FOR GTJFN
HRRO T2,NAMBLK ;USE FILE NAME JUST CREATED
ADDI T2,1 ;POINT TO WORD AFTER HEADER
GTJFN ;GET A JFN FOR THE BIT TABLE FILE
JRST GETBT1 ;FAILED
MOVEM T1,BTJFN0 ;SAVE THE JFN
MOVEI T1,JSBFRE ;T1/RETURNING SPACE IN JSB
MOVE T2,NAMBLK ;T2/START OF BLOCK
CALL RELFRE ;RELEASE THE STRING SPACE WE GOT BEFORE
OKINT ;OKINT NOW THAT FREE SPACE RETURNED
MOVE T1,BTJFN0 ;RETURN THE JFN IN T1
RETSKP
;GOT AN ERROR AFTER THE CALL TO ASGJFR AND BEFORE THE CALL TO RELFRE.
;RELEASE THE SPACE AND TAKE ERROR RETURN
GETBT1: MOVEM T1,STRN16 ;SAVE ERROR CODE IN TEMPORARY LOCATION
MOVEI T1,JSBFRE ;T1/RETURNING SPACE IN THE JSB
MOVE T2,NAMBLK ;T2/START OF BLOCK
CALL RELFRE ;RELEASE THE SPACE WE GOT BEFORE
OKINT ;OKINT NOW THAT FREE SPACE RETURNED
MOVE T1,STRN16 ;RESTORE THE ERROR CODE
RETBAD
BTBNAM: ASCIZ /<ROOT-DIRECTORY>DSKBTTBL/
SUBTTL DSKINC - Increment a disk address.
;DSKINC - Increment a disk address.
; T1/ The address
; T2/ structure number
;Returns +1
; Preserves all ACs except T1
DSKINC::SAVEAC<Q1> ;Get a work AC
MOVE Q1,STRTAB(T2) ;SDB address
MOVE Q1,SDBTYP(Q1) ;Get type table
ADD T1,SECPAG(Q1) ;increment the address
RET ;And done
SUBTTL .DSKAS - Disk assignment control jsys
;.DSKAS - DISK ASSIGNMENT CONTROL JSYS
;ACCEPTS:
;T1/ DATA PLUS BITS (SEE BELOW)
;T2/ DEVICE DESIGNATOR
;NO BITS: DATA IS SECTOR NUMBER FROM BEGINNING OF STRUCTURE. ASSIGN THIS PAGE
;B0 (DA%DEA): DATA IS SECTOR NUMBER FROM BEGINNING OF STRUCTURE. DEASSIGN THIS PAGE
;B1 (DA%ASF): DATA IS SECTOR NUMBER FROM BEGINNING OF STRUCTURE. ASSIGN NEAR THIS SECTOR
;B2 (DA%CNV): CONVERT THE ADDRESS IN THE REST OF THE WORD
;B3 (DA%HWA): ADDRESS IS HARDWARE. CONVERT TO SOFTWARE
;IF B3 IS NOT SET, DATA IS SOFTWARE ADDRESS. CONVERT TO HARDWARE
;B4 (DA%INI): NO DATA. INITIALIZE THE BIT TABLE FOR STRUCTURE IN T2
;B5 (DA%WRT): NO DATA. WRITE THE BIT TABLE FILE FOR THE STRUCTURE IN T2
; 1B0+1B1+SIXBIT / CLEAR/ = CLEAR WHOLE BIT TABLE (NO LONGER SUPPORTED)
;RETURNS +1: FAILED
; +2: SUCCEEDED
.DSKAS::MCENT
CALL DSKASO ;CALL ROUTINE TO DO THE WORK
RETERR ;FAILED. NON-SKIP RETURN
SMRETN ;SUCCEEDED. SKIP RETURN
DSKASO: TRVAR <STRN07,BTJFN1>
TXNE A,DA%CNV ;CONVERSION WANTED?
JRST DSKUA2 ;YES
MOVE 4,CAPENB ;NO. EVERYTHING ELSE REQUIRES WHEEL OR OPERATOR
TXNN 4,SC%WHL+SC%OPR
RETBAD(WHELX1) ;CALLER DOESN'T HAVE ENOUGH PRIVILEGES
UMOVE T1,2 ;GET DEVICE DESIGNATOR
CALL CHKSTR
RETBAD (DSKX01) ;NO SUCH STR
MOVEM T1,STRN07 ;SAVE STR NUMBER
UMOVE T1,1 ;RESTORE USER FLAGS
MOVE T2,STRN07 ;SET THIS UP
TXNE T1,DA%INI!DA%WRT!DA%AIN ;WORKING ON THE BIT TABLE?
JRST [ MOVEI T4,DSKUA4 ;YES
JRST DSKUAD]
TXZE 1,DA%DEA ;NO.DEASSIGN?
JRST [ MOVEI T4,DSKUA1 ;YES - GO DO IT
JRST DSKUAD]
;SOME SORT OF ASSIGNMENT TO BE DONE
MOVEI T4,DSKUAA ;DO SPECIFIC ASSIGNMENT
TXZE 1,DA%ASF ;UNLESS BIT 1,
MOVEI T4,DSKUAN ;IN WHICH CASE ASSIGN AS CLOSE AS POSSIBLE
; ..
; ..
DSKUAD: CALL 0(T4) ;DO WHICHEVER
JRST [ EXCH T1,STRN07 ;SAVE ERROR CODE - GET STR #
CALL ULKSTR ;UNLOCK STR
MOVE T1,STRN07 ;GET ERROR CODE BACK
RET] ;FAIL RETURN
MOVE T1,STRN07 ;UPDATE BIT TABLE
CALL UPDBTB ;...
MOVE T1,STRN07 ;RELEASE STRUCTURE LOCK
CALL ULKSTR ;...
RETSKP ;GIVE GOOD RETURN
;HERE IF DA%DEA IS SET. IF DA%ASF IS SET TOO, THIS IS THE BIT TABLE
;CLEAR FUNCTION. OTHERWISE, IT IS THE DEASSIGN FUNCTION
DSKUA1: TXZN 1,DA%ASF ;BIT 1 ALSO?
JRST [ MOVEI T3,1 ;One page only
CALL DSKDEA ;NO, DEASSIGN SPECIFIC ADDRESS
RETBAD ;FAILED
RETSKP]
;USER HAS REQUESTED THE BIT TABLE CLEAR FUNCTION. THIS HAS BEEN
;REPLACED BY THE INI/WRT COMBINATION
RETBAD (ARGX02) ;RETURN 'INVALID FUNCTION'
REPEAT 0,<
CAME 1,[SIXBIT / CLEAR/] ;SEE IF 'PASSWORD' OK
RETBAD ;LOSE - HE DIDN'T 'REALLY' WANT TO...
MOVE T1,STRN07 ;T1/STRUCTURE NUMBER
CALL MAPBTB ;MAP INDEX BLOCK INTO BTBBAS, LOCK INTO CORE,
; LOCK BTBLCK, GO NOSKED
MOVE T1,STRN07 ;T1/STRUCTURE NUMBER
CALL INIBTB ;INITIALIZE THE BIT TABLE
MOVE T1,STRN07 ;T1/STRUCTURE NUMBER
CALL UMPBTB ;UNMAP INDEX BLOCK FROM BTBBAS, UNLOCK CORE PAGE,
; UNLOCK BTBLCK, GO OKSKED
RETSKP
>
;USER WANTS ADDRESS CONVERSION
DSKUA2: MOVE D,CAPENB ;CHECK CAPABILITIES
TXNN D,SC%WHL+SC%OPR+SC%MNT
RETBAD(WHELX1) ;INSUFFICIENT
TXZN A,DA%HWA ;HARDWARE OR SOFTWARE ADDRESS?
JRST [ ANDX A,STGADR ;SOFTWARE, GET ONLY VALID BITS
JRST DSKUA3]
DSKUA3: UMOVEM A,A
RETSKP
;USER WANTS TO MODIFY THE BIT TABLE. DO SOME COMMON THINGS BEFORE DECIDING
;WHICH FUNCTION TO DO
DSKUA4: MOVE T3,STRTAB(T2) ;GET SDB PNTR FOR STRUCTURE
ADDI T2,DVXST0 ;POINT TO DEVXXX TABLES FOR THIS STRUCTURE
MOVX T4,D1%INI ;SET UP BIT FOR STRUCTURE BEING INITED
NOSKED ;DON'T LET ANYONE STOP US WHILE WE'RE MESSING
; WITH THE BIT TABLE
TXNE T1,DA%WRT!DA%AIN ;NOW, WHAT WERE WE DOING?
JRST DSKUA5 ;WRITING(OR ABORTING) THE FILE. GO DO IT
;USER WANTS TO INITIALIZE THE BIT TABLE. CREATE AN IN-CORE COPY AND
;GIVE THIS FORK EXCLUSIVE ACCESS UNTIL THE WRITE FUNCTION IS DONE.
TDNE T4,DEVCH1(T2) ;IS BIT ALREADY ON?
JRST DSKU40 ;YES - DON'T CHANGE JOB #
IORM T4,DEVCH1(T2) ;SAY THAT WE ARE DOING IT
HRRZS DEVUNT(T2) ;MAKE STRUCTURE APPEAR TO BE ASSIGNED TO JOB 0
;SO EXEC WON'T SAY IT IS AVAILABLE
MOVE T4,FORKX ;GET THIS FORK'S NUMBER
STOR T4,STRJB,(T3) ;SAVE IT AS THE INITING FORK
DSKU40: SETZRO MS%ASG,SDBSTS(T3) ;ALLOW ASSIGNMENTS AGAIN SINCE WE ARE
; CREATING A NEW BIT TABLE
SETZM SDBLCA(T3) ;RESET LAST CYLINDER ASSIGNED FOR THIS
;STRUCTURE (USED BY DSKASN)
SKIPE T1,SDBBTB(T3) ;GET CURRENT OFN FOR BIT TABLE
JRST [ CAIL T1,NOFN ;IS IT A REAL OFN FOR A FILE?
JRST DSKUA6 ;NO. BIT TABLE WAS JUST CREATED
CALL RELOFN ;YES. RELEASE IT
JRST .+1]
MOVE T1,STRN07 ;T1/STRUCTURE NUMBER
CALL CRTBTB ;GO INITIALIZE THE IN-CORE COPY OF THE
; BIT TABLE
RETBAD (,<OKSKED>) ;FAILED
DSKUA6: OKSKED ;ALLOW SCHEDULING
RETSKP
;NOTE ON THE CALL TO RELOFN:
;IT IS POSSIBLE TO DO THE CREATE FUNCTION TWICE IN A ROW, THUS ENTERING THIS
;CODE WHEN A PRIVATE COPY OF THE BIT TABLE EXISTS. ONLY THE JOB THAT SET
;THE D1%INI BIT IN DEVCH1 (AND THUS HAS EXCLUSIVE ACCESS) CAN DO THIS
;FUNCTION AS WELL AS THE 'WRITE' FUNCTION. IF A PRIVATE COPY EXISTS, SDBBTB
;FOR THE STRUCTURE WILL CONTAIN A NUMBER LARGER THAN NOFN. IN THAT CASE,
;RELOFN AND CRTBTB ARE NOT CALLED. THIS IS BECAUSE (1) RELOFN WILL FAIL AND
;(2) CRTBTB WOULD CREATE A SECOND PRIVATE PAGE TABLE, LOSING TRACK OF THE
;EXISTING PAGE TABLE.
;USER WANTS TO WRITE THE BIT TABLE FILE. IF AN IN-CORE COPY EXISTS, SDBBTB
;CONTAINS A NUMBER >= NOFN. IF NOT, THIS CODE RETURNS AN ERROR
DSKUA5: TDNN T4,DEVCH1(T2) ;IS THE BIT TABLE BEING INITED?
RETBAD(DSKX03,<OKSKED>) ;NO. IT SHOULD BE
MOVE T1,SDBBTB(T3) ;GET CURRENT OFN FOR BIT TABLE
SKIPE T1
CAIGE T1,NOFN ;REAL FILE OFN?
RETBAD(DSKX03,<OKSKED>) ;DON'T HAVE SPT INDEX FOR BITTABLE
;GET A JFN ON THE FILE AND GET RID OF IT IN THE DIRECTORY
UMOVE T2,T1 ;get user's flags back
TXNE T2,DA%AIN ;aborting initialization?
JRST [ HRLZ T2,T1 ;yes, T2/ (OFN,,PN)
MOVE T1,STRN07 ;get stucture number back.
MOVE T1,STRTAB(T1) ;get address of SDB
MOVE Q1,T1 ;save address for later use
MOVE T3,SDBBT0(T1) ;get size of top half of BIT table
ADD T3,SDBBT1(T1) ;add size of bottom half
ADDI T3,<PGSIZ-1> ;round to end of page
IDIVI T3,PGSIZ ;convert to number of pages
MOVE T4,T3 ;T4/number of pages
MOVX T3,PM%RD+PM%WR ;make page available
SETZM T1 ;T1/ to indicate clear the page table
CALL MSETPT ;CLEAR THE TEMPORARY PAGE TABLE
NOP ;don't care
MOVE T1,SDBBTB(Q1) ;OFN of bit table
CALL DESPT ;RELEASE THE SPT SLOT
SETZM SDBBTB(Q1) ;clear OFN of BTB
MOVE T1,STRN07 ;structure number
CALL MNTBTB ;mount bittable
JFCL ;don't care about errors
JRST DSKUA7] ;don't write data onto the disk
;...
MOVE T1,STRN07 ;T1/STRUCTURE NUMBER
MOVX T2,GJ%OLD!GJ%PHY!GJ%DEL!GJ%SHT
CALL GETBTB ;GET A JFN FOR THE FILE
JRST [CAIE T1,GJFX24 ;IS ERROR "FILE NOT FOUND"?
RETSKP ;NO. IGNORE THE FAILURE.
JRST DSKU10] ;YES. THEN GO MAKE A NEW ONE
MOVEM T1,BTJFN1 ;SAVE JFN
HRLI T1,.FBCTL ;[7172]OFFSET OF WORD TO CHANGE
MOVX T2,FB%NDL ;[7172]BIT MASK TO MODIFY
SETZ T3, ;[7172]TURN OFF 'NEVER DELETE' BIT
CHFDB% ;[7172]WE CAN DELETE THE FILE
ERJMP .+1 ;[7172]NO DAMAGE DONE
MOVE T1,BTJFN1 ;[7172]GET BACK THE JFN
TXO T1,DF%FGT!DF%EXP ;GET RID OF POINTER TO INDEX BLOCK
; AND RELEASE FDB (SEE DSKDEL)
DELF ; IN THE DIRECTORY
JFCL ;IGNORE FAILURE. PRIVATE COPY HAS BEEN
; CREATED ANYWAY
MOVE T1,BTJFN1 ;T1/JFN
RLJFN ;RELEASE THE JFN
JFCL ;IGNORE FAILURE
DSKU10: MOVE T1,STRN07 ;T1/STRUCTURE NUMBER
CALL WRTBTB ;WRITE THE BIT TABLE FILE
RETBAD (,<OKSKED>) ;FAILED
DSKUA7: MOVE T1,STRN07 ;T1/STRUCTURE NUMBER
MOVE T2,STRTAB(T1) ;T2/ADDRESS OF START OF SDB FOR THIS STRUCTURE
CALL FRESTR ;INDICATE STRUCTURE IS AVAILABLE
MOVE T1,STRN07 ;GET STRUCTURE AGAIN
MOVE T1,STRTAB(T1) ;GET SDB FOR THIS STRUCTURE
HRRZ T1,SDBBTB(T1) ;GET OFN OF THE NEW BIT TABLE
UMOVE T4,T1 ;get user's flags back
TXNE T4,DA%AIN ;aborting initialization?
CALL UPDOFN ;NO, THEN MAKE IT APPEAR ON THE DISK
OKSKED ;ALLOW SCHEDULING
RETSKP
;JACKET ROUTINES FOR DSKASN AND DSKASA
DSKUAA: TDZA T4,T4 ;OFFSET 0
DSKUAN: MOVEI T4,1 ;OFFSET 1
SETO T3,0 ;SAY SINGLE ASSIGN
CALL @[ IFIW!DSKASG
IFIW!DSKASN](T4) ;CALL CORRECT ROUTINE
RETBAD () ;FAILURE
UMOVEM T1,1 ;RETURN ADDRESS ASSIGNED
RETSKP ;GOOD RETURN
SUBTTL DSKSP - Get disk usage statistics
;DSKSP - GET DISK USAGE STATISTICS
;ACCEPTS:
; T1/STRUCTURE NUMBER
; CALL DSKSP
;RETURNS +1: ALWAYS
; T1/NUMBER OF USED PAGES
; T2/NUMBER OF FREE PAGES
DSKSP:: STKVAR <STRN10,FRECNT>
EA.ENT
MOVEM T1,STRN10 ;SAVE THE STRUCTURE NUMBER
CALL MAPBTB ;MAP INDEX BLOCK INTO BTBBAS, LOCK INTO CORE,
; LOCK BTBLCK, GO NOSKED
MOVE T3,STRN10 ;GET STRUCTURE NUMBER
MOVE T3,STRTAB(T3) ;POINT TO START OF SDB FOR THIS STRUCTURE
MOVN T4,SDBCYL(T3) ;(-TOTAL CYLINDERS IN STRUCTURE)
MOVEI T3,LOTRK
ADD T3,BTBORA ;POINT TO WORD IN TOP OF BIT TABLE
SETZ T2, ;SETUP TO EXAMINE ALL TRACKS
DSKSP1: ADD T2,0(T3) ;ADD FREE COUNT OF THIS TRACK
AOS T3 ;NEXT WORD
AOJL T4,DSKSP1 ;DO ALL TRACKS
MOVEM T2,FRECNT ;SAVE COUNT OF FREE PAGES
MOVE T1,STRN10 ;T1/STRUCTURE NUMBER
CALL UMPBTB ;UNMAP INDEX BLOCK FROM BTBBAS, UNLOCK CORE PAGE,
; UNLOCK BTBLCK, GO OKSKED
MOVE T3,STRN10 ;GET STRUCTURE NUMBER
MOVE T3,STRTAB(T3) ;POINT TO START OF SDB FOR THIS STRUCTURE
MOVE T1,SDBCYL(T3) ;GET TOTAL CYLINDERS ON STRUCTURE
MOVE T3,SDBTYP(T3) ;POINT TO SIZE DATA FOR THIS DISK TYPE
IMUL T1,PAGCYL(T3) ;CONVERT CYLINDERS TO PAGES ON STRUCTURE
MOVE T2,FRECNT ;RESTORE FREE COUNT
SUB T1,T2 ;USED = TOTAL - FREE
RET
SUBTTL .GDSKC - JSYS to get count of free pages on a structure
;.GDSKC - JSYS TO GET COUNT OF FREE PAGES ON A STRUCTURE
;ACCEPTS:
; T1/DEVICE DESIGNATOR (MUST BE DISK)
;RETURNS +1: ALWAYS
; T1/NUMBER OF PAGES USED
; T2/NUMBER OF PAGES FREE
;NOTE: IF THE BIT TABLE IS IN THE PROCESS OF BEING INITIALIZED,
;D1%INI WILL BE SET IN DEVCH1. IF THE FORK DOING THIS JSYS IS DOING THE
;INIT, THE JSYS WILL SUCCEED. HOWEVER, IT IS POSSIBLE THE SDBFRC WILL
;NOT BE SET UP CORRECTLY.
.GDSKC::MCENT ;JSYS ENTRY
STKVAR <STRN17>
UMOVE T1,T1 ;GET DEVICE DESIGNATOR
CALL CHKSTR ;SEE IF VALID STRUCTURE, RETURN NO. IN AC1
ITERR(DEVX1) ;STRUCTURE DOES NOT EXIST
MOVEM T1,STRN17 ;SAVE STR #
CALL GSTRPG ;GET COUNTS. RETURNS USED IN T1, FREE IN T2
UMOVEM T1,1 ;PAGES USED
UMOVEM T2,2 ;PAGES FREE
MOVE T1,STRN17 ;UNLOCK STR
CALL ULKSTR ;...
JRST MRETN
SUBTTL CHKSTR - Convert device designator to structure number
;CHKSTR - CONVERT DEVICE DESIGNATOR TO STRUCTURE NUMBER
;ACCEPTS:
; T1/DEVICE DESIGNATOR
;RETURNS +1: STRUCTURE DOES NOT EXIST OR IS BEING INITIALIZED
; +2: STRUCTURE EXISTS
; T1/STRUCTURE NUMBER
CHKSTR: HLRZ T2,T1 ;GET DEVICE TYPE
CAIE T2,.DVDES+.DVDSK ;IS IT A DISK
RET ;NO - RETURN
HRRZS T1 ;USE UNIQUE CODE
CAIN T1,-1 ;DSK?
LOAD T1,JSUC ;YES, GET CURRENT CONNECTED STR
CALL CNVSTR ;CONVERT TO STR #
RET ;NO - SUCH STR
MOVE T4,STRTAB(T1) ;GET SDB
MOVEI T2,DVXST0(T1) ;POINT TO THIS STR IN DEVXXX TABLE
MOVX T3,D1%INI ;TEST FOR STRUCTURE BEING INITIALIZED
TDNE T3,DEVCH1(T2) ;IF SO, DSKFRC MAY NOT BE SET UP
JRST [ LOAD T3,STRJB,(T4) ;BEING INITED. SEE WHAT FORK IS DOING IT
CAME T3,FORKX ;IS IT THIS FORK?
CALLRET ULKSTR ;NO - UNLOCK STR AND RETURN
JRST .+1] ;YES. CAN REFERENCE BIT TABLE INFO
RETSKP ;GOOD STRUCTURE, NOT BEING INITIALIZED
; OR BEING INITED BY THIS FORK
SUBTTL GSTRPG - Get page counts for a structure
;GSTRPG - GET PAGE COUNTS FOR A STRUCTURE
;ACCEPTS:
; T1/STRUCTURE NUMBER
;RETURNS +1: ALWAYS
; T1/COUNT OF USED PAGES ON THE STRUCTURE
; T2/COUNT OF FREE PAGES ON THE STRUCTURE
;THIS ROUTINE DOES NOT MAKE A CONSISTENCY CHECK. IT MERELY USES THE SDB VALUES
GSTRPG::MOVE T3,STRTAB(T1) ;POINT TO SDB FOR THIS STRUCTURE
BLOCK.
SAVEAC <T3> ;Save arg
SKIPE T1,SDBBTB(T3) ;Get bit table OFN
CALL OFNTKN ;Yes. Make sure we have it
ENDBK.
MOVE T2,SDBFRC(T3) ;GET NUMBER FREE PAGES FOR STRUCTURE
MOVE T1,SDBCYL(T3) ;GET TOTAL CYLINDERS IN STRUCTURE
MOVE T3,SDBTYP(T3) ;POINT TO SIZE DATA FOR THIS DISK TYPE
IMUL T1,PAGCYL(T3) ;CONVERT CYLINDERS TO TOTAL PAGES
SUB T1,T2 ;USED = TOTAL - FREE
RET
SUBTTL GETFRC - Get structure free count
;GETFRC - Get structure free count
;
; T3/ STR number
;
;Returns: +1 T4/ SDBFRC
RESCD
GETFRC::MOVE T4,STRTAB(T3) ;Get SDB address
MOVE T4,SDBFRC(T4) ;Get Free count
RET ;And done
SUBTTL STOFRC - Store free count
;STOFRC - Store free count
; T3/ STR number
; T4/ New SDBFRC
;Preserves T3
STOFRC::MOVE T3,STRTAB(T3) ;Get SDB
MOVEM T4,SDBFRC(T3) ;New value
LOAD T3,STRUS,(T3) ;REcover structure number
RET
SUBTTL .DSKOP - Disk Operate JSYS
;.DSKOP - DISK OPERATE JSYS - USER UTILITY DISK HANDLE
;ACCEPTS:
; T1/ 1B1+CHANNEL NUMBER (BITS 2-6) + UNIT NUMBER (BITS 7-12)
; + SECTOR NUMBER WITHIN UNIT (BITS 13-35)
; OR
; 1B0 + 0 (BITS 2-6) + SECTOR NUMBER WITHIN STRUCTURE (BITS 7-35)
; OR
; 1B0 + -1 (BITS 2-6) +SECTOR NUMBER WITHIN STRUCTURE (BITS 7-35)
; T2/FLAGS + NUMBER OF WORDS
; T3/ STARTING ADDRESS IN USER'S ADDRESS SPACE
; T4/ DEPENDS ON T1 AS FOLLOWS:
; IF 1B0 SET AND BITS 2-6 ARE -1, DEVICE DESIGNATOR FOR STRUCTURE
; IF 1B1 SET AND DOP%NF ALSO, THE CHAN, CONTROLLER, AND
; UNIT NUMBERS TO BE USED (CKU VALUE)
; OTHERWISE, IGNORED
;
;RETURNS +1: ALWAYS,
; T1/ 0 ON SUCCESS, NON-ZERO ON FAILURE
;
;FLAGS IN T2:
; 1B9 (DOP%NF) Use new format for channel, controller,
; and unit numbers (CKU number)
; 1B10 (DOP%EO) Error if unit is offline
; 1B11 (DOP%IL) Inhibit error logging
; 1B12 (DOP%IR) Inhibit error recovery
; 1B13 (DOP%PS) Physical sector addressing
; 1B14 (DOP%WR) Write access
;
;CURRENTLY, IF THE TRANSFER CROSSES A PAGE BOUNDARY, THEN ERROR CORRECTION
;AND LOGGING ARE INHIBITED SINCE PHYSIO DOESN'T YET KNOW HOW TO HANDLE
;MULTIPLE CCW WORDS IN ERROR RECOVERY.
SWAPCD
.DSKOP::MCENT
STKVAR <STRNXX,UAC2,UAC3,SAVLCK> ;ALLOCATE STORAGE
SETOM STRNXX ;NO STRUCTURE TO UNLOCK YET
MOVEM T1,Q1 ;REMEMBER AC FOR LATER
MOVEM T2,UAC2 ;PRESERVE USER'S FLAGS AND COUNT
MOVEM T3,UAC3 ;PRESERVE ADDRESS ALSO
MOVE T4,CAPENB ;GET USER'S CAPABILITIES
TXNN T4,SC%WHL!SC%OPR!SC%MNT ;HAVE PROPER PRIVILEGES?
ITERR (WHELX1) ;NO. COMPLAIN
TXNE T2,-1-<DOP%NF!DOP%IL!DOP%PS!DOP%IR!DOP%WR!DOP%CT!DOP%EO> ;ANY UNUSED FLAGS USED?
ITERR (DECRSV) ;YES, COMPLAIN
LOAD Q2,DOP%AT,Q1 ;GET ADDRESS TYPE
CAIE Q2,.DOPSR ;[7.1063]Structure relative?
IFSKP. ;[7.1063]If yes...
LOAD T1,DOP%SN,Q1 ;[7.1063]Yes. Get SN
SKIPE T1 ;[7.1063]Zero implies PS:
IFSKP. ;[7.1063]If zero...
MOVEI T1,PSNUM ;[7.1063]Use PS: if zero
SKIPN STRTAB(A) ;[7.1063]Make sure it's here
ITERR (DSKOX3) ;[7.1063]Invalid structure number
JRST DSKOP3 ;[7.1063]Continue (no structure to lock)
ENDIF. ;[7.1063]
CAIE T1,<.RTJST (DOP%SN,DOP%SN)> ;[7.1063]Is field all ones?
ITERR (DSKOX3) ;[7.1063]Invalid structure number
UMOVE T1,4 ;[7.1063]Get device designator
CALL CHKSTR ;[7.1063](T1/T1)Convert to structure number
ITERR (DSKOX3) ;[7.1063]None
MOVEM T1,STRNXX ;[7.1063]Remember structure to unlock
CALL CKSTOF ;[7.1063](T1/T1)Is the structure offline?
IFNSK. ;[7.1063]If yes...
EXCH T1,STRNXX ;[7.1063]Get back structure number
CALL ULKSTR ;[7.1063](T1/)Unlock the structure
EXCH T1,STRNXX ;[7.1063]Get back error code
ITERR () ;[7.1063]Return the error
ENDIF. ;[7.1063]
JRST DSKOP3 ;[7.1063]Proceed
ENDIF. ;[7.1063]
CAIE Q2,.DOPPU ;PHYSICAL?
ITERR (DSKOX4) ;NO, THEN ILLEGAL MODE WAS REQUESTED
UMOVE P4,4 ;GET POSSIBLE CHANNEL, CONTROLLER, UNIT NUMBERS
MOVE T1,UAC2 ;ALSO GET USER'S FLAGS
TXNE T1,DOP%NF ;ALREADY SETUP IN NEW FORMAT?
JRST DSKOPN ;YES, GO ON
MOVX P4,DOP%K2 ;OLD FORMAT, GET VALUE FOR NO CONTROLLER
LOAD T1,DOP%CN,Q1 ;GET CHANNEL FROM OLD FORMAT LOCATION
STOR T1,DOP%C2,P4 ;STORE AWAY IN NEW FORMAT
LOAD T1,DOP%UN,Q1 ;GET UNIT NUMBER FROM OLD STYLE LOCATION
STOR T1,DOP%U2,P4 ;STORE AWAY IN NEW FORMAT TOO
;...
DSKOPN: MOVE T1,P4 ;GET CKU NUMBER
CALL CKUNPK ;UNPACK THEM
CALL CHKCKU ;SEE IF THEY ARE LEGAL
ITERR () ;NO, GIVE AN ERROR
MOVE P3,T1 ;REMEMBER THE UDB
DSKOP3: MOVE T4,CAPENB ;GET CAPS AGAIN
TXNE T4,SC%WHL!SC%OPR ;WHEEL OR OPERATOR?
JRST DSKOP2 ;WHEELS AND OPERATORS CAN DO IT ALL
MOVE T2,UAC2 ;GET USER FLAGS
TXNN T2,DOP%WR ;WANT TO WRITE IT?
JRST DSKOP2 ;NO. ALLOW MAINT TO READ ANYTHING
CAIN Q2,.DOPPU ;WANT TO WRITE PHYSICAL?
SKIPL UDBSTR(P3) ;AND UNIT NOT PART OF A STRUCTURE?
ITERR (WHELX1,<SKIPL T1,STRNXX ;NO, GET STRUCTURE NUMBER
CALL ULKSTR>) ;UNLOCK IT AND RETURN ERROR
DSKOP2: NOINT ;NO INTERRUPTIONS NOW
MOVE T1,UAC3 ;GET USER ADDRESS
HRRZ T2,UAC2 ;AND WORD COUNT
MOVX T3,DOP%WR ;GET WRITE FLAG READY
ANDCM T3,UAC2 ;MAKE VALUE INDICATING IF CORE IS TO BE WRITTEN
CALL IOLOCK ;LOCK DOWN NECESSARY USER PAGES
ITERR(,<EXCH T1,STRNXX ;FAILED, SAVE ERROR CODE AND GET STR INDEX
SKIPL T1 ;WAS ONE SAVED?
CALL ULKSTR ;YES, UNLOCK THE STRUCTURE
OKINT ;INTERRUPTS OK AGAIN
MOVE T1,STRNXX>) ;RESTORE ERROR CODE
MOVEM T1,SAVLCK ;REMEMBER ADDRESS OF PAGE LIST
MOVE T2,UAC3 ;GET USER ADDRESS AGAIN
HRRZ T3,UAC2 ;AND WORD COUNT AGAIN
HRRZ P1,STRTAB+PSNUM ;** TEMPORARY CROCK TO GET CDB ADDRESS **
HRRZ P1,SDBUDB(P1) ;GET A UDB
HRRZ P1,UDBCDB(P1) ;THEN GET A CDB ADDRESS
CALL IOLCCW ;TURN LIST OF PAGES INTO LIST OF CCW WORDS
MOVE T1,SAVLCK ;GET ADDRESS OF CCW LIST
MOVE T1,(T1) ;THEN GET AOBJN POINTER TO LIST
TLC T1,-1 ;CHECK FOR ONLY ONE ELEMENT IN LIST
TLCE T1,-1 ;IS THERE ONLY ONE?
JRST DSKOP4 ;NO, SKIP ON
MOVE T1,(T1) ;YES, GET THE CCW WORD
HRRZ T2,CDBDSP(P1) ;GET DISPATCH ADDRESS
CALL CDSCCA(T2) ;EXTRACT THE PHYSICAL ADDRESS FROM THE CCW
SKIPA P3,T1 ;THEN SAVE IT
;...
DSKOP4: SETZM P3 ;OR ZERO AC AS A FLAG
LOAD T1,DOP%RA,Q1 ;GET DISK ADDRESS
CAIE Q2,.DOPSR ;STRUCTURE RELATIVE?
LOAD T1,DOP%UA,Q1 ;NO. GET UNIT RELATIVE ADDRESS
MOVE T2,UAC2 ;GET FLAGS AND COUNT
SKIPN T3,P3 ;GET PHYSICAL ADDRESS IF ONLY ONE CCW
MOVE T3,SAVLCK ;OR POINTER TO CCW LIST IF MULTIPLE ONES
SKIPGE T4,STRNXX ;GET STRUCTURE NUMBER
MOVEI T4,PSNUM ;USE PS IF -1
CAIN Q2,.DOPPU ;PHYSICAL ADDRESSES?
JRST [ TXO T2,1B0 ;YES. TELL UDSKIO WE HAVE THE NUMBERS
MOVE T4,P4 ;GET CKU VALUE TO USE
JRST .+1] ;AND GO DO IT
JUMPN P3,DSKOP5 ;DOING MULTI-PAGE TRANSFER?
TXO T2,DOP%EO ;YES, GENERATE ERRORS ON OFF-LINE
CALL MDSKIO ;CALL MULTIPLE-PAGE ROUTINE
SKIPA
DSKOP5: CALL UDSKIO ;HERE FOR SINGLE PAGE TRANSFER
UMOVEM T1,1 ;RETURN ERROR BITS
SKIPE T1 ;[8862] Any error code returned?
HRRZM T1,LSTERR ;[8862] Yes, store it in LSTERR for later
MOVE T1,SAVLCK ;GET POINTER TO LIST OF CCW WORDS
MOVX T2,DOP%WR ;GET WRITE FLAG READY
ANDCM T2,UAC2 ;CREATE FLAG INDICATING IF CORE WAS WRITTEN
CALL IOCNLK ;UNLOCK ALL PAGES THAT WERE LOCKED
OKINT ;ALLOW INTS AGAIN
SKIPL T1,STRNXX ;SAVED STR #
CALL ULKSTR ;YES - UNLOCK IT
JRST MRETN ;[8862] Return with AC1/zero=success
SUBTTL CHKBT - Check consistency of bit table
;CHKBT - CHECK CONSISTENCY OF BIT TABLE
;ACCEPTS:
; T1/ STRUCTURE NUMBER
; T2/ FLAGS
; CALL CHKBT
;RETURNS +1: CHKB0 FOUND ERRORS
; T1/ COUNT OF USED PAGES
; T2/ COUNT OF FREE PAGES
; T3/ ERROR COUNT
; +2: NO ERRORS,
; T1/ COUNT OF USED PAGES
; T2/ COUNT OF FREE PAGES
; T3/ ERROR COUNT (ZERO)
;COMPARES COUNT OF FREE PAGES PER TRACK WITH BITS FOR EACH PAGE IN THE TRACK.
;IF THEY DISAGREE, FIXES THE COUNT AND PRINTS MESSAGE IF REQUESTED IN T2
;ALSO FIXES THE FREE COUNT FOR THE ENTIRE STRUCTURE
CHKBT:: STKVAR <STRN11,CHKBTE>
EA.ENT
MOVEM T1,STRN11 ;SAVE STRUCTURE NUMBER
CALL CHKB0 ;CHECK CONSISTENCY
MOVEM T1,CHKBTE ;SAVE COUNT OF ERRORS
MOVE T1,STRN11 ;NO. T1/STRUCTURE NUMBER
CALL DSKSP ;CALCULATE FREE COUNT
;T1/USED PAGES, T2/FREE PAGES
MOVE T3,STRN11 ;GET STRUCTURE NUMBER
MOVE T3,STRTAB(T3) ;POINT TO START OF SDB FOR THIS STRUCTURE
MOVEM T2,SDBFRC(T3) ;STORE NEW COUNT OF FREE PAGES IN SDB
SKIPE T3,CHKBTE ;WERE THERE ANY ERRORS?
RETBAD ;YES. TAKE ERROR RETURN
RETSKP ;NO. TAKE SUCCESS RETURN
SUBTTL CHKB0 - Check free page count
;CHKB0 - CHECK FREE PAGE COUNT AGAINST BITS FOR INDIVIDUAL PAGES
;ACCEPTS:
; T1/ STRUCTURE NUMBER
; T2/ FLAGS
;RETURNS +1: ALWAYS
; T1/COUNT OF ERRORS
;USE OF P REGISTERS:
; P1/ADDRESS OF SDB FOR THIS STRUCTURE
; P2/ADDRESS OF SIZE DATA FOR THIS DISK TYPE
CHKB0: SAVEPQ
STKVAR<STRN12,ERRCNT,GOODCT,BADCNT,CKBTFL>
MOVEM T1,STRN12 ;SAVE THE STRUCTURE NUMBER
MOVEM T2,CKBTFL ;SAVE FLAGS
MOVE P1,STRTAB(T1) ;P1/ADDRESS OF SDB FOR THIS STRUCTURE
MOVE P2,SDBTYP(P1) ;P2/ADDRESS OF SIZE DATA FOR THIS DISK TYPE
CALL MAPBTB ;MAP INDEX BLOCK INTO BTBBAS, LOCK INTO CORE,
; LOCK BTBLCK, GO NOSKED
SETZM ERRCNT ;INITIALIZE COUNT OF ERRORS
MOVN 7,SDBCYL(P1) ;7/(-TOTAL CYLINDERS IN STRUCTURE,,LOWEST CYL)
HRLZ 7,7
HRRI 7,LOTRK
CHKB5: MOVEI 6,0(7) ;GET NEXT CYLINDER NUMBER
IMUL 6,BTWCYL(P2) ;COMPUTE OFFSET IN BIT PART OF TABLE
ADD 6,BTBORA ;POINT TO ACTUAL WORD IN BIT PART OF TABLE
ADD 6,SDBBT0(P1)
MOVE 4,PAGCYL(P2) ;COUNT BACKWARDS FROM NO. PAGES PER CYLINDER
SETZ 5, ;WILL COUNT FREE PAGES FOUND
CHKB2: MOVE 1,0(6) ;GET WORD OF BITS
MOVNI 2,^D36 ;36 OF THEM...
CHKB1: TDNE 1,BITS+^D36(2) ;THIS PAGE FREE?
AOJ 5, ;YES, COUNT IT
SOJLE 4,CHKB3 ;STOP IF CHECKED ALL PAGES THIS TRACK
AOJL 2,CHKB1 ;LOOP OVER BITS IN WORD
AOJA 6,CHKB2 ;LOOP OVER WORDS
CHKB3: MOVE 1,BTBORA ;POINT TO BEGINNING OF BIT TABLE
ADDI 1,0(7) ;POINT TO WORD FOR THIS TRACK
CAME 5,0(1) ;COUNT CORRECT AS REMEMBERED?
JRST CHKB4 ;NO
CHKB6: AOBJN 7,CHKB5 ;YES, LOOP OVER TRACKS
MOVE 1,STRN12 ;1/STRUCTURE NUMBER
CALL UMPBTB ;UNMAP INDEX BLOCK FROM BTBBAS, UNLOCK CORE PAGE,
; UNLOCK BTBLCK, GO OKSKED
MOVE 1,ERRCNT ;RESTORE COUNT OF ERRORS
RET
;INCONSISTENCY BETWEEN COUNT OF FREE PAGES FOR A TRACK AND THE BITS FOR
;EACH PAGE. REPORT THE INCONSISTENCY AND CONTINUE THE SEARCH.
;T1/ ADDRESS OF WORD IN FIRST PART OF BIT TABLE CONTAINING FREE PAGE COUNT
;5/ COUNT AS OBTAINED FROM ADDING BITS
;7/CYLINDER NUMBER
CHKB4: MOVEM 5,GOODCT ;SAVE THE COUNT OF BITS
EXCH 5,0(1) ;STORE NEW COUNT, GET OLD ONE
MOVEM 5,BADCNT ;SAVE OLD COUNT OF FREE PAGES
AOS 6,ERRCNT ;COUNT ERRORS
MOVE A,CKBTFL ;GET FLAGS
TXNN A,MI%MSG ;MESSAGES DESIRED ?
JRST CHKB6 ;NO, GO ON
CAIL 6,^D20 ;YES, REPORTED ENOUGH?
JRST [ CAIE 6,^D20 ;YES, NOTED OTHERS ALREADY?
JRST CHKB6 ;YES, CONTINUE QUIETLY
MOVE 1,STRN12 ;T1/STRUCTURE NUMBER
CALL UMPBTB ;UNMAP INDEX BLOCK FROM BTBBAS, UNLOCK CORE PAGE,
; UNLOCK BTBLCK, GO OKSKED
HRROI 1,[ASCIZ /
and others...
/]
PSOUT ;NOTE ADDITIONAL ERRORS AFTER CUTOFF
MOVE 1,STRN12 ;T1/STRUCTURE NUMBER
CALL MAPBTB ;[7.1112]MAP INDEX BLOCK INTO BTBBAS
JRST CHKB6] ;CONTINUE WITH SCAN
MOVE 1,STRN12 ;T1/STRUCTURE NUMBER
CALL UMPBTB ;UNMAP INDEX BLOCK FROM BTBBAS, UNLOCK CORE PAGE,
; UNLOCK BTBLCK, GO OKSKED
HRROI 1,[ASCIZ /
Bittable Inconsistency (counts will be corrected)
Trk Cnt Bits
/] ;[7.1230]
CAIG 6,1 ;FIRST ERROR?
PSOUT ;YES, PRINT HEADING
MOVEI 1,101
MOVX T3,<NO%LFL+FLD(4,NO%COL)+FLD(10,NO%RDX)> ;LEADING FILLER,
MOVEI 2,0(7) ;GET CYLINDER NUMBER
NOUT ;PRINT TRACK NUMBER
MOVX T3,<NO%LFL+FLD(4,NO%COL)+FLD(10,NO%RDX)> ;FAILED. RESTORE FLAGS
MOVE 2,BADCNT ;RESTORE FREE PAGE COUNT FROM TOP OF BIT TABLE
NOUT ;PRINT FREE PAGE COUNT
MOVX T3,<NO%LFL+FLD(4,NO%COL)+FLD(10,NO%RDX)> ;FAILED. RESTORE FLAGS
MOVE 2,GOODCT ;GET COUNT FROM BITS
ANDI 2,777 ;IN CASE REALLY FOULED UP
NOUT ;PRINT COUNT FROM BITS
JFCL
HRROI T1,CRLF ;[7.1230] Point to a CRLF
PSOUT
MOVE 1,STRN12 ;T1/ STRUCTURE NUMBER
CALL MAPBTB ;MAP INDEX BLOCK INTO BTBBAS, LOCK INTO CORE,
; LOCK BTBLCK, GO NOSKED
JRST CHKB6 ;CONTINUE SCAN
SUBTTL UPDBTB - Update bit table
;UPDBTB - UPDATE BIT TABLE--CAUSE CHANGED PAGES TO BE WRITTEN TO DISK
;ACCEPTS:
; T1/STRUCTURE NUMBER
; CALL UPDBTB
;RETURNS +1: ALWAYS
;NOTE: IF THE BIT TABLE IS IN PRIVATE PAGES RATHER THAN A FILE,
;ITS OFN IS >= NOFN. UPDPGS CANNOT BE CALLED IN THIS CASE BECAUSE
;IT CALLS UPDOFN, WHICH WANTS THE PAGES TO BE IN A FILE
UPDBTB::MOVE T4,T1 ;GET UNIT NUMBER
EA.ENT
REPEAT 0,<
ADDI T4,DVXST0 ;POINT TO THIS STRUCTURE IN DEVXXX TABLES
MOVX T3,D1%INI ;SET UP BIT FOR INITING STRUCTURE
TDNE T3,DEVCH1(T4) ;IF SO, DON'T TRY TO DO THIS BECAUSE
; UPDPGS CALLS OPDOFN, WHICH WANTS BIT TABLE
; TO BE A FILE.
RET
>
MOVE T3,STRTAB(T1) ;POINT TO START OF SDB FOR THIS STRUCTURE
SKIPE T1,SDBBTB(T3) ;GET OFN FOR BIT TABLE
CAIL T1,NOFN ;IS IT A REAL OFN?
RET ;NO OFN FOR BIT TABLE. DON'T TRY TO UPDATE
; IFN CFSCOD,< ;If CFS stuff
LOAD T2,SPTST,(T1) ;Get state of the bit table
TMNN SPTSFD,(T1) ;Is it already purged?
CAIE T2,.SPSWR ;No, write access?
RET ;No. All done then (can't be modified here)
; > ;IFN CFSCOD
HRLZS T1 ;T1/(OFN,,PAGE 0)
MOVE T2,SDBBT0(T3) ;GET SIZE OF TOP HALF OF BIT TABLE
ADD T2,SDBBT1(T3) ;ADD SIZE OF BOTTOM
ADDI T2,<PGSIZ-1> ;ROUND UP TO END OF PAGE
IDIVI T2,PGSIZ ;T2/ PAGE COUNT
SKIPE T1 ;DO NOTHING IF NO OFN ASSIGNED
CALL UPDPGS ;UPDATE PAGES
RET
SUBTTL BOTSYS/FEFSYS - Allocate the FE file system
;BOTSYS/FEFSYS - Allocate the FE file system
;THIS ROUTINE WILL ALLOCATE THE FE FILE SYSTEM ON THE DUAL-PORTED
;DISK DRIVE AND THE BOOTSTRAP.BIN FILE.
; IT IS EXECUTED ONLY AT SYSTEM REFRESH TIME AND
;IS DONE AS PART OF THE BIT TABLE INITIALIZATION LOGIC.
;ACCEPTS:
; T1/STRUCTURE NUMBER
; T2/NUMBER OF PAGES TO ALLOCATE
; CALL FEFSYS
;RETURNS: +1 FAILURE
; +2 SUCCESS
; LOCAL VARIABLES --
;STRN13 ;STRUCTURE NUMBER
;OFPTT ;OFN OF PTT
;OFNPT ;OFN OF PT
;FEFNAM ;GTJFN STRING PLACED HERE
;FEFPAG ;NUMBER OF PAGES SPECIFIED FOR FE FILE SYSTEM
;FEFCYL ;NUMBER OF CYLINDERS FOR FE FILE SYSTEM
BOTSYS::TDZA C,C ;SET BOOT FLAG
FEFSYS::SETO C, ;SET FE FLAG
JUMPE T2,RSKP ;RETURN SUCCESS IF NOTHING TO ALLOCATE
SKIPG T2 ;NEGATIVE # OF PAGES SPECIFIED ?
RET ;YES, RETURN FAILURE
EA.ENT
SAVEPQ
JSBVAR <STRTY1,STRN13,OFPTT,OFNPT,<FEFNAM,^D12>,FEFPAG,FEFCYL,FILTYP>,R
MOVEM C,FILTYP ;SAVE TYPE OF ENTRY
DMOVEM A,P1 ;SAVE STRUCTURE # AND # OF PAGES FOR FE FILE SYS
MOVEM P1,STRN13 ;SAVE STRUCTURE NUMBER
MOVEM P2,FEFPAG ;SAVE NUMBER OF PAGES INITIALLY SPECIFIED
HRRZ Q1,STRTAB(P1) ;Q1/ADDRESS OF SDB FOR THIS STRUCTURE
MOVN Q2,SDBNUM(Q1) ;NUMBER OF UNITS IN STRUCTURE
MOVSI Q2,0(Q2) ;FORM AOBJN POINTER
HRRI Q2,SDBUDB(Q1) ;FIRST UDB
MOVE Q3,Q2 ;COPY AOBJN POINTER
FEFSY0: HRRZ A,0(Q3) ;GET UDB
CALL WRBOOT ;WRITE BOOT BLOCK
AOBJN Q3,FEFSY0 ;LOOP FO ALL UNITS
MOVE A,Q1 ;COPY SDB
MOVE B,Q2 ;COPY AOBJN POINTER AGAIN
;...
;LOOP THROUGH LOGICAL UNITS LOOKING FOR DUAL-PORTED DRIVE
FESYS2: MOVE D,0(B) ;UDB ADDRESS
MOVX C,US.PGM ;FLAG FOR THE DUAL-PORTED DRIVE
SKIPN UDB2ND(D) ;DUAL PORTED, BOTH PORTS ON THE -20?
TDNN C,UDBSTS(D) ;NO, IS THIS DUAL PORTED (ON -11)?
SKIPA ;NOT THE FRONT-END DISK
JRST FEFSY1 ;YES
AOBJN B,FESYS2 ;LOOK AT NEXT
REPEAT 0,<
SKIPN FILTYP ;IF BOOTSTRAP NO BUGCHECK
BUG.(CHK,NO2PRT,DSKALC,HARD,<FEFSYS - No dual-ported disk. Using logical 0>,,<
Cause: This BUG. has been removed from the monitor and does not occur.
>)
> ;End REPEAT 0
MOVEI B,SDBUDB(Q1) ;POINTER TO LOGICAL 0
FEFSY1: MOVE P4,B ;SAVE UDB INDEX
MOVEI P1,0(B) ;ADDRESS OF UDB POINTER
SUBI P1,SDBUDB(Q1) ;CALCULATE RELATIVE PCAK NUMBER
MOVE Q2,SDBTYP(Q1) ;Q2/ADDRESS OF SIZE DATA FOR THIS DISK TYPE
MOVEM Q2,STRTY1 ;SAVE IT FOR FEWRTH
MOVE A,FEFPAG ;GET DESIRED # OF PAGES IN FE FILE SYSTEM
IDIV A,PAGCYL(Q2) ;COMPUTE # OF CYLINDERS
SKIPE B ;ROUND UP TO THE NEXT FULL CYLINDER
ADDI A,1 ; IF A PARTIAL CYLINDER REQUESTED
MOVEM A,FEFCYL ;SAVE # OF CYLINDERS TO ALLOCATE
IMUL A,PAGCYL(Q2) ;COMPUTE ACTUAL # OF PAGES TO ALLOCATE
SKIPE FILTYP ;SKIP IF BOOTSTRAP.BIN SINCE IT REALLY
;DOESN'T NEED A FULL CYL OF SPACE
MOVEM A,FEFPAG ;SAVE ACTUAL # OF PAGES TO ALLOCATE
IMUL P1,CYLUNT(Q2) ;NOW GET FIRST CYLINDER ON PACK
MOVE P2,P1 ;MOVE TRACK NUMBER
ADD P1,CYLUNT(Q2) ;LAST TRACK ON THE PACK
SOS P1 ; ...
MOVE A,STRN13 ;1/STRUCTURE NUMBER
CALL MAPBTB ;MAP INDEX BLOCK INTO BTBBAS, LOCK INTO CORE,
; LOCK BTBLCK, GO NOSKED
;...
;A DUAL-PORTED DRIVE HAS BEEN FOUND. FIND A BLOCK OF CONTIGUOUS
;CYLINDERS LARGE ENOUGH TO HOLD THE FRONT END FILE SYSTEM.
;EACH CYLINDER IN THE BLOCK MUST HAVE ALL ITS PAGES FREE
;P2/CYLINDER NUMBER RELATIVE TO START OF STRUCTURE FOR FIRST CYLINDER
; ON THIS UNIT
;P1/CYLINDER NUMBER RELATIVE TO START OF STRUCTURE FOR LAST CYLINDER
; ON THIS UNIT
FEFSY3: MOVE C,FEFCYL ;GET # OF CYLINDERS TO ALLOCATE
ADD C,P2 ;COMPUTE LAST CYLINDER # TO ALLOCATE
CAML C,P1 ;ENOUGH SPACE LEFT ON THIS PACK ?
JRST [ MOVE A,STRN13 ;NO, GET STRUCTURE NUMBER
CALL UMPBTB ;GO UNMAP THE BIT TABLE AND RETURN FAILURE
JRST FEFER0] ;GO RELEASE LOCAL VARIABLE BLOCK AND RETURN
MOVE D,P2 ;GET NUMBER OF FIRST CYLINDER TO USE
MOVN P2,FEFCYL ;GET -<# OF CYLINDERS TO ALLOCATE>
ADD D,BTBORA ;COMPUTE ADDRESS IN BIT TABLE
MOVE C,PAGCYL(Q2) ;GET # OF PAGES ON EACH CYLINDER FOR THIS PACK
FEFSY4: CAME C,0(D) ;THIS ONE GOOD?
JRST FEFSY5 ;NO
AOS D
AOJL P2,FEFSY4 ;YES. DO ALL OF THEM
MOVE P2,D ;GET SIZE
SUB P2,BTBORA ;SUBTRACT BIT MAP START
SUB P2,FEFCYL ;BACK UP TO BEGINNING
JRST FEFSY6 ;FOUND A REGION
FEFSY5: XMOVEI P2,1(D) ;SKIP THIS BAD TRACK AND GO ON
SUB P2,BTBORA ;RESTORE TRACK NUMBER
JRST FEFSY3 ;AND TRY AGAIN
;FOUND A REGION TO ALLOCATE.
; P2/ LOWEST TRACK NUMBER IN REGION
FEFSY6: MOVE A,STRN13 ;1/STRUCTURE NUMBER
CALL UMPBTB ;UNMAP INDEX BLOCK FROM BTBBAS, UNLOCK CORE PAGE,
; UNLOCK BTBLCK, GO OKSKED
MOVEI P1,0(P2) ;GET FIRST TRACK NUMBER
IMUL P1,SECCYL(Q2) ;CONVERT TO SECTOR NUMBER
MOVE P3,FEFPAG ;GET # OF PAGES TO ALLOCATE
MOVE P2,P1 ;SAVE STARTING SECTOR
;WRITE THE HOME BLOCK SAYING THIS PACK HAS THE FE FILE SYSTEM
CALL ASGPAG ;GET A PAGE
JRST FEFER0 ;FAILED, RELEASE LOCAL VARIABLE BLOCK AND RETURN
MOVE Q3,A ;SAVE PAGE
MOVE B,P4 ;GET SDBUDB POINTER
MOVE C,P1 ;START SECTOR
MOVE D,P3 ;# OF PAGES
SKIPN FILTYP ;CHECK FILE TYPE
JRST [CALL BOWRTH ;WRITE BOOT FILE
JRST FEFER1 ;RELEASE ASSIGNED PAGE AND RETURN ERROR
JRST .+3] ;SKIP OVER FE WRITE
CALL FEWRTH ;GO WRITE THE HOME BLOCK
JRST FEFER1 ;RELEASE ASSIGNED PAGE AND RETURN ERROR
; ..
;ASSIGN ALL PAGES IN THE BLOCK.
; P1/FIRST SECTOR
; P2/FIRST SECTOR
; Q2/ADDRESS OF SIZE DATA FOR THIS DISK TYPE
FEFSY7: MOVE A,P1 ;1/SECTOR NUMBER
MOVE B,STRN13 ;2/STRUCTURE NUMBER
CALL DSKASA ;ASSIGN IT
JRST FEFER1 ;FAILED, RELEASE SPACE AND RETURN ERROR
ADD P1,SECPAG(Q2) ;NEXT PAGE
SOJG P3,FEFSY7 ;ASSIGN ALL RELEVANT PAGES
;NOW THAT THE REGION IS ALLOCATED, A FILE MUST BE CREATED WHICH
;DEFINES THE SELECTED TRACKS.
; P2/ STARTING SECTOR IN REGION
HRROI A,FEFNAM ;T1/ ADDRS OF BLOCK FOR NAME
MOVE B,STRN13 ;T2/STRUCTURE NUMBER
HRROI C,[ASCIZ/<ROOT-DIRECTORY>FRONT-END-FILE-SYSTEM.BIN;P770000/]
SKIPN FILTYP ;CHECK FOR BOOT FILE
HRROI C,[ASCIZ/<ROOT-DIRECTORY>BOOTSTRAP.BIN;P770000/]
;C/ NAME OF FILE WITHOUT STRUCTURE
CALL STRST ;CREATE FILE SPEC INCLUDING THE STRUCTURE NAME
; IN FREE SPACE POINTED TO BY FEFNAM
JRST FEFERR ;FAILED. GO RELEASE FREE SPACE
MOVX A,GJ%NEW!GJ%SHT!GJ%PHY ;[7337] GTJFN flags - no log name expand
HRROI B,FEFNAM ;B/ ADDRS OF FILE NAME
GTJFN ;GET A JFN FOR IT
JRST FEFERR ;NOT THERE. CANT FIX HOME BLOCK THEN
MOVE P3,A ;SAVE THE JFN
IMULI A,MLJFN ;MAKE IT AN INTERNAL INDEX
CALL GETFDT ;GET FDB FOR THIS JFN
JRST FEFER1 ;FAILED, RELEASE LOCAL VARIABLE BLOCK AND RETURN
MOVE P4,A ;SAVE FDB LOC
MOVE B,.FBCTL(P4) ;GET CONTROL WORD
TXZ B,FB%NXF ;MAKE IT EXISTANT
TXO B,FB%LNG!FB%NOD!FB%NDL ;[7172]MAKE IT LONG, NO DUMP
;[7172]AND 'NEVER DELETE' AS WELL
MOVEM B,.FBCTL(P4) ;BACK INTO THE FDB
MOVX B,AR%EXM ;EXEMPT FROM MIGRATION
IORM B,.FBBBT(P4) ;SET IT IN THE FDB
CALL ASGPAG ;NOW GET ONE FOR THE SUB PAGE TABLES
JRST FEFER1 ;FAILED, RELEASE SPACE AND RETURN ERROR
MOVE P5,A ;AND SAVE THIS AS WELL
;...
SETZ A, ;A/0 FOR FREE CHOICE OF SECTOR NUMBER
MOVE B,STRN13 ;B/STRUCTURE NUMBER
CALL DSKASN ;GET A DISK PAGE
JRST FEFER2 ;RELEASE ASSIGNED PAGES AND RETURN ERROR
MOVEM A,.FBADR(P4) ;SAVE THIS IN THE FDB
MOVE B,STRN13 ;2/STRUCTURE NUMBER
TXO A,FILNB ;SAY IS A NEW INDEX BLOCK
CALL ASROFN ;GET THE OFN
JRST FEFER2 ;FAILED, RELEASE ASSIGNED PAGES AND RETURN ERROR
MOVEM A,OFPTT ;SAVE THE OFN OF THE PTT
CALL UPDOFN ;UPDATE IT
MOVE C,FEFPAG ;GET # OF PAGES TO ALLOCATE
HRRM C,.FBBYV(P4) ;STORE FILE SIZE
CALL USTDIR ;DONE WITH THE FDB AND THE DIRECTORY
MOVE P4,FEFPAG ;GET # OF PAGES TO ALLOCATE
TXO P2,DSKAB ;SAY THIS IS A DISK ADDRESS
MOVE A,OFPTT ;GET OFN OF PTT
MOVEI B,0(Q3) ;PAGE TO HOLD IT
HRLI B,(PTRW) ;GET FULL ACCESS
CALL SETMPG ;GET THE PAGE
FEFSY8: SETZ A, ;1/FREE CHOICE OF PAGE
MOVE B,STRN13 ;2/STRUCTURE NUMBER
CALL DSKASN ;GET A DISK PAGE
JRST FEFER3 ;FAILED; RELEASE PAGES AND OFN, RETURN ERROR
TXO A,DSKAB ;SAY IS A DISK ADDRESS
MOVEM A,0(Q3) ;TO THE PTT
MOVX B,OFNWRB ;THE OFN WRITE BIT
MOVE C,OFPTT ;OFN OF PTT
IORM B,SPTH(C) ;SAY IT IS WRITTEN
MOVEI B,IMMCOD ;AND THAT THE POINTER IS IMMEDIATE
STOR B,PTRCOD,(Q3) ;""
AOS Q3 ;NEXT SLOT
TXO A,FILNB ;SAY IS A NEW INDEX BLOCK
MOVE B,STRN13 ;2/STRUCTURE NUMBER
CALL ASROFN ;GET AN OFN
JRST FEFER3 ;FAILED, RELEASE PAGES AND OFN; RETURN ERROR
MOVEM A,OFNPT ;SAVE IT
CALL UPDOFN ;INITIALIZE IT
MOVE A,OFNPT ;GET THE OFN
MOVEI B,0(P5) ;GET PAGE FOR THIS PT
HRLI B,(PTRW) ;FULL ACCESS
CALL SETMPG ;GET THE PAGE
MOVEI D,1000 ;SIZE OF A PT
CAIGE P4,1000 ;ROOM FOR ALL OF IT?
MOVEI D,0(P4) ;NO
SUBI P4,1000 ;NUMBER LEFT TO DO
MOVEI B,IMMCOD ;ALL POINTERS ARE IMMEDIATE
;..
;WRITE A PAGE TABLE
FEFSY9: MOVEM P2,0(P5) ;STORE SECTOR NUMBER
STOR B,PTRCOD,(P5) ;MAKE IT IMMEDIATE
ADD P2,SECPAG(Q2) ;GO TO NEXT PAGE
SOJLE D,FEFS11 ;MORE TO DO?
ADDI P5,1
JRST FEFSY9 ;OFF TO STORE THEM ALL
FEFS11: TRZ P5,777 ;RESOTRE PAGE ADDRESS
MOVEI B,0(P5)
MOVE A,OFNPT ;GET OFN OF PT
MOVX C,OFNWRB ;THE WRITE BIT
IORM C,SPTH(A) ;SAY THE XB IS WRITTEN
SETZ A, ;UNMAP THE PAGE
CALL SETMPG ;DO IT
MOVE A,OFNPT ;RESTORE OFN OF PT
CALL RELOFN ;FREE IT
JUMPG P4,FEFSY8 ;DO THEM ALL
;HERE THE FILE IS CREATED. NOW RELEASE ALL SPACE AND RETURN
TXZ Q3,777 ;ADDRESS OF PTT IN CORE
SETZ A, ;UNMAP THE PAGE
MOVEI B,0(Q3) ;TO DO THE UNMAP
CALL SETMPG ;DO IT
MOVE A,OFPTT ;OFN OF THE PTT
CALL RELOFN ;DO IT
MOVE A,Q3
CALL RELPAG ;RELEASE ALL JSB SPACE
MOVE A,P5
CALL RELPAG ;THIS ONE TOO
MOVE A,P3 ;THE JFN
RLJFN ;FREE THE JFN
JFCL
;...
MOVE A,STRN13 ;A/STRUCTURE NUMBER
CALL CPYBAK ;REMAKE BACKUP OF ROOT-DIRECTORY TO
; POINT TO FRONT END FILE SYSTEM
JRST [ MOVE A,STRN13 ;GET STRUCTURE NUMBER
HRRZ A,STRTAB(A) ;POINT TO ITS SDB
LOAD A,STRUC,(A) ;GET ITS UNIQUE CODE
BUG.(CHK,FEOCPB,DSKALC,SOFT,<FEFSYS - Failed to backup ROOT-DIRECTORY>,<<T1,STRCOD>>,<
Cause: A copy of the Root-Directory was not made due to one of the
following errors:
1. Not enough free space
2. Could not get JFN
3. Root-Directory or symbol table is bad
Action: Determine the cause (1, 2 or 3) and try to fix the problem.
Data: STRCOD - Structure unique code
>,,<DB%NND>) ;[7.1210]
JRST .+1]
RETSKP ;AND DONE
FEFER3: MOVE A,OFPTT ;GET OFN
CALL RELOFN ;RELEASE THE OFN
;FALL INTO FEFER2
FEFER2: MOVE A,P5 ;GET ADDRESS OF ASSIGNED PAGE
CALL RELPAG ;RELEASE THE PAGE
;FALL INTO FEFER1
FEFERR:
FEFER1: MOVE A,Q3 ;GET ADDRESS OF ASSIGNED PAGE
CALL RELPAG ;RELEASE THE PAGE
EA.ENT ;FIXUP FOR SECTION 1 RETURNS TO 0
FEFER0: RET
SUBTTL WRBOOT - Write FE boot block
;WRBOOT - WRITE FE BOOT BLOCK ON PACK WITH FE FILE SYSTEM.
;ACCEPTS: A/ UDB
;RETURNS +1 ALWAYS
WRBOOT: SAVEP ;PRESERVE REGS
MOVE P1,A ;SAVE UDB
CALL ASGPAG ;GET A WORK PAGE
RET ;DON'T DO IT THEN
MOVE P2,A ;SAVE PAGE ADDRESS
HRLI A,BOOTST ;MOVE FE BOOT BLOCK
BLT A,BOOTLN-1(P2) ;MOVE BOOT DATA
MOVE A,P2 ;THE ADDRESS AGAIN
CALL MLKMA ;LOCK IT DOWN
LSH A,PGSFT ;MAKE IT A CORE ADDRESS
MOVE P3,A ;SAVE IT
MOVE T3,P1 ;GET UDB
CALL FNDCH1 ;RETURN THE CKU NUMBERS NEEDED
MOVE D,T1 ;PUT INTO RIGHT AC
SETZ A, ;DO BLOCK 0
MOVE B,[1B0+DOP%WR+DOP%PS+HBLEN] ;WRITE ONE BLOCK
MOVE C,P3 ;THE PHYSICAL ADDRESS
CALL UDSKIO ;WRITE IT OUT
MOVE A,P3 ;THE PHYSICAL ADDRESS
LSH A,-PGSFT ;GET PAGE ADDRESS
CALL MULKCR ;UNLOCK IT
MOVE A,P2 ;THE WORK PAGE
CALLRET RELPAG ;GET RID OF IT
;THE BOOT DATA FOR THE FE
;THIS CODE IS POSITION INDEPENDENT AND IT CAN BE LOCATED ANYWHERE
;IN MEMORY (THAT IS THE CODE FROM BOOT11 DOWN.).
BOOTST:
BOOTBK:
BOOT11: 5,,12706 ;RESET,MOVE #1000,SP
1000,,10700 ;MOV PC,R0
62700,,36 ;ADD #BOTMSG-.,R0
112001,,1403 ;MOVB (R0)+,R1,BEQ 20$
4767,,4
773,,0 ;BR 10$,HALT
110137,,177566 ;MOVB R1,@#TPB
105737,,177564
100375,,207 ;BPL 10$,RET
BTMSG: 5015,,20012
20040,,25052
52052,,44510
20123,,47526
52514,,42515
42040,,42517
20123,,47516
20124,,47503
52116,,44501
20116,,20101
40510,,42122
40527,,42522
41040,,47517
40524,,46102
20105,,54523
52123,,46505
25040,,25052
5015,,12
BOOTLN==.-BOOTBK ;LENGTH OF THIS DATA BLOCK
SUBTTL FEWRTH/BOWRTH - Write the Home Blocks
;FEWRTH - SUBROUTINE TO WRITE THE HOME BLOCKS FOR THE FRONT END FILE
;BOWRTH - SUBROUTINE TO WRITE THE HOME BLOCKS FOR THE BOOTSTRAP FILE
;SYSTEM.
;ACCEPTS:
; A/ VIRTUAL ADDRESS OF WORK PAGE
; B/ ADDRESS OF SDBUDB FOR THE UNIT
; C/ SECTOR NUMBER OF START OF FRONT END FILE SYSTEM
; D/# OF PAGES IN FRONT END FILE SYSTEM
; CALL FEWRTH
; CALL BOWRTH
;RETURNS +1: FAILURE
; +2: SUCCESS
;THE CALLER HAS ESTABLISHED WHICH UNIT IS TO CONTAIN THE FRONT END OR BOOTSTRAP
;FILE SYSTEM. THIS ROUTINE WRITES INTO THAT PACK'S HOME BLOCKS THE
;STARTING SECTOR AND LENGTH OF THE FRONT END FILE SYSTEM.
BOWRTH: SAVEPQ ;SAVE WORK CELLS
SETZ Q2,0 ;SET BOOT FLAG
JRST FEWCOM ;GO TO COMMON PART
FEWRTH: SAVEPQ ;SAVE WORK CELLS
SETO Q2,0 ;SET FE FLAG
FEWCOM: SETZM P2 ;INITIALIZE ERROR REGISTER
MOVE Q3,A ;SAVE VIRTUAL ADDRESS OF WORK PAGE
MOVE P4,B ;SDBUDB ADDRESS
MOVE P1,C ;START SECTOR OF FRONT END FILE SYSTEM
MOVE P3,D ;# OF PAGES IN FRONT END FILE SYSTEM
CALL MLKMA ;LOCK IT DOWN FOR THE I/O
LSH A,PGSFT ;MAKE PHYSICAL ADDRESS
MOVE P5,A ;SAVE PHYSICAL ADDRESS OF WORK PAGE
CALL FNDCHN ;GET THE CKU VALUE (CHAN, CTRL, UNIT NUMBERS)
MOVEM A,Q1 ;SAVE IT
MOVE B,P5 ;PHYSICAL ADDRESS OF WORK PAGE
MOVEI C,HM1BLK ;HOME BLOCK SECTOR NUMBER
MOVE D,Q3 ;VIRTUAL ADDRESS OF WORK PAGE
CALL REDHOM ;READ THE HOME BLOCKS
JRST [ SETOM P2 ;NOTE FAILURE
JRST FWRT10 ] ;GO UNLOCK THE PAGE
;...
MOVE A,P1 ;SECTOR NUMBER OF START OF FEFS
TLO A,(1B4) ;EXISTANT BIT
SKIPN Q2 ;CHECK FOR BOOT FLAG
ADDI Q3,HOMFE2-HOMFE0 ;CHEAT A LITTLE HERE TO POINT TO BOOT AREA IN HOME BLOCK
DPB A,[POINT ^D16,HOMFE0(Q3),35] ;STORE IN FIRST HOME BLOCK
DPB A,[POINT ^D16,HOMFE0+HBLEN(Q3),35] ;STORE IN 2ND HOME BLOCK
LSH A,-^D16 ;GET UPPER 16 BITS
DPB A,[POINT ^D16,HOMFE0(Q3),17]
DPB A,[POINT ^D16,HOMFE0+HBLEN(Q3),17]
MOVE A,P3 ;GET NUMBER OF PAGES
MOVE B,STRTY1 ;GET ADDRESS OF SIZE DATA FOR THIS DISK TYPE
IMUL A,SECPAG(B) ;CONVERT PAGES TO SECTORS
DPB A,[POINT ^D16,HOMFE1(Q3),35]
DPB A,[POINT ^D16,HOMFE1+HBLEN(Q3),35]
LSH A,-^D16
DPB A,[POINT ^D16,HOMFE1(Q3),17]
DPB A,[POINT ^D16,HOMFE1+HBLEN(Q3),17]
MOVE A,P5 ;A/ PHYSICAL ADDRESS FOR WORK PAGE
MOVE B,Q1 ;B/ CKU NUMBERS
MOVE C,Q3 ;C/ VIRTUAL ADDRESS OF WORK PAGE
CALL UPDHOM ;WRITE BOTH HOME BLOCKS TO THE DISK
SETOM P2 ;NOTE OCCURRENCE OF ERROR
FWRT10: MOVE A,P5 ;GET CORE ADDRESS
LSH A,-PGSFT ;MAKE IT A CORE PAGE NUMBER
CALL MULKCR ;UNLOCK IT
SKIPE P2 ;ANY ERRORS FOUND ?
RET ;AND DONE
RETSKP ;NO, GIVE SUCCESS RETURN
SUBTTL FIXBOT/Fixfes - fix home blocks for special files
;FIXBOT/FIXFES - Fix Home Blocks for special files
;
;ROUTINE CALLED FROM FILINI AND MSTR TO PUT THE FRONT END FILE SYSTEM
;OR THE BOOTSTRAP.BIN FILE
;POINTERS INTO THE HOME BLOCK ON THE RELEVANT PACK. THIS IS
;CALLED WHENEVER THE MONITOR HAS BEEN REQUESTED TO REWRITE
;THE HOME BLOCKS, BUT NOT DO A FILE SYSTEM REFRESH.
;ACCEPTS:
; A/STRUCTURE NUMBER
;
;RETURNS +1: FAILURE
; +2: SUCCESS
FIXBOT::TDZA B,B ;SET BOOT FLAG
FIXFES::SETO B, ;SET FE FLAG
EA.ENT
TRVAR <STRTY1> ;ADDRESS OF SIZE DATA FOR THIS DISK TYPE
STKVAR <STRN14,SVPAGE,SVSIZE,SVDISK,SVPHYS,NAMBLK,TYPBLK>
MOVEM B,TYPBLK ;SAVE ENTRY FLAG
MOVEM A,STRN14 ;SAVE STRUCTURE NUMBER
MOVEI B,^D12 ;GET SOME FREE SPACE TO BUILD THE FILE
CALL ASGJFR ; SPEC IN (INCLUDING STRUCTURE NAME)
RET ;FAILED TO GET IT
MOVEM A,NAMBLK ;SAVE ADDRESS OF HEADER FOR STRING SPACE
HRROI A,1(A) ;T1/ADDRESS OF FREE SPACE (AFTER HEADER)
MOVE B,STRN14 ;T2/STRUCTURE NUMBER
HRROI C,[ASCIZ/<ROOT-DIRECTORY>FRONT-END-FILE-SYSTEM.BIN.1/]
SKIPN TYPBLK ;CHECK FOR BOOTSTRAP FILE
HRROI C,[ASCIZ/<ROOT-DIRECTORY>BOOTSTRAP.BIN.1/]
;C/ NAME OF FILE WITHOUT STRUCTURE
CALL STRST ;CREATE FILE SPEC INCLUDING THE STRUCTURE NAME
; IN FREE SPACE POINTED TO BY NAMBLK
JRST FIXFE2 ;FAILED. RELEASE SPACE AND RETURN
;...
MOVX A,GJ%OLD!GJ%SHT ;GTJFN ARGS
HRRO B,NAMBLK ;B/ADDRESS OF FILE NAME
ADDI B,1 ;POINT BEYOND HEADER
GTJFN ;GET A JFN FOR IT
JRST FIXFE2 ;FAILED. RELEASE SPACE AND RETURN
MOVEM A,SVPAGE ;STASH AWAY JFN
MOVEI A,JSBFRE ;A/RETURNING SPACE IN JSB
MOVE B,NAMBLK ;B/ADDRESS OF BLOCK
CALL RELFRE ;RETURN THE FREE SPACE
SETZM NAMBLK ;INITIALIZE ERROR FLAG
MOVE A,SVPAGE ;RESTORE JFN
IMULI A,MLJFN ;MAKE IT AN INTERNAL INDEX
CALL GETFDT ;GO FIND FILE'S FDB
JRST [ MOVE A,SVPAGE ;GET JFN BACK AGAIN
RLJFN ;RELEASE THE JFN
JFCL ;IGNORE FAILURE
RET ] ;GIVE FAIL RETURN
HRRZ B,.FBBYV(A) ;GET SIZE OF FILE
MOVEM B,SVSIZE ;SAVE IT
MOVE B,.FBADR(A) ;GET DISK ADDRESS
MOVEM B,SVDISK ;REMEMBER IT
CALL USTDIR ;DONE WITH THE DIRECTORY
MOVE A,SVPAGE ;THE JFN
RLJFN ;CLEAN IT UP
JFCL
CALL ASGPAG ;GO GET A PAGE
RET ;FAILED, GIVE FAIL RETURN
MOVEM A,SVPAGE ;REMEMBER IT
CALL MLKMA ;LOCK IT DOWN
LSH A,PGSFT ;MAKE IT A CORE ADDRESS
MOVEM A,SVPHYS ;REMEMBER IT
MOVE C,A
MOVE A,SVDISK ;THE ADDRESS
MOVEI B,1000 ;COUNT
MOVE D,STRN14 ;D/STRUCTURE NUMBER
CALL UDSKIO ;READ IN INDEX
SKIPE A ;GOT IT?
;...
FIXFE1: JRST [ MOVE A,SVPHYS ;NO, GET PHYS ADR
LSH A,-PGSFT ;CONVERT TO PAGE
CALL MULKCR ;UNLOCK PAGE
MOVE A,SVPAGE ;GET PAGE #
CALLRET RELPAG] ;RELEASE THE PAGE AND RETURN FAILURE
HRRZ A,SVPAGE ;GET ADDRESS OF FIRST INDEX BLOCK
MOVE A,0(A)
MOVEI B,1000
MOVE C,SVPHYS ;THE PHYSICAL ADDRESS
MOVE D,STRN14 ;D/STRUCTURE NUMBER
CALL UDSKIO
JUMPN A,FIXFE1 ;IF FAILED GO COMPLAIN
MOVE A,SVPAGE ;GET ADDRESS OF FIRST PAGE
MOVE A,0(A)
TLZ A,DSKMSK ;ONLY USE GOOD BITS
EXCH A,SVPHYS ;GET PHYSICAL ADDRESS
LSH A,-PGSFT ;MAKE IT A PAGE ADDRESS
CALL MULKCR ;FREE IT
MOVE B,STRN14 ;GET STRUCTURE NUMBER
HRRZ D,STRTAB(B) ;FIND START OF SDB'S
MOVE C,SDBTYP(D) ;POINT TO SIZE DATA FOR THIS DISK TYPE
MOVEM C,STRTY1 ;SAVE FOR FEWRTH
MOVE A,SVPHYS ;GET DISK ADDRESS
IDIV A,SECUNT(C) ;GET UNIT NUMBER
MOVEI B,SDBUDB(D) ;THE FIRST ONE
ADDI B,0(A) ;ADDRESS OF SDBUDB
MOVE A,SVPAGE ;THE WORK ADDRESS
MOVE C,SVPHYS ;FIRST SECTOR
MOVE D,SVSIZE ;# OF PAGES
SKIPN TYPBLK ;CHECK WHICH TO WRITE
JRST [ CALL BOWRTH ;WRITE BOOT
SETOM NAMBLK ;FAILED, NOTE ERROR
JRST .+3]
CALL FEWRTH ;GO FIX HOME BLOCK
SETOM NAMBLK ;FAILED, NOTE ERROR
MOVE A,SVPAGE ;THE PAGE
CALL RELPAG ;AND DONE
SKIPE NAMBLK ;ANY ERRORS ?
RET ;YES, RETURN FAILURE
RETSKP ;NO, RETURN SUCCESS
;GOT AN ERROR AFTER THE CALL TO ASGJFR AND BEFORE THE CALL TO RELFRE
;RELEASE THE SPACE
FIXFE2: MOVEI T1,JSBFRE ;T1/RETURNING SPACE IN THE JSB
MOVE T2,NAMBLK ;T2/START OF BLOCK
CALL RELFRE ;RELEASE THE SPACE WE GOT BEFORE
RET
SUBTTL GTFESZ/GTBTSZ - Get size of special file
;GTFESZ - GET THE SIZE OF THE FRONT END FILE SYSTEM
;GTBTSZ - GET THE SIZE OF THE BOOTSTRAP FILE
;ACCEPTS:
; T1/STRUCTURE NUMBER
; CALL GTFESZ
; CALL GTBTSZ
;RETURNS +1: INTERNAL ERROR
; +2: NO ERROR,
; T1/NUMBER OF PAGES (0 IS POSSIBLE)
;THIS ROUTINE IS CALLED WHEN THE FILE SYSTEM IS BEING REFRESHED AND THE
;HOME BLOCKS ARE NOT BEING REWRITTEN. IT OBTAINS THE SIZE OF THE FRONT END
;FILE SYSTEM FROM THE HOME BLOCKS OF THE UNIT THAT CONTAINS THE FILE.
;THIS NUMBER WILL BE PASSED TO FEFSYS, WHICH CREATES THE FILE
;<ROOT-DIRECTORY>FRONT-END-FILE-SYSTEM.BIN.
;SINCE FEFSYS LOOKS FOR A DUAL-PORTED DRIVE, AND SINCE THE PACK THAT
;PRESENTLY CONTAINS THE FILE MAY NOT BE DUAL-PORTED, THE WORDS IN THE
;HOME BLOCK THAT POINT TO THE FRONT END FILE SYSTEM ARE ZEROED BY THIS
;ROUTINE. FEFSYS WILL REWRITE THE HOME BLOCKS FOR THE UNIT THAT IT PICKS.
GTBTSZ::TDZA T2,T2 ;FLAG ENTRY TYPE
GTFESZ::SETO T2,0
EA.ENT
SAVEQ
STKVAR <GTFEST,GTFEVA,GTFEPA,GTFECU,GTTYPE>
MOVEM T2,GTTYPE ;SAVE ENTRY TYPE
MOVEM T1,GTFEST ;SAVE STRUCTURE NUMBER
NOINT ;NO INTERRUPTS WHILE FREE PAGE IS ASSIGNTED
CALL ASGPAG ;GET A PAGE TO READ HOME BLOCKS INTO
RETBAD(,<OKINT>) ;FAILED. NO SPACE AVAILABLE
MOVEM T1,GTFEVA ;SAVE VIRTUAL ADDRESS OF START OF PAGE
CALL MLKMA ;LOCK DOWN THE PAGE INTO CORE
LSH T1,PGSFT ;CONVERT PAGE NUMBER TO PHYSICAL ADDRESS
MOVEM T1,GTFEPA ;SAVE PHYSICAL ADDRESS OF WORK PAGE
MOVE T2,GTFEST ;GET STRUCTURE NUMBER
MOVE T2,STRTAB(T2) ;POINT TO SDB FOR THIS STRUCTURE
LOAD Q1,STRNUM,(T2) ;GET NUMBER OF UNITS IN THIS STRUCTURE
MOVNS Q1 ;GET NEGATIVE NUMBER
HRLZS Q1 ;SET UP AOBJN POINTER TO UNITS
HRRI Q1,SDBUDB(T2) ;Q1/(-COUNT,,SDBUDB ADDRESS)
;...
GTFES1: MOVE T3,0(Q1) ;GET ADDRESS OF UDB FOR THIS LOGICAL UNIT
CALL FNDCH1 ;GET THE CKU NUMBER FOR THE UNIT
MOVEM T1,GTFECU ;SAVE FOR LATER
MOVE T2,GTFEPA ;T2/PHYSICAL ADDRESS OF WORK PAGE
MOVEI T3,HM1BLK ;T3/SECTOR NUMBER OF FIRST HOME BLOCK
MOVE T4,GTFEVA ;T4/VIRTUAL ADDRESS OF WORK PAGE
CALL REDHOM ;READ THE FIRST HOME BLOCK
JRST GTFES2 ;DRIVE IS OFF-LINE. IGNORE IT
MOVE T3,GTFEVA ;POINT TO START OF WORK PAGE
SKIPN GTTYPE ;CHECK TYPE SO CORRECT WORD IS FOUND
ADDI T3,HOMFE2-HOMFE0
MOVE T2,HOMFE0(T3) ;GET NUMBER OF SECTORS IN FEFS
TXNE T2,1B2 ;DOES THIS PACK HAVE THE FRONT END FILE SYSTEM?
JRST GTFES3 ;YES. GO GET THE INFORMATION
GTFES2: AOBJN Q1,GTFES1 ;NO. GO TO NEXT UNIT
SETZ Q3, ;INDICATE NO FRONT END FILE SYSTEM IN STRUCTURE
JRST GTFES4 ;GO CLEAN UP AND EXIT
;THIS UNIT HAS THE FRONT END FILE SYSTEM. GET ITS SIZE IN SECTORS
;THEN CLEAR THIS FIELD IN THE HOME BLOCKS SO THAT FEFSYS CAN PUT THE
;FRONT END FILE SYSTEM IN WHATEVER PACK IT CHOOSES
GTFES3: LDB Q3,[POINT ^D16,HOMFE1(T3),17]
LSH Q3,^D16 ;SHIFT LEFT HALF LEFT 16 BITS
LDB T2,[POINT ^D16,HOMFE1(T3),35]
IORM T2,Q3 ;STORE RIGHT HALF IN RIGHT 16 BITS
SETZM HOMFE0(T3) ;CLEAR THE STARTING SECTOR IN THE FIRST HOME BLOCK
SETZM HOMFE0+HBLEN(T3) ;CLEAR IT IN THE SECOND HOME BLOCK
SETZM HOMFE1(T3) ;CLEAR THE COUNT IN THE FIRST HOME BLOCK
SETZM HOMFE1+HBLEN(T3) ;CLEAR IT IN THE SECOND HOME BLOCK
MOVE T1,GTFEPA ;T1/PHYSICAL ADDRESS OF PAGE CONTAINING HOME BLOCKS
MOVE T2,GTFECU ;T2/ CKU NUMBERS
CALL UPDHOM ;REWRITE THE HOME BLOCKS
JFCL ;IGNORE FAILURE
;...
;RELEASE THE PAGE AND EXIT
GTFES4: MOVE T1,GTFEPA ;GET PHYSICAL ADDRESS OF START OF PAGE
LSH T1,-PGSFT ;T1/PAGE NUMBER OF LOCKED PAGE
CALL MULKCR ;UNLOCK THE CORE PAGE
MOVE T1,GTFEVA ;T1/VIRTUAL ADDRESS OF WORK PAGE
CALL RELPAG ;RELEASE THE PAGE IN JSB FREE SPACE
OKINT ;ALLOW INTERRUPTS
MOVE T2,GTFEST ;GET STRUCTURE NUMBER
MOVE T2,STRTAB(T2) ;POINT TO SDB FOR THIS STRUCTURE
MOVE T2,SDBTYP(T2) ;POINT TO SIZE DATA FOR THIS TYPE OF DISK
MOVE T1,Q3 ;GET SIZE IN SECTORS
IDIV T1,SECPAG(T2) ;CONVERT TO NUMBER OF PAGES (FEWRTH MADE
; IT AN INTEGRAL NUMBER)
RETSKP ;TAKE SUCCESS RETURN
SUBTTL VERBAT - Verify the BAT blocks
;VERBAT - Verify the BAT blocks
;ACEPTS A/MASK RETURNED BY GETBAT
; B/CORE ADDRESS
; C/UDB POINTER
;
;RETURNS +1 NO GOOD BLOCKS
; +2 B POINTS TO A GOOD BAT BLOCK
VERBAT::SAVEP
MOVE P2,C ; SAVE DRIVE
MOVE P1,B ; SAVE ADDRESS
MOVE P3,A ; SAVE MASK
TLNN P3,(1B0) ; 1 OK?
JRST NO1 ; NO
TLNE P3,(1B1) ; 2 OK?
RETSKP ; ALL WELL
MOVEI A,HBLEN(P1) ;CORE ADDRESS
HRLI A,(P1) ; CORE ADDRESS OF PRIMARY
BLT A,<2*HBLEN-2>(P1) ;COPY TO THE SECONDARY
MOVEI A,BATBL1+HM2BLK-HM1BLK ;ADDRESS OF SECONDARY
MOVEM A,BATBLK+HBLEN(P1) ;STORE BLOCK NUMBER
RETSKP
NO1: TLNN P3,(1B1) ; 2 GOOD?
JRST [ MOVX A,US.BAT ;SAY NO BATS ON THIS GUY
IORM A,UDBSTS(P2) ;MARK BIT
BUG.(CHK,BADBAT,DSKALC,HARD,<BAT blocks unreadable>,,<
Cause: BAT block header contains bad information.
>,,<DB%NND>) ;[7.1210]
RET] ;AND GIVE UP
MOVEI A,(P1)
HRLI A,HBLEN(P1) ;TO THE SECONDARY
BLT A,<HBLEN-2>(P1) ;MOVE SECONDARY TO THE PRIMARY
MOVEI A,BATBL1 ;ADDRESS OF BAT BLOCK
MOVEM A,BATBLK(P1) ;STORE BLOCK NUMBER
RETSKP ;AND RETURN
SUBTTL BATQ - Mark a disk BAT for SYSERR
;BATQ - Mark a disk BAT for SYSERR
;
;BLOCK ON A "HARD" DISK ERROR. ACCEPTS:
; 1/ UDB POINTER
; 2/LOCAL LINEAR DISK ADDRESS
;
;RETURNS: +1 ALWAYS WITH BAT BLOCK UPDATED
BATQ:: SAVEP ;YES. SAVE SOME REGISTERS
NOINT ; NO INTS WHILST PAGE IS LOCKED
MOVEI P5,FPG3A ;ADDRESS OF BAT BLOCK
MOVE P4,A ;SAVE UDB INDEX
MOVE P3,B ;SAVE LOCAL DISK ADDRESS
MOVEI A,FPG3A ;USE ALTERNATE XB PAGE
CALL MLKMA ;LOCK IT DOWN
LSH A,PGSFT ;MAKE IT A CORE ADDRESS
MOVE P1,A ;SAVE IT
MOVEI A,0(P4) ;UDB POINTER
CALL LKBAT ;LOCK DOWN THE BAT BLOCK
JRST BATQE1 ;FAILED. MUST BE DONE THEN
MOVEI C,0(P4) ;UDB INDEX
CALL FNDCH1 ;GO GET CKU NUMBERS
MOVE P2,A ;SAVE THEM
MOVE B,P1 ;PHYSICAL CORE ADDRESS
MOVEI C,FPG3A ;VIRTUAL ADDRESS
CALL GETBAT ;GET THE BAT BLOCKS
MOVEI B,FPG3A ;VIRTUAL ADDRESS
MOVEI C,0(P4) ;UDB INDEX
CALL VERBAT ;GO VERIFY BAT BLOCKS
JRST BATQE ;ALL DONE
;HERE WHEN CORRECT BAT BLOCKS ARE IN FPG3A. P3=LOCAL DISK ADDRESS
;P4= UDB INDEX P1=PHYSCIAL CORE ADDRESS P2=CKU NUMBER
GOTDRV: MOVE A,P3 ;GET LOCAL ADDRESS
MOVEI B,FPG3A ;AND WHERE THE BAT BLOCK IS
MOVE C,P4 ;GET UDB ADDRESS
CALL SEEADR ;SEE IF IN THE PAGE YET
JRST GTDRV1 ;NO. MUST ADD IT THEN
MOVE P3,A ;SAVE DISK ADDRESS
MOVEI C,HBLEN(B) ;SET UP POINTER TO PAIR
JRST UPDBLK ;GO SET VALUES
;...
;MUST INSERT THE ADDRESS IN THE BAT BLOCK
GTDRV1: MOVE P3,A ;SAVE DISK ADDRESS
LOAD B,BTMCT,(P5) ;GET NUMBER OF PAIRS ADDED BY MONITOR
JUMPE B,ADDPR ;NONE. MUST ADD A PAIR THEN
MOVNI B,(B) ;GET NEG
LOAD C,BTHCT,(P5) ;GET PAIRS ADDED BY MAPPER
LSH C,1 ;MAKE IT A WORD COUNT
ADDI C,FPG3A+BAT1P ;GET START OF MONITOR PAIRS
HRLI C,0(B) ;FORM AOBJN WORD
DOPAIR: LOAD A,BATNB,(C) ;GET NUMBER OF BAD SPOTS IN THIS REGION
CAILE A,MAXBAD-4 ;ROOM FOR ANOTHER PAGE?
JRST NXTPR ;NO. GO ON
LOAD A,BADT,(C) ;GET TYPE OF THIS ENTRY
SKIPE A ;OLD OR NEW?
JRST [ LOAD A,ADD27,(C) ;NEW
JRST DOPA1] ;GO INLINE
LOAD A,ADD18,(C) ;OLD. GET SHORT ADDRESS
DOPA1: LOAD D,BATNB,(C) ;GET NUMBER
ADD D,A ;GET END ADDRESS
ADDI D,1 ;ONE MORE PLEASE
MOVE B,UDBSIZ(P4) ;GET PREVIOUS PAGE
SUB A,SECPAG(B) ;IN SECTORS PER PAGE
CAMN A,P3 ;IS THIS IMMEDIATELY PRECEEDING PAGE?
JRST [ STOR P3,ADD27,(C) ;MAKE THIS THW NEW START
MOVEI D,HBLEN(C) ;POINT TO THE SECONDARY
STOR P3,ADD27,(D) ;UPDATE THE SECONDARY
JRST CMNPAR] ;GO DO COMMON STUFF
CAME D,P3 ;AT THE END?
JRST NXTPR ;NO. GO TO NEXT PAIR
CMNPAR: LOAD B,BATNB,(C) ;GET COUNT
MOVE A,UDBSIZ(P4) ;NEW COUNT
ADD B,SECPAG(A) ;IN SECTORS PER PAGE
STOR B,BATNB,(C)
MOVEI D,1 ;JUTS IN CASE
STOR D,BADT,(C) ;MAKE IT A NEW TYPE
ADDI C,HBLEN ;POINT TO THE SECONDARY
STOR B,BATNB,(C) ;UPDATE THIS NODE COUNT
STOR D,BADT,(C) ;AND SET TYPE
JRST UPDBLK ;GO PUT IN COMMON STUFF
NXTPR: AOS C
AOBJN C,DOPAIR
; ..
; ..
;HERE IF MUST ADD A NEW PAIR
; TCO 4.2041 CALL BATSPC BEFORE BUMPING MONITOR-ADDED COUNT
; AND ADJUST ADDRESS CALCULATION SO LAST BAT ENTRY IS USED.
ADDPR: MOVEI A,0(P5) ;ADDRESS OF BAT BLOCK
CALL BATSPC ;CALCULATE SPACE LEFT FOR US
LOAD B,BTMCT,(P5) ;GET COUNT ADDED BY MONITOR
AOS B
STOR B,BTMCT,(P5) ;UPDATE THIS
STOR B,BTMC2,(P5) ;AND UPDATE THE SECONDARY
SKIPN A ;ANY PAIRS LEFT?
JRST RLSNOD ;NO. GO GIVE IT UP THEN
MOVEI C,MAXBFR(A) ;ROOM USED
ADDI C,BAT1P+FPG3A ;GET REAL ADDRESS OF PAIR(TCO 4.2041 ADJUSTMENT)
MOVE B,UDBSIZ(P4) ;SET NUMBER IN REGION
MOVE B,SECPAG(B) ;BASED ON SECPAG FOR DISK
SUBI B,1 ;ONE LESS IS FORMAT FOR NUMBER IN REGION
MOVEI A,1 ;FOR TYPE
STOR B,BATNB,(C)
STOR P3,ADD27,(C) ;STORE ADDRESS
STOR A,BADT,(C) ;STORE THE TYPE
ADDI C,HBLEN ;POINT TO SECONDARY
STOR B,BATNB,(C) ;INTO SECONDARY AS WELL
STOR P3,ADD27,(C)
STOR A,BADT,(C)
UPDBLK: MOVEI D,-HBLEN(C) ;POINT TO PRIMARY
MOVEI A,1 ;A BIT TO SHIFT
LOAD B,DOP%U2,P2 ;UNIT NUMBER OF THIS DRIVE
ANDI B,7 ;DRIVE UNITS GREATER THAN 8 DESTROYS THE
;TABLE. THIS IS TRUE FOR RP20'S AND HSC'S
LSH A,PUBCNT(B) ;POSITION THE BIT
IORM A,0(C) ;MERGE IT INTO THE BLOCK
IORM A,0(D) ;AND THE PRIMARY AS WELL
MOVE A,APRSER ;[7357] Get APR serial number
STOR A,APRNM,(C) ;AND STASH IT IN THE ENTRY
STOR A,APRNM,(D) ;AND IN THE PRIMARY AS WELL
MOVE A,UDBCDB(P4) ;GET ADDRESS OF CDB
MOVE A,CDBADR(A) ;GET MASSBUS CONTROLLER #
STOR A,BTKNM,(C) ;TO THE BAT BLOCK
STOR A,BTKNM,(D) ;AND THE OTHER AS WELL
;...
;NOW WRITE THE BAT BLOCK OUT
RLSNOD: MOVE A,P2 ;GET CHAN, CTRL, AND UNIT NUMBERS
MOVE B,P5 ;GET VIRTUAL ADDRESS
MOVE C,P1 ;AND PHYSICAL CORE ADDRESS
CALL BATOUT ;WRITE THEM
JFCL ;CAN'T DO MUCH ABOUT IT
BATQE: MOVE A,P1
LSH A,-PGSFT ;GET CORE PAGE NUMBER
CALL MULKCR ;RELEASE IT
MOVEI T1,0(P4) ;THE UDB INDEX
CALL ULKBAT ;FREE THE BAT BLOCKS
BATQE2: SKIPE ERRSWP ;WAS THERE A SWAP ERROR?
JRST [ ;YES THERE WAS, TAKE CARE OF IT
SOSN ERRSWP ;DEC THE COUNT, SKIP IF DONE
BUG.(HLT,SWPXXX,DSKALC,HARD,<Unrecoverable swap error for critical page>,,<
Cause: The monitor had a swap error for a PSB, PT, PTP, or UPT.
At the time of the error, a BUGCHK reported the problem,
and allowed the system to continue to record the error in
SYSERR, and rewrite the BATBLOCK.
Action: This has been known to happen on a drive that is beginning to have
hardware problems.
>)
JRST .+1] ;IF WE KEEP GOING, OK BY ME
OKINT ;AND ALLOW INTS NOW
RET
BATQE1: MOVE A,P1
LSH A,-PGSFT ;GET CORE PAGE NUMBER
CALL MULKCR ;RELEASE IT
JRST BATQE2
SUBTTL SWPASN - Assign the swapping blocks
;SWPASN - Assign the swapping blocks
;
;ACCEPTS:
; T1/STRUCTURE NUMBER
; CALL SWPASN
;RETURNS +1: FAILED TO ASSIGN ONE OR MORE SWAPPING PAGES
; +2: SUCCESS
SWPASN: SAVEQ
STKVAR <STRN15,STRTP,STRPTR,SWPAER>
SETZM SWPAER ;INITIALLY NO ERRORS
MOVEM T1,STRN15 ;SAVE STRUCTURE NUMBER
MOVE T1,STRTAB(T1) ;POINT TO SDB FOR THIS STRUCTURE
MOVEM T1,STRPTR ;SAVE POINTER
SKIPN SDBNSS(T1) ;ANY SWAPPING ON THIS STRUCTURE ?
RETSKP ;NO, RETURN
MOVE T2,SDBTYP(T1) ;POINT TO SIZE DATA FOR THIS DISK TYPE
MOVEM T2,STRTP ;SAVE POINTER
MOVN Q1,SDBNUM(T1) ;Q1/(-NO. PACKS IN STRUCTURE,,PACK NO.)
HRLZS Q1 ;FOR ALL PACKS
;LOOP THROUGH UNITS, ASSIGNING SWAPPING PAGES
SWPAS1: MOVE Q2,SECUNT(T2) ;GET # OF SECTORS PER UNIT
IMULI Q2,0(Q1) ;GET LOGICAL ADR OF START OF THIS PACK
ADD Q2,SDBFSS(T1) ;GET START OF SWAPPING SPACE ON UNIT
MOVE Q3,SDBNSS(T1) ;GET # OF SWAPPING SECTORS PER UNIT
ADD Q3,SECPAG(T2) ;MAKE SURE TO EVEN UP TO FULL PAGE
SUBI Q3,1
MOVE T1,Q3 ;GET # OF SECTORS FOR SWAPPING
IDIV T1,SECCYL(T2) ;GET # OF PAGES FOR SWAPPING
MOVE Q3,T1 ;COULD NOT DO A IDIV TO Q3
;FOR A UNIT, ASSIGN EACH SWAPPING PAGE
SWPAS2: MOVE T1,Q2 ;GET NEXT PAGE TO BE ASSIGNED
MOVE T2,STRN15 ;T2/STRUCTURE NUMBER
CALL CYLASA ;ASSIGN THE PAGE
SETOM SWPAER ;INDICATE FAILURE
MOVE T1,STRPTR ;RESTORE POINTER TO SDB FOR STRUCTURE
MOVE T2,STRTP ;RESTORE POINTER TO SIZE DATA
ADD Q2,SECCYL(T2) ;STEP TO THE NEXT PAGE
SOJG Q3,SWPAS2 ;LOOP BACK FOR ALL PAGES ON UNIT
AOBJN Q1,SWPAS1 ;LOOP BACK FOR ALL UNITS
SKIPE SWPAER ;WERE THERE ANY ERRORS?
RETBAD ;YES. TAKE FAILURE RETURN
RETSKP ;NO. TAKE SUCCESS RETURN
SUBTTL MNTPS - Start-up routine to mount the boot structure
;MNTPS - Start-up routine to mount the boot structure
;
;This is called is called after SETSPD has run so that in the future the
;CONFIG file might indicate how PS: should be mounted. For now, this routine
;tires to get it mounted exclusively first and failing that, shared. It is
;up to some other job to verify that PS: is mounted correctly.
;
; IFN CFSCOD,< ;Only for CFS monitors
MNTPS:: MOVEI T2,1 ;Try for exclusive first
MOVEI T1,PSNUM ;Number of BS:
CALL CFSSMT ;Do mount
IFSKP. ;If it made it
MOVEI T2,1 ;Say it was exclusive
ELSE.
MOVEI T1,PSNUM ;BS again
MOVEI T2,0 ;Try for "shared"
CALL CFSSMT ;Do it
BUG.(HLT,FSICFS,DSKALC,SOFT,<Could not register BS with CFS>,,<
Cause: Some other CFS system has this structure mounted exclusively
or as an alias and is preventing this system from mounting the
structure. This is usually an administrative problem.
Action: Find out which other system in the cluster has this system's BS:
mounted and then dismount it from that system or set the access to
shared. Note, it could be more than one system in the cluster so
make sure you check each system in the cluster. Since OPR may
indicate that the structure is dismounted (since the system is down),
STRTST (or some other tool) might have to be used to dismount the
structure or change the access.
>)
SETZM T2 ;Got it
ENDIF.
MOVE T1,STRTAB+PSNUM ;Get SDB for PS:
STOR T2,STEXL,(T1) ;Set mount tyep bit
RET ;And done
; > ;IFN CFSCOD
;VARIABLES USED BY FSIINI ROUTINE
CTYFIL==6 ;FILLER CHARACTERS NEEDED FOR CTY
;HOME BLOCK DEFINITIONS
CODHOM==:707070 ;HOME BLOCK SPECIAL CODE
HBLEN==:200 ;LENGTH OF HOME BLOCK
HM1BLK==:1 ;BLOCK # OF FIRST HOME BLOCK
PDBBLK==:3 ;ADDRESS OF PDB BLOCK
HM2BLK==:^D10 ;BLOCK # OF SECOND HOME BLOCK
HOMNAM==:0 ;SIXBIT /HOM/
HOMID==:1 ;SIXBIT /ID/
HOMPHY==:2 ;PHYSICAL ADR'S OF HOME BLOCKS
HOMSNM==:3 ;SIXBIT /STRUCTURE NAME/
HOMLUN==:4 ;XWD TOTAL PACKS, LOGICAL PACK #
HOMHOM==:5 ;BLOCK # OF HOME BLK,, BLK # OF OTHER HB
HOMP4S==:6 ;# OF PAGES FOR SWAPPING ON EACH UNIT
HOMFST==:7 ;FIRST SWAPPING TRACK ON EACH UNIT
HOMRXB==:10 ;ADR OF INDEX BLOCK OF ROOT DIRECTORY
HOMBXB==:11 ;INDEX BLOCK ADR OF BACKUP FILE
HOMFLG==:12 ;FLAGS
HOMSIZ==:13 ;SIZE OF A UNIT IN SECTORS (BLOCKS)
HOMBTB==:14 ;SIZE OF TOP HALF OF BIT TABLE (NUMBER OF TRACKS)
HOMMID==:15 ;MEDIA IDENTIFICATION (PACK UNIQUE CODE)
HOMDCF==:16 ;DON'T CARE DISK FLAG (FILE SYSTEM PROTECTION
;FOR FILE STRUCTURE IGNORED)
HOMBTF==:17 ;BOOT PARAMETER FLAGS - THIS OFFSET CANNOT BE
; CHANGED WITHOUT RECOMPILING BOOT
HOMFE0==:61 ;FE FILE SYSTEM WORD ONE (SECTOR #)
HOMFE1==:62 ;FE FILE SYSTEM WORD TWO (# OF SECTORS)
;HOME BLOCK LOCATIONS 61-100 ARE RESERVED FOR THE FRONT-END.
HOMFE2==:101 ;BOOTSTRAP.BIN WORD ONE (SECTOR #)
HOMFE3==:102 ;BOOTSTRAP.BIN WORD TWO (# OF SECTORS)
;[7.1112]
; The next four words must be kept in order. Words may be added as long as
; they are in order and start at HOMLS1. HOMLS1 can be shifted down to a
; lower offset.
HOMLS1==:160 ;Word 1 for Login Structure serial numbers
HOMLS2==:161 ;Word 2 for Login Structure serial numbers
HOMLS3==:162 ;Word 3 for Login Structure serial numbers
HOMLS4==:163 ;Word 4 for Login Structure serial numbers
HOMSER==:164 ;SERIAL NUMBER OF CPU WHICH IS BOOTED BY THIS
; STRUCTURE
HOMUID==:165 ;UNIT ID (3 WORDS)
HOMOID==:170 ;OWNER ID (3 WORDS)
HOMFSN==:173 ;FILE SYSTEM TYPE (3 WORDS)
HOMCOD==:176 ;0 ,, CODHOM
HOMSLF==:177 ;THIS HOME BLOCK #
;ROUTINE TO DO THE FIRST PHASE OF THE FILE SYSTEM INITIALIZATION
;FOR THE PUBLIC STRUCTURE (CALLED ONLY ON SYSTEM STARTUP)
;IF THE FILE SYSTEM IS BEING INITIALIZED (STARTED AT SYSLOD),
;THEN A DIALOGUE IS ENTERED TO REWRITE THE HOME BLOCKS ON THE
;PUBLIC STRUCTURE
;WHEN THE STRUCTURE IS DEFINED, OR IF NORMAL STARTUP IS DONE, THE
;SDB AND STRTAB ENTRY ARE CREATED FOR THE PUBLIC STRUCTURE. IT IS
;ASSUMED TO BE PS, BUT THE USER MAY SPECIFY AN ALTERNATIVE.
RESCD(INIT)
;DISC ADDRESS OF INDEX FILE
DIDSC0==:5740 ;ROOT-DIR XB IS IN A FIXED PLACE
DIDSC1==:13700 ;BACKUP ROOT-DIR XB IS ALSO FIXED
DIDSCI::DIDSC0+DSKAB
DIDSCJ::DIDSC1+DSKAB ;BACKUP OF ROOT-DIR IS IN FIXED PLACE
;RS DIDSCA,1
;THIS ROUTINE USES "STARTF" TO TELL IF FILE SYSTEM IS BEING INITIALIZED.
; 0 MEANS NOT REFRESHING (STARTED AT SYSGO1),
; MI%RFS MEANS REFRESHING (STARTED AT SYSLOD)
; CALL FSIINI
;RETURNS +1: ALWAYS
FSIINI::SAVEP
TRVAR <FSIPPA,FSINAM,FSICUR,FSILGS,FSIPPG,FSIDIC,FSICHN,FSICTL,FSIUNT,FSIUDB,FSIFLG,FSINPK,FSIUSZ,FSISWP,FSITYP,FSISER> ;[7.1112]
SETZM FSILGS ;[7.1112]Entry flag for CKHOMU
MOVEI T1,HOMPGA ;GET A PAGE LOCKED DOWN TO DO IO INTO
CALL MLKMA ;LOCK IT INTO PHYSICAL PAGE
MOVEM T1,FSIPPG ;SAVE PHYSICAL PAGE NUMBER
LSH T1,PGSFT ;GET PHYSICAL ADDRESS ALSO
MOVEM T1,FSIPPA ;SAVE PHYSICAL ADR OF IO PAGE
HRROI T1,CRLF ;[7.1230] Point to CRLF
CALL FSIPSO ;START AT THE BEGINNING OF A NEW LINE
FSIIN0: SKIPE STARTF ;IS THE FILE SYSTEM BEING INITIALIZED
CALL FSIDIA ;YES, DO THE INITIALIZATION DIALOGUE
CALL CHKHOM ;GO READ HOME BLOCKS AND CHECK THEM
JRST [SKIPN T1,LPSNAM ;NO PUBLIC STR FOUND, CHECK NAMES
MOVE T1,PSNAM ;LOGICAL PS NAME NOT SET UP, USE PS NAME
MOVEM T1,FSINAM
SETZM FSICUR ;CLEAR NAME OF CURRENT STR NAME
CALL CHKHOM ;GO READ HOME BLOCKS AND CHECK THEM
JRST FSIIN1 ;NO PUBLIC STRUCTURE FOUND, GO COMPLAIN
JRST .+1]
;..
HRROI T1,[ASCIZ/
[/]
CALL FSIPSO ;START WITH A NEW LINE
MOVE P1,STRTAB+PSNUM ;POINT TO SDB FOR PUBLIC STRUCTURE
MOVE P1,SDBNAM(P1) ;GET ITS NAME
MOVEM P1,FSINAM ;STORE FOR POSSIBLE LATER USE
MOVE T1,P1 ;PRINT ITS NAME
CALL FSI6TY
HRROI T1,[ASCIZ/ mounted/] ;SAY IT IS MOUNTED
CALL FSIPSO
FSIIN2: HRROI T1,[ASCIZ/]
/]
CALL FSIPSO ;END THE LINE
MOVEI T1,HOMPGA ;UNLOCK THE IO PAGE
CALL MULKMP ;...
SKIPE STARTF ;IF SYSTEM BEING INIT'ED,
JRST [ MOVEI T1,PSNUM ;T1/STRUCTURE 0 (PUBLIC STRUCTURE)
CALL FSIBAT ; INIT BAT BLOCKS FOR PS
JRST .+1]
MOVE T2,CTYLNO ;WAIT FOR MESSAGES TO FINISH
CALL STADYN ;POINT TO DYNAMIC DATA
BUG.(HLT,TTNAC5,DSKALC,HARD,<CTY not active at FSIINI>,,<
Cause: While mounting the public structure, the monitor found it
had no CTY on which to output information.
Action: Call Digital Field Service.
>)
CALL TTSOBE ;SEE IF OUTPUT BUFFER IS EMPTY
JRST .-1 ;LOOP UNTIL THEY ARE TYPED
RET ;ALL DONE
FSIIN1: HRROI T1,[ASCIZ/
Have the problems mentioned above been corrected yet? /]
HRROI T2,[ASCIZ/
[When all of the problems are corrected, type "Y". If structures
need defining, then follow the file system initialization procedure.]
/]
MOVEI T3,FSIYNO ;YES OR NO ANSWER WANTED
CALL FSIASK ;GO ASK QUESTION
JRST FSIIN1 ;ERROR, REPEAT QUESTION
JUMPE T1,FSIIN1 ;IF NO, REPEAT QUESTON UNTIL YES
JRST FSIIN0 ;START OVER AGAIN
SUBTTL CHKHOM - Read all Home Blocks and check their consistency
;CHKHOM - Read all Home Blocks and check their consistency
;
;THIS ROUTINE BUILDS STRTAB AND THE SDB'S FOR EACH STRUCTURE
; CALL CHKHOM
;RETURNS +1: SOMETHING IS AMISS - A MESSAGE WAS TYPED ALREADY
; +2: STRTAB AND SDB'S ARE SET UP
;USE OF NON-TEMPORARY REGISTERS:
; P1/ CURRENT CDB
; P2/ CURRENT KDB IF ANY
; P3/ CURRENT UDB
; P4/ AOBJN POINTER OVER ALL CHANNELS
CHKHOM: SAVEPQ ;SAVE PERMANENT ACS
STKVAR <CHKHOE>
CHKH20: SETOM CHKHOE ;INITIALIZE ERROR WORD TO "TRUE"
MOVSI T1,-STRN ;INITIALIZE THE STRTAB TO ZERO
CALL REMSTR ;[7289]CLEAN UP STRTAB AND UDB'S
AOBJN T1,.-1 ;...
MOVN P4,MAXCHN ;SET UP TO READ EVERY HOME BLOCK
HRLZS P4 ;GET AOBJN COUNTER OF CHANNELS
CHKHO1: SKIPN P1,CHNTAB(P4) ;THIS CHANNEL EXIST?
JRST CHKHO2 ;NO, TRY NEXT ONE
CALL DGUMAP ;YES, LOOP OVER ALL UNITS ON THIS CHANNEL
CALL CKHOMU ;EXAMINE EACH UNIT ON THE CHANNEL
CHKHO2: AOBJN P4,CHKHO1 ;LOOP OVER ALL CHANNELS
;LOOP THROUGH STRUCTURES CHECKING FOR CONSISTENCY AND COMPLETENESS
MOVSI P1,-STRN ;SET UP TO LOOK AT STRTAB
CHKHO5: SKIPN P2,STRTAB(P1) ;IS THIS STR DEFINED?
JRST CHKHO7 ;NO, SKIP IT
MOVEI T1,540000 ;MAKE INTO 5B2+40000+STR NUMBER
STOR T1,STRUC,(P2) ;STORE UNIQUE CODE IN STRUCTURE DATA BLOCK
HRRZ T1,P1 ;GET STRUCTURE NUMBER
STOR T1,STRUS,(P2) ;PUT THE STR NUMBER INTO STRUC
MOVE T1,SDBSTS(P2) ;GET FLAGS
TXNE T1,HB%HBM ;IS THERE ANY INCONSISTENCY IN HOME B'S
JRST CHKH16 ;YES, GO COMPLAIN
TXNE T1,MS%MXB ;IS BIT TABLE TOO BIG?
JRST CHKH40 ;YES. GO COMPLAIN
MOVN P3,SDBNUM(P2) ;GET NUMBER OF PACKS IN THIS STR
HRLZS P3 ;SET UP AOBJN COUNTER
HRR P3,P2 ;GET ADR OF SDB
;...
;LOOP THROUGH LOGICAL UNITS
CHKHO6: SKIPN T1,SDBUDB(P3) ;IS THERE A UNIT?
JRST CHKH11 ;NO, MISSING UNIT
TXNE T1,HB%MUN ;MULTIPLE UNIT?
JRST CHKH12 ;YES, GO COMPLAIN
TXNE T1,HB%WLK ;WRITE LOCKED?
JRST CHKH17 ;YES
;STORE INTO UDBSTR (UNIT WITHIN STRUCTURE,,STRUCTURE NUMBER)
MOVEM P1,UDBSTR(T1) ;STORE STRUCTURE NUMBER IN RH
MOVEI T2,0(P3) ;ADDRESS OF SDB FOR THIS STRUCTURE PLUS UNIT NO.
SUBI T2,0(P2) ;MINUS ADDRESS OF SDB FOR THIS STRUCTURE
HRLM T2,UDBSTR(T1) ;STORE UNIT NUMBER IN LH
TXNN T1,HB%1OK ;GOOD PRIMARY HOME BLOCK?
JRST CHKH13 ;NO
TXNN T1,HB%2OK ;GOOD BACKUP HOME BLOCK?
JRST CHKH14 ;NO
CHKH6A: AOBJN P3,CHKHO6 ;CHECK OTHER UNITS IN STR
CHKHO7: AOBJN P1,CHKHO5 ;LOOP FOR ALL STR'S
;ALL PACKS HAVE BEEN READ. IF THE SPECIFIED STRUCTURE WAS FOUND, THERE
;IS AN SDB FOR IT. IT MUST HAVE SWAPPING SPACE
SKIPE T1, STRTAB+PSNUM ;HAVE WE FOUND THE PUBLIC STRUCTURE?
JRST CHKH10 ;YES.
SKIPE FSINAM ;HAVE WE TRIED PS: YET?
JRST CHKHO9 ;YES
SKIPN T1,LPSNAM ;IS THERE A LOGICAL PS NAME?
MOVE T1,PSNAM ;NO, THE DEFAULT NAME IS PS
MOVEM T1,FSINAM ;STORE FOR NEXT LOOK
SETZM FSICUR ;ZERO ANY CURRENT STR LOOKING AT
JRST CHKH20 ;AND GO LOOK AGAIN
;...
CHKHO9: HRROI T1,[ASCIZ/ System structure not found. What is its name? /]
HRROI T2,[ASCIZ/
[Type the name of a structure that is on-line and has swapping space]
/]
MOVEI T3,FSIDEV ;GET A SIXBIT DEVICE NAME
CALL FSIASK ;GET THE NAME OF THE PUBLIC STRUCTURE
JRST CHKHO9 ;FAILED. TRY AGAIN
JUMPE T1,CHKHO9 ;GAVE NO NAME. TRY AGAIN
MOVEM T1,FSINAM ;SAVE THE NAME AND GO TRY TO FIND
JRST CHKH20 ; THIS STRUCTURE
;A STRUCTURE IS DEFINED. SEE IF IT HAS SWAPPING SPACE
CHKH10: SKIPE T2,SDBNSS(T1) ;# OF SWAPPING SECTORS
JRST CHKH30 ;HAS SWAPPING. THIS IS THE PUBLIC STRUCTURE
CHKH21: MOVE T1,FSICUR ;[7289]GET NAME OF THIS STRUCTURE
CALL FSI6TY
HRROI T1,[ASCIZ/: Does not have swapping space.
/] ;[7289]
CALL FSIPSO ;[7289]TELL OPERATOR ABOUT PROBLEM
HRROI T1,[ASCIZ/ What is the name of the system structure? /] ;[7289]
HRROI T2,[ASCIZ/
[Type the name of a structure that is on-line and has swapping space]
/]
MOVEI T3,FSISIX ;GET A SIXBIT NAME
CALL FSIASK ;GET THE NAME OF THE PUBLIC STRUCTURE
JRST CHKH21 ;FAILED. TRY AGAIN
JUMPE T1,CHKH21 ;GAVE NO NAME. TRY AGAIN
MOVEM T1,FSINAM ;SAVE THE NAME
SETZM FSICUR ;[7289]PREPARE TO LOOK AGAIN FOR PS
JRST CHKH20 ;GO TRY TO FIND THIS STRUCTURE
;THIS STRUCTURE IS OK. MAKE IT THE PUBLIC STRUCTURE
CHKH30: MOVEM T2,NSSUN ; IN THE PUBLIC STRUCTURE
MOVE T2,SDBFSS(T1) ;FIRST SWAPPING SECTOR
MOVEM T2,FSSUN ; IN THE PUBLIC STRUCTURE
MOVX T2,MS%DOM!MS%DMP ;[7.1081] This is a domestic dumpable structure
IORM T2,SDBSTS(T1)
SKIPN CHKHOE ;WAS THERE AN ERROR DURING CHKHOM?
RET ;YES
RETSKP ;NO
SUBTTL CHKHOM error conditions -- CHKH11 - Errors in single unit
;CHKH11 - CHKHOM Error conditions
;ERRORS IN A SINGLE UNIT
;MISSING UNIT IN STRUCTURE. MARK THIS AS A FATAL ERROR
;BUT LOOK AT THE REMAINING UNITS
CHKH11: HRROI T1,[ASCIZ/? Logical unit /]
CALL FSIPSO
HRRZ T1,P3 ;GET UNIT NUMBER
SUBI T1,0(P2) ;SUBTRACT OFF THE SDB ADR
CALL FSIDTY ;TYPE OUT UNIT NUMBER
HRROI T1,[ASCIZ/ missing from structure /]
HRROI P4,[ASCIZ/.
/]
JRST CHKH15 ;GO TYPE STR NAME
;MULTIPLE UNITS IN STRUCTURE. MARK THIS AS A FATAL ERROR
;BUT LOOK AT THE REMAINING UNITS
CHKH12: HRROI T1,[ASCIZ/? More than one logical unit /]
CALL FSIPSO
HRRZ T1,P3 ;GET UNIT NUMBER
SUBI T1,0(P2) ;SUBTRACT OFF THE SDB ADR
CALL FSIDTY
HRROI T1,[ASCIZ/ in structure /]
HRROI P4,[ASCIZ/.
/]
JRST CHKH15
;WRITE LOCKED UNIT. MARK THIS AS A FATAL ERROR
;BUT LOOK AT THE REMAINING UNITS
CHKH17: HRROI T1,[ASCIZ/? Logical unit /]
CALL FSIPSO
MOVEI T1,0(P3) ;GET UNIT NUMBER
SUBI T1,0(P2) ;SUBTRACT OFF THE SDB ADR
CALL FSIDTY ;TYPE OUT UNIT NUMBER
HRROI T1,[ASCIZ/ of structure /]
HRROI P4,[ASCIZ/ is write locked.
/]
JRST CHKH15
;...
CHKH15: CALL FSIPSO
MOVE T1,SDBNAM(P2) ;GET STR NAME
CALL FSI6TY ;TYPE OUT STR NAME
MOVE T1,P4
CALL FSIPSO
SETZM CHKHOE ;INDICATE FATAL ERROR
JRST CHKH6A ;GO ON TO NEXT UNIT IN STRUCTURE
;PROBLEM WITH ONE HOME BLOCK. PRINT A WARNING BUT DON'T
;INDICATE A FATAL ERROR
CHKH13: SKIPA T1,[-1,,[ASCIZ/% Primary Home Block on "/]]
CHKH14: HRROI T1,[ASCIZ/% Backup Home Block on "/]
CALL FSIPSO ;TYPE OUT START OF MESSAGE
MOVE T1,SDBNAM(P2) ;GET STR NAME
CALL FSI6TY ;TYPE IT OUT
HRROI T1,[ASCIZ/" Logical Unit /]
CALL FSIPSO ;...
MOVEI T1,0(P3) ;GET LOGICAL UNIT NUMBER
SUBI T1,0(P2) ;SUBTRACT OFF THE SDB ADR
CALL FSIDTY ;ADD IT TO MESSAGE
HRROI T1,[ASCIZ/ is incorrect.
/]
CALL FSIPSO ;END MESSAGE
JRST CHKH6A ;LOOP BACK FOR ALL UNITS
SUBTTL CHKHOM error conditions -- CHKH40 - Problems with a structure
;CHKH40 - CHKHOM error conditions
;
;PROBLEMS RELATED TO A STRUCTURE
;BIT TABLE FILE IS TOO BIG FOR MONITOR'S ADDRESS SPACE
CHKH40: HRROI T1,[ASCIZ/? Bit table is too large in structure /]
JRST CHKH42
;HOME BLOCK INCONSISTENCY. MARK THIS AS A FATAL ERROR
;AND PROCEED TO THE NEXT STRUCTURE
CHKH16: HRROI T1,[ASCIZ/? Inconsistent set of packs composing structure /]
CHKH42: CALL FSIPSO
MOVE T1,SDBNAM(P2) ;GET STR NAME
CALL FSI6TY ;TYPE OUT STR NAME
HRROI T1,[ASCIZ/.
/]
CALL FSIPSO ;END MESSAGE
SETZM CHKHOE ;MARK THAT A FATAL ERROR HAPPENED
JRST CHKHO7 ;GO BACK AND LOOK AT OTHER STR'S
SUBTTL FNDLGS - Find and mount a Login Structure
;[7.1112]
; FNDLGS::
;
; This routine is called by MEXEC at system startup to find and mount a
; Login Structure. This is done by calling routine CKHOMU for each
; available disk unit. CKHOMU will build the SDB for the unit if it is part
; of the Login Structure.
; Call:
; CALL FNDLGS
; Returns:
; +1: Always, with LGSIDX containing the STRTAB offset of the
; Login Structure.
;
SWAPCD
FNDLGS::SAVEQ
TRVAR <FSIPPA,FSINAM,FSICUR,FSILGS>
STKVAR <<LGSNAM,2>>
MOVEI T1,^D10000 ;[7.1276] Wait for 10 seconds
DISMS% ;[7.1276] for MSCP activity to settle down
MOVEI T1,HOMPGA ;Page to use for physical I/O
CALL MLKMA ;(T1/T1)Lock it into physical page
LSH T1,PGSFT ;Get physical address also
MOVEM T1,FSIPPA ;Save physical address of I/O page
SETOM FSILGS ;Entry flag for CKHOMU
SETZM FSINAM ;Don't look for a structure name
SETZM FSICUR ;Reset the CKHOMU routine
SETZM LGSIDX ;Login structure is boot, for now
MOVN P4,MAXCHN ;Set up to read every Home Block
HRLZS P4 ;Get AOBJN counter of channels
FNDLG1: SKIPN P1,CHNTAB(P4) ;This channel exist?
JRST FNDLG2 ;No, try next one
CALL DGUMAP ;(P1/)Yes, loop over all units on this channel
CALL CKHOMU ;(P1,P2,P3/)Examine each unit on the channel
FNDLG2: AOBJN P4,FNDLG1 ;Loop over all channels
MOVEI T1,HOMPGA ;Number of I/O page
CALL MULKMP ;(T1/)Unlock the I/O page
;...
MOVEI Q2,1 ;Get the Login Structure number in Q2
SKIPE Q1,STRTAB(Q2) ;[8868] Did we find a reasonable Login Str?
IFSKP. ;[8868] Nope
BUG.(INF,LGSMIS,DSKALC,SOFT,<FNDLGS - Login Structure missing>,,<
Cause: Routine FNDLGS was called to mount a Login Structure as enabled in
the system configuration file. However no Login Structure was found.
The system will continue startup without the Login Structure.
Action: Examine the disk configuration to find out why the Login Structure
is not available.
>) ;[8868] Let us know it wasn't found
RET ;[8868] Return anyway
ENDIF. ;[8868] Login structure found, Q2/STRTAB entry
MOVE T1,SDBSTS(Q1) ;Get the structure flags
TXNE T1,HB%HBM ;Home Block mismatch?
JRST FNDHBM ;Yes. Go handle it
TXNE T1,MS%MXB ;Is the bit table to large?
JRST FNDMXB ;Yes. Go handle it
MOVN T4,SDBNUM(Q1) ;Get the number of units in the structure
HRLS T4 ;Make AOBJN pointer
HRR T4,Q1 ;SDB address
FNDLG3: SKIPN T2,SDBUDB(Q1) ;Get UDB address
JRST FNDMSU ;Should be there. Error
TXNE T2,HB%MUN ;Multiple units found?
JRST FNDMUN ;Yes. Error
TXNE T2,HB%WLK ;Is the unit write-locked?
JRST FNDWLK ;Yes. Error
AOBJN T4,FNDLG3 ;Loop over all units in structure
MOVSI T4,-MXSTRU ;Get maximum table length
MOVEI T3,SDBUDB(Q1) ;Get address of start of table
FNDLG4: SKIPN T2,(T3) ;Get UDB address
JRST FNDLG5 ;Done if zero
HRRZM Q2,UDBSTR(T2) ;Store away structure number
HRLM T4,UDBSTR(T2) ;Store away unit in structure
AOS T3 ;Point to next UDB
AOBJN T4,FNDLG4 ;Loop over all UDBs
FNDLG5: MOVE T1,Q2 ;Get structure number
CALL MNTLGS ;(T1/)Register the mount with CFS
CALLRET LGSERR ;(T1,Q1/)Could not do it
HRRZ T1,Q2 ;Get structure number
TRO T1,540000 ;Make 5B2+40000+number for unique code
STOR T1,STRUC,(Q1) ;Save in SDB
MOVX T1,MS%DOM ;Get "Domestic" bit
IORM T1,SDBSTS(Q1) ;Turn it on in SDB
;...
;
; Here to do all the things to make the structure really mounted, like
; verifying root-directory and index table
;
CALL LCKDVL ;()Lock device lock tables
MOVE T1,Q2 ;Get structure number
HRRZ T2,Q1 ;Get SDB address
CALL INISTR ;(T1/T2)Init device tables
MOVE T1,Q2 ;Get structure number
CALL SETRDO ;(T1/)Set up OFN for root-directory
JRST FNDNRD ;Can't get it, lose the structure
MOVE T1,Q2 ;Get the structure number
CALL MNTBTB ;(T1/)Mount the bit table
JRST FNDNBT ;Can't do it. Abort
MOVE T1,Q2 ;Get the structure number
CALL FNDIDX ;(T1/)Get an OFN on the index table
JRST FNDNIT ;Can't. Abort mount
LOAD T1,STRUC,(Q1) ;Get the structure unique code
HRLZS T1 ; into the left half
HRRI T1,ROOTDN ;And the directory number in the RH
CALL SETDIR ;(T1/)Map in the root-directory
JRST FNDCMR ;Can't. Abort mount
CALL BLKSCN ;()Check out the root-directory
JRST FNDBRD ;Directory is bogus
CALL USTDIR ;Directory is good. Unlock it
MOVE T1,Q2 ;Get structure number
SETZ T2, ;No flags
CALL CHKBT ;(T1,T2/T1,T2,T3)Check the bittable
JRST FNDBBT ;No good. Abort mount
MOVE T1,Q2 ;Get structure number
CALL CHKBAK ;(T1/)Check and fix backup root directory
JRST FNDCCB ;Can't. Abort mount
MOVE T1,Q2 ;Get structure number
CALL FRESTR ;(T1/)Make the structure usable
UNLOKK DEVLKK ;Unlock the device tables
;...
MOVSI T1,-6 ;Maximum string length is 6 chars
MOVE T2,[POINT 7,LGSNAM] ;Byte pointer to STKVAR
MOVE T3,[POINT 6,SDBNAM(Q1)] ;Pointer to structure name
FNDLG6: ILDB T4,T3 ;Get a sixbit byte
JUMPE T4,FNDLG7 ;Done
ADDI T4,40 ;Make it ASCII
IDPB T4,T2 ;Stick in ASCIZ string
AOBJN T1,FNDLG6 ;Do entire string
FNDLG7: MOVEI T4,":" ;Get a colon
IDPB T4,T2 ;End with a colon
SETZ T4, ;Load a null byte
IDPB T4,T2 ;Finish off string with a null
MOVEI T1,.CLNSY ;Make a system wide logical
HRROI T2,[ASCIZ/PS/] ;Logical name to define
HRROI T3,LGSNAM ;Defintion string
MOVE T4,SDBNAM(Q1) ;Get structure name in case CRLNM fails
CRLNM% ;Redefine "PS:"
BUG.(HLT,LGSNPS,DSKALC,SOFT,<FNDLGS - Failed to redefine "PS:" logical name>,<<T4,STRNAM>>,<
Cause: Routine FNDLGS was attempting to define logical name "PS:" to point
to the physical name of the Login Structure that was just mounted.
This BUGHLT indicates that for some reason, this failed. This
definition must be made in order for the system to run properly
with the Login Structure mounted.
Action: Examine the dump and determine why the CRLNM% JSYS failed.
Data: STRNAM - Sixbit Structure Name
>)
LOAD T1,STRUC,(Q1) ;Get structure number
STOR T1,JSUC ;Save as connected structure of job 0
HRROI T1,[ASCIZ/
[Structure /] ;[7.1230] Pointer to string
CALL FSIPSO ;(T1/)Display it on CTY
MOVE T1,SDBNAM(Q1) ;Get name of structure
CALL FSI6TY ;(T1/)Type out name
HRROI T1,[ASCIZ/: mounted as the login structure]
/] ;[7.1230] Rest of message
CALL FSIPSO ;(T1)Display it
MOVEM Q2,LGSIDX ;Save STRTAB index of Login Structure
RET ;Done
;
; Here if the mounting procedure failed because we couldn't get an OFN
; for the root-directory.
;
FNDNRD: MOVE T1,SDBNAM(Q1) ;Get the sixbit structure name
BUG.(CHK,LGSNRD,DSKALC,SOFT,<FNDLGS - Couldn't get OFN for the Root-Directory on the Login Structure>,<<T1,STRNAM>>,<
Cause: Routine FNDLGS was attempting to mount the Login Structure,
but it could not get an OFN for the root-directory.
Action: Examine the structure and repair the problem. Then re-boot the
system.
The Login Structure has not been mounted. The boot structure is
used as PS:.
Data: STRNAM - Sixbit Structure Name
>,,<DB%NND>) ;[7.1210]
JRST FNDER1 ;Go clean up
;
; Here if the mounting procedure failed because we couldn't get an OFN
; for bit table
;
FNDNBT: MOVE T1,SDBNAM(Q1) ;Get the sixbit structure name
BUG.(CHK,LGSNBT,DSKALC,SOFT,<FNDLGS - Couldn't get OFN for the bit table on Login Structure>,<<T1,STRNAM>>,<
Cause: Routine FNDLGS was attempting to mount the Login Structure,
but it could not get an OFN for the bit table.
Action: Examine the structure and repair the problem. Then re-boot the
system.
The Login Structure has not been mounted. The boot structure is
used as PS:.
Data: STRNAM - Sixbit Structure Name
>,,<DB%NND>) ;[7.1210]
JRST FNDER2 ;Go clean up
;
; Here if the mounting procedure failed because we couldn't get an OFN
; for the INDEX-TABLE.BIN file.
;
FNDNIT: MOVE T1,SDBNAM(Q1) ;Get the sixbit structure name
BUG.(CHK,LGSNIT,DSKALC,SOFT,<FNDLGS - Couldn't get OFN for INDEX-TABLE.BIN on Login Structure>,<<T1,STRNAM>>,<
Cause: Routine FNDLGS was attempting to mount the Login Structure,
but it could not get an OFN for the INDEX-TABLE.BIN file.
Action: Examine the structure and repair the problem. Then re-boot the
system.
The Login Structure has not been mounted. The boot structure is
used as PS:.
Data: STRNAM - Sixbit Structure Name
>,,<DB%NND>) ;[7.1210]
JRST FNDER3 ;Go clean up
;
; Here if the mounting procedure failed because we couldn't map in the
; root-directory.
;
FNDCMR: MOVE T1,SDBNAM(Q1) ;Get the sixbit structure name
BUG.(CHK,LGSCMR,DSKALC,SOFT,<FNDLGS - Couldn't map in the Root-Directory for Login Structure>,<<T1,STRNAM>>,<
Cause: Routine FNDLGS was attempting to mount the Login Structure,
but it could not map in the root directory.
Action: Examine the structure and repair the problem. Then re-boot the
system.
The Login Structure has not been mounted. The boot structure is
used as PS:.
Data: STRNAM - Sixbit Structure Name
>,,<DB%NND>) ;[7.1210]
JRST FNDER4 ;Go clean up
;
; Here if the mounting procedure failed because the root directory was
; damaged.
;
FNDBRD: MOVE T1,SDBNAM(Q1) ;Get the sixbit structure name
BUG.(CHK,LGSBRD,DSKALC,SOFT,<FNDLGS - Root-Directory is no good on Login Structure>,<<T1,STRNAM>>,<
Cause: Routine FNDLGS was attempting to mount the Login Structure,
but the Root Directory was found to be damaged.
Action: Examine the structure and repair the problem. Then re-boot the
system.
The Login Structure has not been mounted. The boot structure is
used as PS:.
Data: STRNAM - Sixbit Structure Name
>,,<DB%NND>) ;[7.1210]
JRST FNDER5 ;Go clean up
;
; Here if the mounting procedure failed because the bit table is no
; good.
;
FNDBBT: MOVE T1,SDBNAM(Q1) ;Get the sixbit structure name
BUG.(CHK,LGSBBT,DSKALC,SOFT,<FNDLGS - Bit table is no good on Login Structure>,<<T1,STRNAM>>,<
Cause: Routine FNDLGS was attempting to mount the Login Structure,
but the bit table was found to be damaged.
Action: Examine the structure and repair the problem. Then re-boot the
system.
The Login Structure has not been mounted. The boot structure is
used as PS:.
Data: STRNAM - Sixbit Structure Name
>,,<DB%NND>) ;[7.1210]
JRST FNDER4 ;Go clean up
;
; Here if the mounting procedure failed because we could not create a
; backup copy of the root directory.
;
FNDCCB: MOVE T1,SDBNAM(Q1) ;Get the sixbit structure name
BUG.(CHK,LGSCCB,DSKALC,SOFT,<FNDLGS - Couldn't create a backup Root-Directory for Login Structure>,<<T1,STRNAM>>,<
Cause: Routine FNDLGS was attempting to mount the Login Structure,
but the backup copy of the Root Directory is bad and an
attempt to create a new copy failed.
Action: Examine the structure and repair the problem. Then re-boot the
system.
The Login Structure has not been mounted. The boot structure is
used as PS:.
Data: STRNAM - Sixbit Structure Name
>,,<DB%NND>) ;[7.1210]
JRST FNDER4 ;Go clean up
; Here on error conditions when verifying the structure. Clean up the OFNs,
; device tables and structure information.
;
FNDER5: CALL USTDIR ;()Unmap currently mapped directory
FNDER4: LOAD T1,STRIDX,(Q1) ;Get OFN of index table file
SKIPE T1 ;Is there one?
CALL RELOFN ;Release the root-directory OFN
FNDER3: LOAD T1,STRBTB,(Q1) ;Get OFN of bit table file
SKIPE T1 ;Is there one?
CALL RELOFN ;(T1/T2,T2)Release it
FNDER2: LOAD T1,STRRDO,(Q1) ;Get OFN of root-directory
SKIPE T1 ;Is the one?
CALL RELOFN ;(T1/T1,T2)Release the root-directory OFN
FNDER1: MOVE T1,Q2 ;Get the structure number
CALL DEVSTR ;(T1/)Clean up the DEV tables
UNLOKK DEVLKK ;Unlock the device table lock
MOVE T1,Q2 ;Get the structure number
CALL CFSSDM ;(T1/)Free the mount resources
MOVE T1,Q2 ;Get the structure number
CALL REMSTR ;(T1/)Release SDB resoucres
RET ;Done. No Login Structure
;
; Here if HB%HBM is lit in SDBSTS by CKHOMU.
;
FNDHBM: MOVE T3,SDBNAM(Q1) ;Get additional data
BUG.(CHK,LGSHBM,DSKALC,SOFT,<FNDLGS - Login Structure contains unit mismatches>,<<T3,STRNAM>>,<
Cause: Routine FNDLGS was trying to build the Login Structure. CKHOMU
found discrepencies between the home blocks of the units composing
this structure.
Action: Examine the units that are a part of the Login Structure. Fix the
unit mismatches and re-boot the system.
The Login Structure has not been mounted. The boot structure is
used as PS:.
Data: STRNAM - Sixbit Structure Name
>,,<DB%NND>) ;[7.1210]
FNDERR: MOVE T1,Q2 ;Get the structure number
CALL CLRSTB ;(T1/)Release the SDB
RET ;Done
;
; Here if MS%MXB is lit in SDBSTS by CKHOMU.
;
FNDMXB: MOVE T3,SDBNAM(Q1) ;Get additional data
BUG.(CHK,LGSMXB,DSKALC,SOFT,<FNDLGS - Login Structure bit table is too large for monitor buffer>,<<T3,STRNAM>>,<
Cause: Routine FNDLGS was trying to build the Login Structure. CKHOMU
found that the bit table for the Login Structure is too large for
the monitor's internal buffers.
Action: Examine the units that are a part of the Login Structure. Fix the
structure and re-boot the system.
The Login Structure has not been mounted. The boot structure is
used as PS:.
Data: STRNAM - Sixbit Structure Name
>,,<DB%NND>) ;[7.1210]
JRST FNDERR ;Do finish up
;
; Here if there is a missing unit in the Login Structure
;
FNDMSU: MOVE T3,SDBNAM(Q1) ;Get additional data
BUG.(CHK,LGSMSU,DSKALC,SOFT,<FNDLGS - Login Structure is missing a physical unit>,<<T3,STRNAM>>,<
Cause: Routine FNDLGS was trying to build the Login Structure. It
discovered that the structure built by CKHOMU was missing a unit.
Action: Replace the missing Login Structure unit and re-boot the system.
The Login Structure has not been mounted. The boot structure is
used as PS:.
Data: STRNAM - Sixbit Structure Name
>,,<DB%NND>) ;[7.1210]
JRST FNDERR ;Go finish up
;
; Here if there are multiple units with the same logical unit number in the
; structure.
;
FNDMUN: MOVE T3,SDBNAM(Q1) ;Get additional data
BUG.(CHK,LGSMUN,DSKALC,SOFT,<FNDLGS - Login Structure contains multiple units>,<<T3,STRNAM>>,<
Cause: Routine FNDLGS was trying to build the Login Structure. It
discovered that the structure built by CKHOMU contained multiple
units with the same logical unit number.
Action: Fix the duplicate units and re-boot the system.
The Login Structure has not been mounted. The boot structure is
used as PS:.
Data: STRNAM - Sixbit Structure Name
>,,<DB%NND>) ;[7.1210]
JRST FNDERR ;Go finish up
;
; Here if there is a write-locked unit in the Login Structure
;
FNDWLK: MOVE T3,SDBNAM(Q1) ;Get additional data
BUG.(CHK,LGSWLK,DSKALC,SOFT,<FNDLGS - Login Structure has a write-locked unit>,<<T3,STRNAM>>,<
Cause: Routine FNDLGS was trying to build the Login Structure. It
discovered that the structure built by CKHOMU was missing a unit.
Action: Replace the missing Login Structure unit and re-boot the system.
The Login Structure has not been mounted. The boot structure is
used as PS:.
Data: STRNAM - Sixbit Structure Name
>,,<DB%NND>) ;[7.1210]
JRST FNDERR ;Go finish up
ENDSV.
SUBTTL MNTLGS - Register the Login Structure with CFS
;[7.1112]
;
; MNTLGS:
;
; This routine is called to register the Login Structure with CFS. It tries
; to mount the structure only with shared access.
; Call:
; T1/ STRTAB offset of Login Structure SDB
; CALL MNTLGS
; Returns:
; +1: Failed to register the mount
; +2: The CFS mount succeeded
;
MNTLGS: MOVEI T2,0 ;0 = shared access
CALL CFSSMT ;(T1,T2/)Register the mount with CFS
RET ;Failed
RETSKP ;Succeeded
SUBTTL LGSERR - Clean up after MNTLGS failure
;[7.1112]
;
; LGSERR
;
; This routine is called by FNDLGS when a call to MNTLGS fails. It issues a
; LGSMTF BUGCHK and cleans up the SDB and assocaited UDBs.
; Call:
; T1/ Structure number
; Q1/ SDB address of Login Structure
; CALL LGSERR
; Returns:
; +1: Always
;
LGSERR: MOVE T3,SDBNAM(Q1) ;Get structure name
BUG.(CHK,LGSMTF,DSKALC,SOFT,<FNDLGS - Failed to mount the Login Structure in the cluster>,<<T3,STRNAM>>,<
Cause: Routine FNDLGS was trying to build the Login Structure. It
called routine MNTLGS top register the mount with CFS with shared
access. This call failed do the structure cannot be used as the
Login Structure. The most likely cause if this BUGCHK is that some
other system in the cluster has this structure mounted with
exclusive access.
Action: Change the access of this structure on other nodes in the cluster
to "shared", the re-boot the system.
The Login Structure has not been mounted. The boot structure is
used as PS:.
Data: STRNAM - Sixbit Structure Name
>,,<DB%NND>) ;[7.1210]
CALL REMSTR ;(T1/)Clean up SDB and UDBs
RET ;Done
SUBTTL CHKHOM - Examine a disk unit at startup
;[7.1112]
; CKHOMU:
;
; Called by CHKHOM and FNDLGS to find and build a structure. It is
; first called to find and mount the swapping structure (from routine
; CHKHOM). It places the SDB for this structure in STRTAB offset 0. It
; is then called by FNDLGS to find and mount a separate Login
; Structure. If found, the SDB for the structure is placed in STRTAB
; offset 1.
; Call:
; P1/ CDB
; P2/ KDB if any
; P3/ UDB
; FSIPPA/ Physical page number locked for I/O
; FSICUR/ Name of structure currently being built by CKHOMU
; FSINAM/ Name of specific structure requested by caller
; FSILGS/ 0 to build a swapping structure, -1 for a Login Structure
; CALL CKHOMU
;Returns:
; +1: Always
;Uses Q1-Q3
;
RESCD(INIT) ;[7.1112]
CKHOMU: CALL CHKUDB ;[7.1112](P3/)See if we can use this UDB
RET ;[7.1112]No
MOVE T3,P3 ;COPY UDB FOR CALL
CALL FNDCH1 ;CALCULATE THE CKU NUMBERS
MOVEM T1,Q2 ;REMEMBER FOR LATER USE
MOVE T2,FSIPPA ;GET PAGE FOR IO
MOVEI T3,HM1BLK ;GET HOME BLOCK NUMBER
MOVEI T4,HOMPGA ;GET VIRTUAL PAGE ADR TO READ INTO
CALL REDHOM ;[7.1112](T1,T2,T3,T4/)READ IN THE HOME BLOCKS
RET ;ERROR OR OFF-LINE
MOVEI T1,HOMPGA ;NOW CHECK THE FIRST HOME BLOCK
MOVEI T2,HM1BLK ;...
CALL HBCCHK ;[7.1112](T1,T2/)CHECK THE CONSISTENCY CHECKS
TXZA Q1,HB%1OK ;HOME BLOCKS BAD
TXO Q1,HB%1OK ;HOME BLOCK IS GOOD
MOVEI T1,HOMPGA+HBLEN ;NOW CHECK THE BACKUP HOME BLOCK
MOVEI T2,HM2BLK
CALL HBCCHK ;[7.1112](T1,T2)
TXZA Q1,HB%2OK ;BACKUP HOME BLOCK IS BAD
TXO Q1,HB%2OK ;BACKUP HOME BLOCK IS GOOD
TXNE Q1,HB%2OK ;ARE THERE ANY GOOD HOME BLOCKS
HRRI Q1,HOMPGA+HBLEN ;YES, GET ADR OF HOME BLOCK
TXNE Q1,HB%1OK ;SEE IF PRIMARY IS GOOD
HRRI Q1,HOMPGA ;YES, USE IT
TRNN Q1,-1 ;ANY HOME BLOCKS GOOD?
RET ;NO, RETURN
MOVX T1,US.WLK ;SEE IF THIS UNIT IS WRITE LOCKED
TDNE T1,UDBSTS(P3) ;...
TXO Q1,HB%WLK ;YES, SET WRITE LOCKED FLAG
HRRZ T1,Q1 ;GET ADDRESS OF HOME BLOCK
;...
;[7.1112]
; See if this unit is part of the structure we want to build.
;
SKIPN FSINAM ;[8868] Looking for specific name?
IFSKP. ;[8868] Yes
MOVE T2,HOMSNM(T1) ;[7289]GET THE STRUCTURE NAME
CAME T2,FSINAM ;[7289]IS THIS IT?
RET ;[7289]NO. SO DON'T BUILD THE SDB
ELSE. ;[7289]NO NAME, SO CHECK SERIAL NUMBER
SKIPE FSILGS ;[7.1112]Doing swapping structure?
IFSKP. ;[7.1112]If yes...
MOVE T2,HOMSER(T1) ;[7289]GET THE SERIAL # FROM HOME BLOCKS
CAME T2,APRSER ;[7289]DOES IT MATCH THIS SYSTEM?
RET ;[7289]NO, SO DON'T BUILD AN SDB
MOVE T2,HOMSNM(T1) ;[7289]YES. GET THE STRUCTURE NAME
ELSE. ;[7.1112]Looking for Login Structure?
MOVE T2,STRTAB+PSNUM ;[7.1112]Get SDB address of boot structure
MOVE T4,HOMSNM(T1) ;[7.1112]Get name of this structure
CAMN T4,SDBNAM(T2) ;[7.1112]Part of boot structure?
RET ;[7.1112]Yes. Ignore it
MOVSI T2,-4 ;[7.1112]Number of words to scan
HRR T2,T1 ;[7.1112]Make AOBJN pointer
DO. ;[7.1112]Start loop
HLRZ T3,HOMLS1(T2) ;[7.1112]Get LH of word
CAMN T3,APRSER ;[7.1112]Match this CPU?
EXIT. ;[7.1112]Yes. Exit loop
HRRZ T3,HOMLS1(T2) ;[7.1112]Get RH of word
CAMN T3,APRSER ;[7.1112]Match this CPU?
EXIT. ;[7.1112]Yes. Exit loop
AOBJN T2,TOP. ;[7.1112]Search all 4 words
RET ;[7.1112]Can't find a match
ENDDO. ;[7.1112]End loop
MOVE T2,HOMSNM(T1) ;[7.1112]Load structure name
ENDIF. ;[7.1112]
ENDIF. ;[7289]
SKIPN FSICUR ;FIRST TIME THRU?
MOVEM T2,FSICUR ;YES, STORE CURRENT NAME
CAME T2,FSICUR ;ARE THEY THE SAME?
RET ;NO, DON'T BUILD AN SDB, THEN
;[7.1112]
; Here to attempt to add this unit to the SDB in progress or to start an
; SDB for a new structure.
;
SETZ T4, ;INDICATE NO COPYING REQUIRED
TXNN Q1,HB%1OK ;WAS FIRST HOME BLOCK OK?
MOVEI T4,CPYH2 ;NO. SET UP TO COPY THE SECONDARY
TXNN Q1,HB%2OK ;WAS SECOND HOME BLOCK OK?
MOVEI T4,CPYH1 ;NO. SET UP TO COPY PRIMARY
JUMPE T4,CHKHO8 ;BOTH OK. DON'T COPY EITHER
MOVX T1,MI%MSG ;T1/ASK FOR MESSAGE
HRRI T1,HOMPGA ;T1/VIRTUAL START OF WORK PAGE
MOVE T2,FSIPPA ;T2/PHYSICAL START OF WORK PAGE
MOVE T3,Q2 ;GET CKU NUMBERS
CALL 0(T4) ;COPY THE GOOD ONE INTO THE BAD ONE
JRST CHKHO8 ;FAILED. LEAVE ERROR BITS SET
TXO Q1,HB%1OK!HB%2OK ;OK, CLEAR ERROR BITS
CHKHO8: MOVE T1,Q1 ;T1/(FLAGS,,ADR OF HOME BLOCK)
MOVE T2,P3 ;T2/ADDRESS OF UDB FOR THIS UNIT
CALL BLDSTR ;[7.1112](T1,T2/T1)GO BUILD STRTAB AND SDB
; RETURNS ADDRESS OF SDB IN T1
RET ;RAN OUT OF STR'S
;SDB BUILT AND STRTAB POINTS TO IT. STORE POINTER TO UDB+FLAGS IN SDBUDB
MOVE T2,P3 ;GET ADDRESS OF UDB
HLL T2,Q1 ;SAVE FLAGS FOR THIS UNIT
HRRZ T3,HOMLUN(Q1) ;GET LOGICAL UNIT # OF THIS UNIT
ADDI T3,SDBUDB(T1) ;GET INDEX INTO SDB FOR THIS UNIT
SKIPE 0(T3) ;GET CURRENT UDB ADR
TXO T2,HB%MUN ;MARK THAT THERE ARE MULTIPLE UNITS
IORM T2,0(T3) ;STORE UDB ADR AND FLAGS IN SDBUDB
RET ;DONE WITH THIS UNIT
SUBTTL CHKUDB - Verufy a UDB for CKHOMU
;[7.1112]
;
;CHKUDB:
;
; This routine is called by CKHOMU to verify that a given UDB is good
; enough to bother trying to read the home block. If word FSIFLG is
; non-zero, then it will make sure the disk is online. If it is not and the
; reason is that MSCP has not onlined it yet, we will wait for up to 5
; seconds for the online to happen. If the home block check is active, we
; will also wait for up to 5 seconds for that to finish.
;
; Call:
; P3/ Address of UDB to check
; and
; FSIFLG/ 0 if CKHOMU is looking for a boot structure
; -1 if CKHOMU is looking for a Login Structure
; CALL CHKUDB
; Returns:
; +1: UDB is not useable (tape, offline or otherwise)
; +2: Success, UDB is useable
;
CHKUDB: MOVX T3,US.DSK ;[7.1276] Get disk bit
SKIPL UDB2ND(P3) ;[7.1276] Is this a primary port?
TDNN T3,UDBSTS(P3) ;[7.1276] Is this a disk unit?
RET ;[7.1276] No, skip it
SKIPN FSILGS ;Looking for a Login Structure?
RETSKP ;No, return success
SKIPL UDBSTS(P3) ;[7.1276] Is the unit offline
IFSKP. ;[7.1276] If offline...
MOVX T3,U1.NOL ;[7.1276] Get MSCP offline bit
TDNN T3,UDBST1(P3) ;[7.1276] Has this been onlined yet by MSCP?
RET ;[7.1276] No, don't examine it
ENDIF. ;[7.1276]
;[7.1276]
; At this point, the disk is either online or it's an MSCP disk that has
; not yet been onlined. We'll now wait until it is both onlined via MSCP
; and the home block check is done.
MOVEI T2,^D50 ;[7.1276] Loop counter (5 seconds)
MOVX T3,US.CHB ;[7.1276] Get UDBSTS bit to test
MOVX T4,U1.NOL ;[7.1276] And get MSCP online bit
DO.
TDNE T4,UDBST1(P3) ;[7.1276] Has disk been recognized?
IFSKP. ;[7.1276] MSCP seen this disk
TDNN T3,UDBSTS(P3) ;[7.1276] Home block check done?
RETSKP ;[7.1276] Yes, MSCP seen and home block check done
ENDIF. ;[7.1276]
MOVEI T1,^D100 ;[7.1276] Dismiss for 1/10th second
DISMS% ;[7.1276] for bit(s) to clear (maybe)
SOJGE T2,TOP. ;[7.1276] Try for up to 60 seconds
ENDDO.
MOVE T3,UDBSTS(P3) ;[7.1276] Get UDBSTS bits for BUGCHK
MOVE T4,UDBST1(P3) ;[7.1276] It's in 2 words
SKIPE CIBUGX ;[7.1276] See this if debugging
BUG.(CHK,LGSDNA,DSKALC,SOFT,<CHKUDB - Disk unit is unavailable for use as Login Structure>,<<P3,UDB>,<T3,UDBSTS>,<T4,UDBST1>>,<
Cause: Routine CHKUDB is being called to determine if a disk unit is
useable a part of the Login Structure. This BUGCHK indicates
that within a 5 second timeout period either the unit did not
come online via MSCP or the home block check did not complete.
These conditions are indicated by bits US.CHB or U1.NOL
being set in words UDBSTS and UDBST1 of the unit's UDB.
Action: Examine the additional data of this BUGCHK to determine why
the unit is not available. Examine the unit for problems when
the system is fully booted.
This unit is not used as part of the Login Structure.
Data: UDB - Address of UDB for unit
UDBSTS - The primary UDB status word
UDBST1 - The secondary UDB status word
>,,<DB%NND>) ;[7.1276]
RET ;Done
SUBTTL BLDSTR - Build SDB and set up STRTAB
;BLDSTR - ROUTINE TO SET UP SDB'S AND STRTAB
;ACCEPTS:
; T1/VIRTUAL ADDRESS OF WORK PAGE HOLDING HOME BLOCK
; T2/ADDRESS OF UDB FOR THIS UNIT
; CALL BLDSTR
;RETURNS +1: NO MORE ROOM IN STRTAB
; T1/ADDRESS OF SDB
; +2: SUCCESS,
; T1/ ADDRESS OF SDB
;THIS ROUTINE IS CALLED BY FSIINI, ONCE FOR EACH PHYSICAL UNIT
;IF AN SDB ENTRY EXISTS FOR A STRUCTURE WITH THE NAME IN THE HOME
;BLOCKS, IT ADDS THIS UNIT TO THAT STRUCTURE. IF NOT, IT CREATES
;A NEW SDB. IF ERRORS ARE DETECTED, FLAGS ARE SET IN SDBUDB (IF THE
;ERROR APPLIES TO A SINGLE UNIT) OR SDBSTS (IF IT APPLIES TO THE
;STRUCTURE). ERRORS ARE NOT INDICATED BY A +1 RETURN.
BLDSTR::STKVAR <UDBLOC>
MOVEM T2,UDBLOC ;SAVE ADDRESS OF UDB
MOVE T2,HOMSNM(T1) ;GET THE STR NAME
MOVSI T4,-STRN ;SET UP TO SEARCH FOR THIS STR NAME
BLDST1: SKIPN T3,STRTAB(T4) ;IS THIS STR DEFINED?
JRST [ MOVE T2,UDBLOC ;NOT YET, GET ADDRESS OF UDB
HRRZ T3,T4 ;ALSO GET STRUCTURE NUMBER
CALL CRTSTR ;CREATE THE SDB
MOVE T1,T3 ;FAILED, GET ADDRESS OF SDB
RETSKP] ;SLOT CREATED, TAKE SUCCESS RETURN
CAMN T2,SDBNAM(T3) ;IS THIS THE STRUCTURE WE WANT?
JRST [ MOVE T2,UDBLOC ;YES, GET ADDRESS OF UDB
CALL ADDSTR ;ADD THE UNIT TO THE STRUCTURE
MOVE T1,T3 ;FAILED, GET ADDRESS OF SDB
RETSKP] ;UNIT ADDED, TAKE SUCCESS RETURN
AOBJN T4,BLDST1 ;NO, LOOP THROUGH ALL STR'S
RETBAD ;NO MORE SLOTS AVAILABLE
SUBTTL ADDSTR - Add a unit to an existing SDB
;ADDSTR - ADD A UNIT TO AN EXISTING SDB
;ACCEPTS:
; T1/ VIRTUAL ADDRESS OF START OF HOME BLOCKS
; T2/ ADDRESS OF UDB FOR THIS UNIT
; T3/ ADDRESS OF SDB FOR THIS STRUCTURE
; CALL ADDSTR
;RETURNS +1: PACK DOESN'T AGREE WITH REST OF STRUCTURE
; T1/ERROR CODE
; T3/ ADDRESS OF SDB
; +2: PACK ADDED TO STRUCTURE
; T1/ ADDRESS OF SDB
ADDSTR: STKVAR <ADSUDB>
MOVEM T2,ADSUDB ;SAVE ADDRESS OF UDB
HLRZ T2,HOMLUN(T1) ;GET NUMBER OF PACKS IN STR
CAME T2,SDBNUM(T3) ;SAME AS PREVIOUS HOME BLOCK?
JRST ADDST5 ;NO, MISMATCH
MOVE T2,HOMRXB(T1) ;GET ADR OF ROOT IB
CAME T2,SDBRXB(T3) ;CHECK FOR MATCHING ADR'S
JRST ADDST5 ;NO MATCH
MOVE T2,HOMBXB(T1) ;GET ADR OF BACKUP IB
CAME T2,SDBBXB(T3)
JRST ADDST5 ;NO MATCH
MOVE T2,HOMMID(T1) ;GET MEDIA ID
CAME T2,SDBPUC(T3) ;SAME AS ID OF OTHER PACKS ?
JRST ADDST5 ;NO, FAIL
MOVE T4,ADSUDB ;GET ADDRESS OF UDB
CALL GETTYP ;GET DISK SIZE POINTER
RETBAD (MSTX17) ;INDICATE 'PACKS MUST BE OF SAME TYPE'
CAME T4,SDBTYP(T3) ;IS THE NEW DISK THE SAME SIZE
JRST ADDST5 ;NO. NO MATCH
SKIPN T2,HOMBTB(T1) ;GET SIZE OF TOP HALF OF BIT TABLE
MOVEI T2,BTBTOP ;ZERO. USE OLD STYLE SIZE
CAME T2,SDBBT0(T3) ;IS IT THE SAME AS THE REST OF THE STRUCTURE?
JRST ADDST5 ;NO. REPORT HOME BLOCKS MISMATCH
MOVE T2,HOMFLG(T1) ;GET FLAGS
TXZ T2,MS%DMP ;[7.1081] Turn off the dumpable bit when adding
IORM T2,SDBSTS(T3) ;SAVE FLAGS
MOVE T4,ADSUDB ;SET T4=ADDRESS OF UDB
CALL FIXVID ;FIX UDBVID
MOVE T1,T3 ;RETURN WITH ADR OF SDB IN T1
RETSKP
ADDST5: MOVX T2,HB%HBM ;MARK THAT THE HOME BLOCKS MISMATCH
IORM T2,SDBSTS(T3)
RETBAD (MSTX17) ;INDICATE 'PACKS MUST BE OF SAME TYPE'
SUBTTL CRTSTR - Create a new SDB
;CRTSTR - CREATE A NEW SDB
;ACCEPTS:
; T1/ ADDRESS OF HOME BLOCK
; T2/ ADDRESS OF UDB FOR THIS UNIT
; T3/ OFFSET IN STRTAB FOR NEXT AVAILABLE SLOT
;
; CALL CRTSTR
;
;RETURNS +1: FAILURE, T1/ ERROR CODE
; T3/ ADDRESS OF SDB
; +2: SUCCESS, T1/ ADDRESS OF SDB
CRTSTR::ASUBR <CRTSHB,CRTUDB,CRTSSN,CRTSER> ;SAVE CALLING ARGUMENTS
SETZM CRTSER ;INDICATE NO ERRORS YET
TRNN T3,-1 ;IF STR 0, USE THE PREALLOCATED SDB
JRST [ MOVE T1,[SDBBL0,,SDBBL0+1]
SETZM SDBBL0 ;GET A ZERO
BLT T1,SDBBL0+SDBLN-1 ;CLEAR THE SDB
MOVEI T1,SDBBL0 ;GET ADDRESS OF PS SDB
JRST CRTST1] ;AND PROCEED
MOVEI T1,SDBLN ;GET SPACE FOR SDB
HRLI T1,.RESP3 ;FROM THE RESIDENT FREE POOL
MOVX T2,RS%SE0!.RESUP ;GET SPACE FROM UNITS POOL, SECTION 0
CALL ASGRES ;...
RETBAD () ;COULD NOT GET SPACE
CRTST1: MOVE T4,CRTSSN ;GET STR NUMBER TO BE USED
MOVEM T1,STRTAB(T4) ;STORE THE POINTER TO THE SDB
MOVE T3,T1 ;GET ADR OF SDB INTO T3
MOVE T1,CRTSHB ;SET UP ACS AGAIN
MOVE T4,CRTUDB ;GET UDB ADDRESS
MOVE T2,HOMSNM(T1) ;GET STR NAME
MOVEM T2,SDBNAM(T3) ;SAVE NAME IN SDB
MOVEM T2,UDBVID(T4) ;STORE STR NAME AS VOLUMN ID IN UDB
HLRZ T2,HOMLUN(T1) ;GET NPACKS
MOVEM T2,SDBNUM(T3) ;STORE NUMBER OF UNITS IN SDB
MOVE T2,HOMRXB(T1) ;ROOT INDEX ADR
MOVEM T2,SDBRXB(T3)
MOVE T2,HOMBXB(T1) ;BACKUP OF ROOT DIR
MOVEM T2,SDBBXB(T3)
MOVEI T2,NRESDN ;SET UP STARTING DIR # FOR GETNDN
STOR T2,STRLDN,(T3) ;GETNDN STARTS SCANNING AT DIR # 20
;...
MOVE T2,HOMMID(T1) ;GET MEDIA ID
STOR T2,STRMI,(T3) ;STORE MEDIA ID (PACK UNIQUE CODE)
CALL GETTYP ;GET DISK SIZE POINTER
JRST [ MOVEI T2,MSTX27 ;INDICATE 'NOT A DISK'
MOVEM T2,CRTSER
JRST CRTST5]
MOVEM T4,SDBTYP(T3) ;SAVE IT IN THE SDB
MOVE T2,MINFPG(T4) ;GET INITIAL VALUE OF MINIMUM FREE COUNT
MOVEM T2,SDBOMF(T3) ;REMEMBER THIS IN THE SDB
MOVEM T2,SDBMFP(T3) ;START WITH THIS AS THE MINIMUM VALUE
MOVE T2,MAXFPU(T4) ;GET TURNING POINT OF ALLOCATION ALGORITHM
IMUL T2,SDBNUM(T3) ;GET TURNING POINT FOR STRUCTURE
MOVEM T2,SDBMXF(T3) ;SAVE IT IN SDB
MOVE T2,CYLUNT(T4) ;SET THE STARTING TRACK NUMBER
LSH T2,-1 ; FOR THE FREE CHOICE TO THE MIDDLE
MOVEM T2,SDBLCA(T3) ; OF THE FIRST PACK OF THE STRUCTURE
MOVE T2,SDBNUM(T3) ;GET NUMBER OF UNITS IN STRUCTURE
IMUL T2,CYLUNT(T4) ;COMPUTE TOTAL CYLINDERS IN STRUCTURE
MOVEM T2,SDBCYL(T3) ;SAVE IN SDB
IMUL T2,PAGCYL(T4) ;COMPUTE TOTAL PAGES IN STRUCTURE
CAMLE T2,[MXPGUN] ;LEGAL # OF PAGES?
JRST [ MOVEI T2,MSTX35 ;NO. STRUCTURE TOO BIG
MOVEM T2,CRTSER ;SAVE ERROR
JRST CRTST5] ;AND GIVE UP
MOVE T2,HOMP4S(T1) ;NUMBER PAGES FOR SWAPPING PER UNIT
IMUL T2,SECPAG(T4) ;CONVERT TO SECTORS
MOVEM T2,SDBNSS(T3) ;SAVE IN SDB
MOVE T2,HOMFST(T1) ;FIRST SWAPPING TRACK
IMUL T2,SECCYL(T4) ;CONVERT TO SECTOR NUMBER
MOVEM T2,SDBFSS(T3) ;SAVE IN SDB
MOVE T2,CRTUDB ;GET ADDRESS OF UDB
MOVE T2,CYLUNT(T4) ;GET NUMBER OF CYLINDERS PER UNIT
IMUL T2,SECCYL(T4) ;CONVERT TO SECTORS
MOVEM T2,SDBSIZ(T3) ;SAVE IN SDB
SKIPN T2,HOMBTB(T1) ;SEE IF SIZE OF TOP OF BIT TABLE IS DEFINED
JRST [ MOVEI T2,BTBTOP ;NO. MUST HAVE BEEN BUILT BY OLD MONITOR
MOVEM T2,SDBBT0(T3) ;SAVE OLD SIZE OF TOP HALF OF BIT TABLE
MOVEI T2,BTBBOT ; AND OLD SIZE OF BOTTOM HALF
MOVEM T2,SDBBT1(T3) ; IN THE SDB
JRST CRTST3]
MOVEM T2,SDBBT0(T3) ;BUILT BY RELEASE 2 OR LATER. SAVE SIZE
; OF TOP HALF OF BIT TABLE
IMUL T2,BTWCYL(T4) ;COMPUTE NUMBER OF BIT WORDS IN BOTTOM
MOVEM T2,SDBBT1(T3) ;SAVE IT IN THE SDB
;...
CRTST3: ADD T2,SDBBT0(T3) ;COMPUTE TOTAL SPACE IN FILE
CAMLE T2,BTBSIZ ;WILL IT FIT IN ADDRESS SPACE?
JRST [ HRRZ T2,HOMLUN(T1) ;GET UNIT WITHIN STRUCTURE
ADDI T2,SDBUDB(T3) ;POINT TO ITS UDB
MOVX T4,MS%MXB ;NO. INDICATE THIS FOR LATER
IORM T4,0(T2)
MOVEI T2,MSTRX6 ;INDICATE 'BAD HOME BLOCKS'
MOVEM T2,CRTSER
JRST .+1]
CRTST5: MOVE T2,HOMFLG(T1) ;GET FLAGS
TXZ T2,MS%DMP ;[7.1081] Turn off the dumpable bit please
IORM T2,SDBSTS(T3) ;SAVE FLAGS
MOVE T4,CRTUDB ;SET T4=ADDRESS OF UDB
CALL FIXVID ;FIX UP UDBVID IF A MULTI-PACK STRUCTURE
MOVE T1,T3 ;RETURN WITH ADR OF SDB IN T1
SKIPN CRTSER
RETSKP
MOVE T1,CRTSSN ;GET STR NUMBER
CALL CLRSTB ;CLEAR THE STRTAB ENTRY
MOVE T1,CRTSER ;GET THE ERROR CODE
RETBAD () ;GIVE FAILURE RETURN
SUBTTL FIXVID - Fix up UDBVID
;FIXVID - FIX UP UDBVID FOR A UNIT IN A MULTI-PACK STRUCTURE
;
;ACCEPTS
; T1/ADDRESS OF HOME BLOCK
; T3/ADDRESS OF SDB
; T4/ADDRESS OF UDB
;
; CALL FIXVID
;RETURNS +1 WITH UDBVID FIXED TO BE XXXN, WHERE XXX=STR NAME, N=UNIT IN STR
FIXVID: HLRZ T2,HOMLUN(T1) ;GET NO OF PACKS IN STRUCTURE
SOJLE T2,R ;NOTHING TO DO IF A SINGLE-PACK STRUCTURE
HRRZ T2,HOMLUN(T1) ;MULTI-PACK - GET UNIT WITHIN STRUCTURE
MOVE T1,SDBNAM(T3) ;GET NAME OF STRUCTURE
TRNE T1,77 ;6-CHARACTER NAME?
RET ;YES, NOTHING WE CAN DO ABOUT IT
ADDI T2,'0' ;NO, GET SIXBIT UNIT NUMBER
MOVEI T1,7700 ;SET FOR TEST ON NAME
FIXVI1: TDNE T1,SDBNAM(T3) ;THIS CHARACTER IN NAME?
JRST FIXVI2 ;YES, HERE IS WHERE TO APPEND UNIT NO
LSHC T1,6 ;NO, SHIFT MASK, ENDING CHARACTER
JRST FIXVI1 ;AND TEST NEXT CHARACTER OF NAME
FIXVI2: IOR T2,SDBNAM(T3) ;MANUFACTURE XXXX+N
MOVEM T2,UDBVID(T4) ;SAVE NAME IN UDB
RET ;AND WE ARE DONE
SUBTTL CLRSTB - Clear an entry in STRTAB
;CLRSTB - CLEAR AN ENTRY IN STRTAB
;ACCEPTS IN T1/ STR NUMBER
; CALL CLRSTB
;RETURNS +1: ALWAYS
CLRSTB::SKIPN T2,STRTAB(T1) ;IS THERE ANYTHING THERE?
RET ;NO
SETZM STRTAB(T1) ;YES, CLEAR IT
JUMPE T1,R ;DONT TRY TO RELEASE STR 0'S SDB
MOVE T1,T2 ;AND RELEASE THE SDB BLOCK
CALLRET RELRES ;BACK TO THE RESIDENT POOL
SUBTTL GETTYP - Get type of disk
;GETTYP - GET TYPE OF DISK
;ACCEPTS:
; T1/ ADDRESS OF HOME BLOCK
; T3/ ADDRESS OF SDB
; T4/ ADDRESS OF UDB FOR THIS UNIT
; CALL GETTYP
;RETURNS +1: UNKNOWN DISK TYPE
; +2: VALID DISK TYPE,
; T2/ OFFSET INTO DSKUTP FOR THIS DISK TYPE
; T4/ ADDRESS OF DISK SIZE TABLE
;PRESERVES T1 AND T3
GETTYP: LOAD T4,USTYP,(T4) ;GET TYPE OF UNIT
MOVSI T2,-NDSKUT ;T2/(-COUNT OF TABLE,,CURRENT OFFSET)
CAME T4,DSKUTP(T2) ;IS THIS A DISK?
AOBJN T2,.-1 ;NO. KEEP LOOKING
SKIPL T2 ;OUT OF LOOP. DID WE FIND ONE?
JRST [ HRRZ T2,HOMLUN(T1)
ADDI T2,SDBUDB(T3)
MOVX T4,MS%TYP
IORM T4,0(T2)
RETBAD]
MOVE T4,DSKSIZ(T2) ;YES. GET ADDRESS OF SIZE DATA FOR THIS TYPE
RETSKP
SUBTTL BLDNEW/BLDSDB - Create or add to an SDB
;BLDNEW - ROUTINE CALLED FROM THE MSTR JSYS TO CREATE A NEW SBD
;BLDSDB - ROUTINE CALLED FROM THE MSTR JSYS TO ADD A UNIT TO A STRUCTURE
;
;ACCEPTS IN T1/ CKU NUMBER OF UNIT
; T2/ ADDRESS OF HOME BLOCK PAGE
; T3/ FOR BLDNEW: STRUCTURE NUMBER
; FOR BLDSDB: SDB ADDRESS
;
;RETURNS: +1 FAILURE, ERROR CODE IN T1
; +2 SUCCESS, T1/ ADDRESS OF SDB
BLDNEW::SKIPA T4,[IFIW CRTSTR] ;GET ONE ROUTINE TO CALL
BLDSDB::MOVE T4,[IFIW ADDSTR] ;OR OTHER ROUTINE TO CALL
ASUBR <BLSCKU,BLSADR,BLSSDB,BLSROU>
CALL CKUNPK ;UNPACK THE CKU NUMBERS
CALL CHKCKU ;VERIFY THEY ARE GOOD AND RETURN THE UDB
RETBAD () ;FAILED
MOVE T2,T1 ;PUT UDB IN RIGHT AC
MOVE T1,BLSADR ;GET ADDRESS OF PAGE CONTAINING HOME BLOCKS
MOVE T3,BLSSDB ;GET SDB ADDRESS OR STRUCTURE NUMBER
CALL @BLSROU ;CREATE AN SDB OR ADD THIS UNIT TO IT
RETBAD () ;FAILED, RETURN ERROR
RETSKP ;RETURN SUCCESS
SUBTTL REMSTR - Remove a structure from STRTAB
;REMSTR - REMOVE A STRUCTURE FROM STRTAB
; This routine cleans up the UDBs associated with the structure and
; clears the STRTAB entry. It releases the SDB free space when
; needed.
; ACCEPTS:
; T1/ STRUCTURE NUMBER (OFFSET INTO STRTAB) IN RH
;
; CALL REMSTR
;
; RETURNS: +1: ALWAYS
;
REMSTR: SAVET ;[7289]
SKIPN T3,STRTAB(T1) ;[7289]LOAD T3 WITH THE SDB ADDRESS
RET ;[7289]NOTHING TO DO IF ZERO
MOVN T2,SDBNUM(T3) ;[7289]MAKE AOBJN WORD FROM # OF UNITS
HRLZS T2 ;[7289]PUT NEGATIVE COUNT IN LEFT HALF
HRR T2,T3 ;[7289]AND SDB ADDRESS IN RIGHT HALF
REMST2: MOVE T3,SDBUDB(T2) ;[7289]GET ADDRESS OF UNIT DATA BLOCK
JUMPE T3,REMST3 ;[7289]IF NONE SETUP GO TO NEXT
SETOM UDBSTR(T3) ;[7289]CLEAR STRUCTURE INFORMATION IN UDB
SETZM SDBUDB(T2) ;[7289]CLEAR POINTER TO UNIT DATA BLOCK
REMST3: AOBJN T2,REMST2 ;[7289]LOOP OVER ALL UNITS IN THE STRUCTURE
HRRZS T1 ;[7289]GET STRUCTURE NUMBER ONLY
CALL CLRSTB ;[7289]CLEAN UP STRTAB
RET ;[7289]
SUBTTL UNIBAT - Check the BAT blocks on a unit
;UNIBAT - CHECK THE BAT BLOCKS ON A SINGLE UNIT, CALLED FROM MSTR JSYS
;
; ACCEPTS IN T1/ CHANNEL NUMBER
; T2/ CONTROLLER NUMBER
; T3/ UNIT NUMBER
; T4/ VIRTUAL ADDRESS,,PHYSICAL PAGE NUMBER OF BAT BLOCK PAGE
; CALL UNIBAT
; RETURNS: +1 FAILED, BAT BLOCKS BAD
; +2 SUCCESS, BAT BLOCKS OK
SWAPCD
UNIBAT::STKVAR <UNIBVA> ;ALLOCATE STORAGE
MOVEM T4,UNIBVA ;REMEMBER ADDRESS AND PAGE
CALL CHKCKU ;CONVERT THE CKU NUMBERS INTO UDB ADDRESS
RETBAD () ;CAN'T DO IT
MOVE T4,T1 ;MOVE UDB TO RIGHT AC
HLRZ T1,UNIBVA ;GET VIRTUAL ADDRESS OF BAT BLOCK PAGE
HRRZ T2,UNIBVA ;GET PHYSICAL PAGE NUMBER OF BAT BLOCK PAGE
LSH T2,PGSFT ;CONVERT TO PHYSICAL ADDRESS OF BAT BLOCK PAGE
MOVX T3,MS%NFB ;DO NOT REPAIR THE BAT BLOCKS IF BAD
CALLRET DOPACK ;GO CHECK THE BAT BLOCKS ON THIS UNIT
SUBTTL CRTHOM - Create a pair of new Home Blocks
;CRTHOM - CREATE A PAIR OF NEW HOME BLOCKS ON A UNIT
;
; ACCEPTS IN T1/ FLAGS,,ADDRESS OF ID INFO
; T2/ STRUCTURE NAME
; T3/ CKU VALUE (CHANNEL, CONTROLLER, AND UNIT NUMBERS)
; T4/ NUMBER OF UNITS IN STRUCTURE,,UNIT NUMBER WITHIN STRUCTURE
; P1/ # OF PAGES FOR SWAPPING ON THIS STRUCTURE
; P2/ MEDIA IDENTIFICATION (PACK UNIQUE CODE)
; P3/ SERIAL NUMBER OF CPU BOOTED FROM THIS STRUCTURE
; CALL CRTHOM
; RETURNS: +1 FAILED, COULD NOT WRITE HOME BLOCKS
; +2 SUCCESS, HOME BLOCKS WRITTEN
IDLEN==6 ;NUMBER OF WORDS OF UNIT AND OWNER ID INFO
CRTHOM::SAVEP
ASUBR <CRHINF,CRHSTR,CRHCKU,CRHNUM>
STKVAR <CRHVIR,CRHP4S,CRHMID,CRHUDB,CRHSER>
MOVEM P1,CRHP4S ;SAVE # OF PAGES FOR SWAPPING
MOVEM P2,CRHMID ;SAVE MEDIA ID
MOVEM P3,CRHSER ;SAVE SERIAL NUMBER
; VALIDATE AMOUNT OF SWAPPING SPACE REQUESTED
MOVE T1,CRHCKU ;GET CKU VALUE
CALL CKUNPK ;EXPAND INTO THE SEPARATE NUMBERS
CALL CHKCKU ;RETURN THE UDB IN T1
RETBAD () ;CAN'T FIND IT
MOVEM T1,CRHUDB ;REMEMBER THE UDB
HLRZ T2,CRHNUM ;GET NUMBER OF UNITS IN STRUCTURE
MOVE T3,CRHP4S ;GET # OF PAGES FOR SWAPPING ON THIS STR
CALL CHKSWP ;GO CHECK THE SWAPPING SPACE REQUESTED
RETBAD () ;FAILED, INVALID AMOUNT REQUESTED
; GET UNIT SIZE AND ADDRESS OF SIZE TABLE
MOVE P1,CRHUDB ;GET BACK UDB ADDRESS
MOVE P1,UDBSIZ(P1) ;THEN GET POINTER TO SIZE TABLE
HRLZ P3,CYLUNT(P1) ;GET NUMBER OF CYLINDERS PER UNIT
HLR P3,CRHNUM ;GET NUMBER OF UNITS IN STRUCTURE
;...
; GET A PAGE FOR IN WHICH TO CREATE A HOME BLOCK
NOINT ;DO NOT PERMIT INTERRUPTS
CALL ASGPAG ;ASSIGN A PAGE
RETBAD (,<OKINT>) ;FAILED, RETURN
MOVEM T1,CRHVIR ;SAVE ADDRESS OF PAGE
HRR T4,CRHVIR ;GET ADDRESS OF HOME BLOCK PAGE
HRL T4,CRHP4S ;GET # OF PAGES FOR SWAPPING ON THIS STR
MOVE T3,P3 ;GET UNIT SIZE AND # OF UNITS
MOVE T2,CRHSTR ;GET STRUCTURE NAME
HLLZ T1,CRHINF ;GET FLAGS
MOVE P2,CRHSER ;GET CPU SERIAL NUMBER
CALL SETHOM ;GO SET UP PRIMARY HOME BLOCK
; ADD REMAINING INFO TO THE HOME BLOCK
HRRZ T2,CRHVIR ;GET ADDRESS OF HOME BLOCK
MOVE T1,CRHMID ;GET MEDIA IDENTIFICATION (PACK UNIQUE CODE)
MOVEM T1,HOMMID(T2) ;SAVE MEDIA ID
MOVE P1,CRHUDB ;Get UDB address
MOVEM T1,UDBMID(P1) ;Save the new ID in the UDB too
HRRZ T1,CRHNUM ;GET UNIT NUMBER WITHIN STRUCTURE
HRRM T1,HOMLUN(T2) ;STORE UNIT # WITHIN STRUCTURE
HRLZ T1,CRHINF ;GET ADDRESS OF ID INFO BLOCK
HRRI T1,HOMUID(T2) ;GET DESTINATION ADDRESS
BLT T1,HOMUID+IDLEN-1(T2) ;COPY ID INFO INTO HOME BLOCK
; LOCK THE HOME BLOCK PAGE AND WRITE THE HOME BLOCKS
SETZM P2 ;INITIALIZE FAILURE FLAG
HRRZ T1,CRHVIR ;GET ADDRESS OF HOME BLOCK PAGE
CALL MLKMA ;LOCK THE PAGE
MOVEM T1,P1 ;SAVE PHYSICAL PAGE NUMBER
HRRZ T1,CRHVIR ;GET FLAGS,,VIRTUAL ADDRESS OF HOME BLOCK PAGE
HRRZ T2,P1 ;GET PHYSICAL PAGE NUMBER
LSH T2,PGSFT ;FORM PHYSICAL ADDRESS OF HOME BLOCK PAGE
MOVE T3,CRHCKU ;GET CKU NUMBERS
CALL CPYH1 ;WRITE OUT SECONDARY HOME BLOCK
SETOM P2 ;FAILED, FLAG ERROR
HRRZ T1,CRHVIR ;GET FLAGS,,VIRTUAL ADDRESS OF HOME BLOCK PAGE
HRRZ T2,P1 ;GET PHYSICAL PAGE NUMBER
LSH T2,PGSFT ;FORM PHYSICAL ADDRESS OF HOME BLOCK PAGE
MOVE T3,CRHCKU ;GET CKU NUMBERS
CALL CPYH2 ;WRITE OUT PRIMARY HOME BLOCK
SETOM P2 ;FAILED, FLAG ERROR
;...
; UNLOCK AND RETURN THE HOME BLOCK PAGE, AND RETURN
HRRZ T1,P1 ;GET PHYSICAL PAGE NUMBER
CALL MULKCR ;UNLOCK THE PAGE
HRRZ T1,CRHVIR ;GET VIRTUAL ADDRESS OF PAGE
CALL RELPAG ;RELEASE THE PAGE
OKINT ;PERMIT INTERRUPTS
JUMPN P2,R ;IF I/O ERROR, RETURN FAILURE
RETSKP ;ELSE RETURN SUCCESS
RESCD(INIT)
SUBTTL REDHOM - Read in the primary and backup Home Blocks
;REDHOM - READ IN THE PRIMARY AND BACKUP HOME BLOCKS
;OR THE PRIMARY AND BACKUP BAT BLOCKS
;ACCEPTS IN T1/ CKU NUMBERS OF DRIVE TO BE READ
; T2/ ADDRESS OF PAGE TO READ INTO
; T3/ LOCAL BLOCK ADDRESS OF PRIMARY BLOCK
; T4/ VIRTUAL CORE ADDRESS
; CALL REDHOM
;RETURNS +1: DRIVE OFF-LINE
; +2: BOTH BLOCKS READ IN (BUT NOT NECESSARILY WITHOUT ERRORS)
;
;NOTICE: SINCE AN RP20 HAS SECTORS OF 1000 WORDS, AND WE HAVE READ ONLY
;200 WORDS, A CERTAIN KIND OF OVERRUN IS EXPECTED TO OCCUR BY PHYH2, AND
;THEREFORE IS IGNORED. IF THE HOME BLOCKS READ BAD OCCASIONALLY, THEN
;THE PROBLEM MIGHT BE THAT THESE IGNORED OVERRUNS ARE "REAL".
REDHOM::STKVAR <REDCKU,REDHOB,REDBLK,REDVIR>
MOVEM T1,REDCKU ;SAVE CHANNEL, CONTROLLER, AND UNIT NUMBER
MOVEM T2,REDHOB ;SAVE ADDRESS OF PAGE TO HOLD HOME BLKS
MOVEM T4,REDVIR ; SAVE VIRTUAL ADDRESS
SETZM (T4) ; ZERO WHOLE AREA
HRLI T4,(T4) ; IN BOTH HALFS
AOS T4
HRRZ T2,T4 ;GET BASE ADDRESS AGAIN
BLT T4,<HBLEN*2-1>(T2) ; ZAP ENTIRE AREA
MOVEM T3,REDBLK ; SAVE LOCAL BLOCK NUMBER
MOVE T1,REDBLK ;GET UNIT RELATIVE ADR TO BE READ
MOVEI T2,HBLEN ;READ IN ONLY THE HOME BLOCK
MOVE T3,REDHOB ;GET ADDRESS TO READ INTO
MOVE T4,REDCKU ;GET CKU NUMBER
TXO T2,1B0!DOP%EO!DOP%PS ;GET AN ERROR ON OFFLINE
CALL UDSKIO ;READ IN THE HOME BLOCK
MOVE T4,REDVIR ;RESTORE VIRTUAL ADDRESS
SKIPE T1 ;WAS THERE AN ERROR?
SETZM HOMNAM(T4) ;YES. CLEAR NAME
MOVE T1,REDBLK ;GET BACK DISK ADDRESS
ADDI T1,HM2BLK-HM1BLK ;POINT TO BACKUP HOME BLOCKS
MOVEI T2,HBLEN ;SET UP LENGTH
MOVE T3,REDHOB ;GET ADDRESS TO READ INTO
ADDI T3,HBLEN ;PUT IT JUST AFTER FIRST HOME BLOCK
MOVE T4,REDCKU ;GET CKU NUMBER AGAIN
TXO T2,1B0!DOP%EO!DOP%PS ;GET AN ERROR ON OFFLINE
CALL UDSKIO ;READ IN HOME BLOCK
MOVE T4,REDVIR ;GET VIRTUAL ADDRESS
SKIPE T1 ;DISK ERROR?
SETZM <HOMNAM+HBLEN>(T4) ;YES. ZAP THIS NAME
TLC T1,-1 ;CHECK FOR DRIVE OFFLINE KIND OF ERROR
TLCN T1,-1 ;DRIVE OFF-LINE?
RET ;YES
RETSKP ;READ IN BOTH OK
SUBTTL HBCCHK - Check Home Block consistency
;HBCCHK - CHECK THE CONSISTENCY OF THE HOME BLOCKS
;ACCEPTS IN T1/ ADDRESS OF HOME BLOCK
; T2/ HOME BLOCK #
; CALL HBCCHK
;RETURNS +1: NOT CONSISTENT OR MULTIPLE LOGICAL UNITS
; +2: CONSISTENT, LOGICAL UNIT # IN T1
HBCCHK::MOVS T3,HOMNAM(T1) ;GET SIXBIT /HOM/
CAIE T3,'HOM' ;IS THIS CORRECT?
RET ;NO, GIVE ERROR RETURN
MOVE T3,HOMCOD(T1) ;GET HOME BLOCK CODE
CAIE T3,CODHOM ;MUST BE "707070"
RET ;INCONSISTENT
MOVE T3,HOMSLF(T1) ;GET BLOCK NUMBER OF HOME BLOCK
CAME T2,T3 ;IS IT WHAT IS EXPECTED?
RETBAD ;NO, NOT A CONSISTENT HOME BLOCK
MOVE T2,HOMFSN(T1) ;GET FILE SYSTEM TYPE
CAME T2,[BYTE (2)0(8)" "," "(2)0(8)"O","T"]
RETBAD ;NOT A TOPS-20 PACK
MOVE T2,HOMFSN+1(T1) ;GET CHARACTERS 5-8 OF TYPE
MOVE T3,HOMFSN+2(T1) ;GET CHARACTERS 9-12 OF TYPE
CAMN T2,[BYTE (2)0(8)"S","P"(2)0(8)"2","-"]
CAME T3,[BYTE (2)0(8)" ","0"(2)0(8)" "," "]
RETBAD ;NOT A TOPS-20 PACK
RETSKP ;HOME BLOCK IS OK
SUBTTL CPYH1/CPYH2 - Correct one incorrect Home Block
;CPYH1/CPYH2 - CORRECT ONE INCORRECT HOME BLOCK
;AND WRITE THE CORRECTED BLOCK ON THE DISK
;CALLED FROM MSTR JSYS
;
;ACCEPTS: T1/ FLAGS,,VIRTUAL ADDRESS OF PAGE CONTAINING HOME BLOCKS
; T2/ PHYSICAL ADDRESS OF PAGE CONTAINING HOME BLOCKS
; T3/ CKU NUMBERS FOR THIS PACK
; IF A MESSAGE IS REQUESTED, ALSO:
; P4/ SDBUDB POINTER FOR THIS UNIT
; P5/ STRUCTURE NUMBER
; CALL CPYH1/CPYH2
;RETURNS: +1 ERROR WRITING THE HOME BLOCK
; +2 SUCCESS, GOOD HOME BLOCK COPIED OVER BAD ONE
CPYH1:: TDZA T4,T4 ;INDICATE COPYING PRIMARY TO SECONDARY
CPYH2:: SETOM T4 ;INDICATE COPYING SECONDARY TO PRIMARY
ASUBR <CPHVIR,CPHPHY,CPHCKU> ;STORE INPUT ARGUMENTS
STKVAR <CPHDIR,CPHLOC> ;ALLOCATE SPACE FOR DIRECTION OF TRANSFER FLAG
MOVEM T4,CPHDIR ;SAVE DIRECTION OF TRANSFER
TXNN T1,MI%MSG ;MESSAGE DESIRED ?
JRST CPYH10 ;NO, GO COPY THE GOOD HOME BLOCK
HRRZ T3,CPHVIR ;POINT TO START OF HOME BLOCK 1
HRROI T1,[ASCIZ/% Copying primary HOME block to secondary on /]
SKIPE CPHDIR ;REALLY COPYING SECONDARY TO PRIMARY ?
JRST [ HRROI T1,[ASCIZ/% Copying secondary HOME block to primary on /]
ADDI T3,HBLEN ;POINT TO START OF HOME BLOCK 2
JRST .+1]
MOVEM T3,CPHLOC ;SAVE ADDRESS OF GOOD HOME BLOCK
CALL FSIPSO ;OUTPUT INITIAL PART OF MESSAGE
MOVE T3,CPHLOC ;POINT TO CORRECT HOME BLOCK
MOVE T1,HOMSNM(T3) ;GET NAME OF STRUCTURE
CALL FSI6TY ;PRINT NAME OF STRUCTURE
HRROI T1,[ASCIZ/ unit /] ;[7.1230]
CALL FSIPSO ;PRINT 'UNIT'
MOVE T3,CPHLOC
HRRZ T1,HOMLUN(T3) ;GET UNIT NUMBER
CALL FSIOTY ;PRINT THE UNIT NUMBER
HRROI T1,CRLF ;[7.1230] Point to CRLF
CALL FSIPSO ;OUTPUT END OF MESSAGE
;...
; HERE TO DO THE ACTUAL COPY
CPYH10: HRRZ T1,CPHVIR ;GET VIRTUAL ADDRESS OF FIRST HOME BLOCK
MOVE T3,[HM2BLK,,HM1BLK] ;GET BLOCK NUMBERS OF OTHER,,THIS HOME BLOCK
MOVEI T4,(T1) ;GET VIRTUAL ADDRESS OF FIRST HOME BLOCK
HRLI T1,HBLEN(T1) ;GET SOURCE ADDRESS FOR COPY
SKIPE CPHDIR ;COPYING SECONDARY TO PRIMARY ?
JRST CPYH20 ;YES, GO SET UP TERMINATING ADDRESS
HRLI T1,(T4) ;NO, GET SOURCE ADDRESS
HRRI T1,HBLEN(T4) ;GET DESTINATION ADDRESS
MOVS T3,T3 ;SWAP THIS,,OTHER HOME BLOCK NUMBERS
ADDI T4,HBLEN ;POINT TO SECOND HOME BLOCK
CPYH20: MOVEI T2,(T1) ;GET BASE FOR TERMINATING ADDRESS
BLT T1,HBLEN-1(T2) ;COPY GOOD HOME BLOCK
MOVSM T3,HOMHOM(T4) ;SAVE THIS,,OTHER BLOCK NUMBERS
HRRZM T3,HOMSLF(T4) ;SAVE THIS BLOCK NUMBER
; NOW WRITE OUT THE CORRECTED HOME BLOCK
HRRZ T1,CPHVIR ;GET VIRTUAL ADDRESS OF HOME BLOCKS
SKIPN CPHDIR ;WRITING OUT FIRST HOME BLOCK?
CALL SWPHOM ;NO, SWAP THEM SO PAGE STARTS WITH SECOND ONE
HRRZ T1,T3 ;GET SECTOR NUMBER
MOVE T2,[1B0+DOP%WR+DOP%PS+HBLEN] ;CHANNEL+UNIT, WR+DOP%PSITE, ONE HOME BLOCK
MOVE T3,CPHPHY ;GET PHYSICAL ADDRESS OF FIRST HOME BLOCK
MOVE T4,CPHCKU ;GET CKU VALUE FOR UNIT
CALL UDSKIO ;WRITE THE CORRECTED HOME BLOCK
MOVE T4,T1 ;SAVE RESULT
HRRZ T1,CPHVIR ;GET BACK VIRTUAL ADDRESS OF HOME BLOCKS
SKIPN CPHDIR ;DID WE SWAP THEM?
CALL SWPHOM ;YES, SWAP THEM BACK
JUMPN T4,R ;IF ERROR, RETURN FAILURE
RETSKP ;RETURN SUCCESS
SUBTTL WRTHOM - Write all Home Blocks in Public Structure
;WRTHOM - WRITE ALL HOME BLOCKS IN PUBLIC STRUCTURE
;ASSUMES THAT HOMTAB IS SET UP FOR THE PUBLIC STR
; CALL WRTHOM
;RETURNS +1: ERROR ON WRITE
; +2: HOME BLOCKS WRITTEN OK
;HOMTAB IS INDEXED BY LOGICAL UNIT WITHIN STRUCTURE, CONTAINS
;THE CHANNEL, CONTROLLER, AND UNIT NUMBERS OF THE UNIT (CKU VALUE)
;FSINPK/NUMBER OF UNITS IN STRUCTURE
WRTHOM: SAVEP
MOVE T1,FSIFLG ;GET FLAGS
MOVE T2,FSINAM ;GET STRUCTURE NAME
HRR T3,FSINPK ;GET NUMBER OF UNITS IN STRUCTURE
HRL T3,FSIUSZ ;GET UNIT SIZE
MOVEI T4,HOMPGA ;GET ADDRESS OF HOME BLOCK PAGE
HRL T4,FSISWP ;GET # OF PAGES FOR SWAPPING
MOVE P1,FSITYP ;GET ADDRESS OF DISK SIZE DATA
MOVE P2,FSISER ;GET CPU SERIAL NUMBER
CALL SETHOM ;GO SETUP HOME BLOCK PAGE
CALL GETMID ;GET THE MEDIA ID FOR THIS STR
MOVEM T1,HOMPGA+HOMMID ;SAVE THE MEDIA ID
MOVN P1,FSINPK ;SET UP LOOP COUNTER
HRLZS P1
SETZ P3, ;INITIALIZE ERROR COUNTER TO 0
WRTHO1: HRRM P1,HOMPGA+HOMLUN ;SET UP LOGICAL UNIT NUMBER
MOVEI T1,HM1BLK ;WRITE FIRST HOME BLOCK
MOVE T2,HOMTAB(P1) ;GET CKU NUMBER
CALL WRTHB
AOS P3 ;COUNT UP ERRORS
MOVSS HOMPGA+HOMHOM ;SWITCH POINTER TO HOME BLOCKS
MOVEI T1,HM2BLK ;THEN WRITE SECOND HOME BLOCK
MOVE T2,HOMTAB(P1) ;GET CKU NUMBER
CALL WRTHB
AOS P3 ;COUNT UP ERRORS
MOVSS HOMPGA+HOMHOM ;SWITCH POINTER BACK FOR FIRST HOME BLK
AOBJN P1,WRTHO1 ;LOOP BACK FOR ALL PACKS IN PUBLIC STR
JUMPG P3,R ;IF ERRORS, GIVE NON-SKIP RETURN
RETSKP ;OTHERWISE GIVE SKIP RETURN
SUBTTL WRTHB - Write a home block
;WRTHB - WRITE A HOME BLOCK
;ASSUMES THAT HOMPG IS SET UP WITH A HOME BLOCK IMAGE
;ACCEPTS IN T1/ BLOCK # OF THIS HOME BLOCK
; T2/ CKU NUMBER
; P1/ LOGICAL PACK #
; CALL WRTHB
;RETURNS +1: ERROR ON WRITE
; +2: OK
WRTHB: MOVEM T1,HOMPGA+HOMSLF ;SAVE POINTER TO SELF
MOVE T4,T2 ;SET UP FOR CALL TO UDSKIO
MOVEI T2,HBLEN ;ONLY WRITE THE HOME BLOCK
TLO T2,(1B0+DOP%WR+DOP%PS) ;MARK THAT A WRITE IS TO BE DONE
MOVE T3,FSIPPA ;GET PHYSICAL ADDRESS
CALL UDSKIO ;WRITE OUT THE HOME BLOCK
JUMPE T1,RSKP ;NO ERRORS IF T1=0
HRROI T1,[ASCIZ/
? Error writing Home Block on logical unit /]
CALL FSIPSO
MOVEI T1,0(P1) ;GET UNIT NUMBER
CALL FSIOTY ;TYPE IT OUT
HRROI T1,CRLF ;[7.1230] Point to a CR-LF
CALL FSIPSO ;END WITH A CR-LF
RET ;AND EXIT
SUBTTL SWPHOM - Swap the Home or BAT blocks
;SWPHOM - SWAP THE HOME OR BAT BLOCKS IN A PAGE. NECESSARY BECAUSE
;THE DISK WRITE HAS TO BEGIN AT THE FIRST WORD OF A PAGE FOR RP20'S.
;CALL:
; T1/ VIRTUAL ADDRESS OF THE PAGE HOLDING THE HOME OR BAT BLOCKS
;RETURNS:
; +1: ALWAYS, WITH THE TWO HOME OR BAT BLOCKS SWAPPED.
;THIS ROUTINE TRASHES THE REMAINDER OF THE PAGE AFTER THE TWO BLOCKS.
SWPHOM: MOVSI T2,0(T1) ;COPY FROM FIRST BLOCK
IORI T2,HBLEN*2(T1) ;TO SECOND HALF OF PAGE
BLT T2,HBLEN*3-1(T1) ;SAVE FIRST HOME BLOCK AWAY
MOVSI T2,HBLEN(T1) ;NOW POINT AT SECOND HOME BLOCK
IORI T2,0(T1) ;AND TOP OF PAGE
BLT T2,HBLEN-1(T1) ;COPY SECOND HOME BLOCK UP ONTO FIRST ONE
MOVSI T2,HBLEN*2(T1) ;NOW WANT TO COPY BACK FIRST HOME BLOCK
IORI T2,HBLEN(T1) ;ON TOP OF OLD SECOND HOME BLOCK
BLT T2,HBLEN*2-1(T1) ;DO IT
RET ;DONE
;...
SUBTTL SETHOM - Setup first Home Block on a unit
;SETHOM - SETUP FIRST HOME BLOCK ON A UNIT
; (EXCEPT FOR LOGICAL UNIT # IN HOMLUN)
;
; ACCEPTS IN T1/ FLAGS
; T2/ STRUCTURE NAME
; T3/ UNIT SIZE,,NUMBER OF UNITS IN STRUCTURE
; T4/ # OF PAGES FOR SWAPPING,,ADDRESS OF HOME BLOCK PAGE
; P1/ ADDRESS OF DISK SIZE TABLE
; P2/ SERIAL NUMBER OF CPU THIS STRUCTURE BOOTS
; CALL SETHOM
; RETURNS: +1 ALWAYS, FIRST HOME BLOCK SET UP
SETHOM::ASUBR <STHFLG,STHSTR,STHUNI,STHADR>
HRLZ T1,T4 ;GET START ADDRESS OF HOME BLOCK PAGE
HRRI T1,1(T4) ;GET DESTINATION ADDRESS
HRRZS T4 ;GET ADDRESS ONLY
SETZM (T4) ;ZERO THE PAGE FIRST
BLT T1,HBLEN-1(T4) ;...
MOVSI T1,'HOM' ;SET UP THE HOME BLOCK
MOVEM T1,HOMNAM(T4) ;SIXBIT /HOM/
MOVE T1,SECUNT(P1) ;GET NUMBER OF SECTORS PER UNIT
MOVEM T1,HOMSIZ(T4) ;TO THE HOME BLOCK
MOVE T1,STHSTR ;GET STR NAME
MOVEM T1,HOMSNM(T4)
HRLZ T1,STHUNI ;GET TOTAL # OF PACKS IN STR
MOVEM T1,HOMLUN(T4) ;LOGICAL UNITS GET SET UP LATER
MOVE T1,[HM1BLK,,HM2BLK]
MOVEM T1,HOMHOM(T4) ;SET UP POINTERS TO HOME BLOCKS
MOVE T1,[BYTE (2)0(8)" "," "(2)0(8)"O","T"]
MOVEM T1,HOMFSN(T4) ;SET UP NAME OF SYSTEM PACKS
MOVE T1,[BYTE (2)0(8)"S","P"(2)0(8)"2","-"]
MOVEM T1,HOMFSN+1(T4)
MOVE T1,[BYTE (2)0(8)" ","0"(2)0(8)" "," "]
MOVEM T1,HOMFSN+2(T4)
MOVE T1,STHFLG ;SET UP FLAGS
MOVEM T1,HOMFLG(T4)
MOVE T1,DIDSCI ;SET UP POINTER TO INDEX BLOCK
MOVEM T1,HOMRXB(T4)
MOVE T1,DIDSCJ ;SET UP POINTER TO BACKUP ROOT-DIR
MOVEM T1,HOMBXB(T4)
HLRZ T1,STHADR ;GET # OF PAGES TO ALLOCATE FOR SWAPPING
MOVE T2,STHUNI ;GET # OF UNITS IN THIS STRUCTURE
MOVE T3,P1 ;GET POINTER TO DSKSIZ TABLE
CALL CMPSWP ;COMPUTE # OF PAGES FOR SWAPPING ON THIS UNIT
;...
MOVEM T1,HOMP4S(T4) ;PUT # OF PAGES FOR SWAPPING IN HOME BLK
IDIV T1,PAGCYL(P1) ;GET NUMBER OF CYLINDERS OF SWAP SPACE
HLRZ T2,STHUNI ;GET UNIT SIZE IN CYLINDERS
SUB T2,T1 ;COMPUTE STARTING CYLINDER FOR SWAPPING
LSH T2,-1 ;SO THAT SWAP SPACE STRADDLES THE CENTER
MOVEM T2,HOMFST(T4) ;PUT ADR OF FIRST SWAPPING TRACK IN HB
MOVEI T1,CODHOM ;SET UP SPECIAL CODE
MOVEM T1,HOMCOD(T4)
MOVE T1,CYLUNT(P1) ;GET TOTAL CYLINDERS PER UNIT
HRRZ T2,STHUNI ;GET NUMBER OF UNITS IN STRUCTURE
IMUL T1,T2 ;COMPUTE TOTAL FOR STRUCTURE
MOVEM T1,HOMBTB(T4) ;SAVE AS SIZE OF TOP HALF OF BIT TABLE
MOVEM P2,HOMSER(T4) ;STORE CPU SERIAL NUMBER
RET ;RETURN
SUBTTL MODHOM - Modify the Home Blocks
;MODHOM - MODIFY THE HOME BLOCKS
;ACCEPTS:
; T1/ STRUCTURE NUMBER
; T2/ OFFSET IN HOME BLOCKS OF WORD TO CHANGE
; T3/ DATA TO GO INTO THAT WORD
; T4/ MASK OF BITS TO CHANGE
; CALL MODHOM
;RETURNS +1: FAILED TO UPDATE THE HOME BLOCK
; +2: SUCCEEDED
;THIS ROUTINE READS BOTH HOME BLOCKS, CHANGES ONE WORD IN THEM, AND
;REWRITES THE MODIFIED HOME BLOCKS. IT DOES NOT CHECK THEM FOR
;CORRECTNESS
SWAPCD
MODHOM::
SAVEQ
STKVAR <MODHOF,MODHDA,MODHVA,MODHPA,MODHST,MODHCU,MODMSK>
MOVEM T1,MODHST ;SAVE STRUCTURE NUMBER
MOVEM T2,MODHOF ;SAVE THE OFFSET
MOVEM T3,MODHDA ;SAVE THE DATA
MOVEM T4,MODMSK ;SAVE MASK
NOINT ;NO INTERRUPTS WHILE PAGE IS ASSIGNED
CALL ASGPAG ;GET A PAGE IN JSB FREE SPACE
RETBAD (,<OKINT>) ;COULDN'T GET A PAGE
MOVEM T1,MODHVA ;SAVE STARTING ADDRESS OF PAGE (VIRTUAL)
CALL MLKMA ;LOCK DOWN A PHYSICAL PAGE TO CORRESPOND
; TO THIS ADDRESS
LSH T1,PGSFT ;CONVERT ITS PHYSICAL PAGE NO. TO AN ADDRESS
MOVEM T1,MODHPA ;SAVE STARTING ADDRESS OF PAGE (PHYSICAL)
MOVE T2,MODHST ;GET STRUCTURE NUMBER
MOVE T2,STRTAB(T2) ;POINT TO SDB FOR THIS STRUCTURE
LOAD Q1,STRNUM,(T2) ;GET NUMBER OF UNITS IN STRUCTURE
MOVNS Q1 ;MAKE IT NEGATIVE
HRLZS Q1 ;LEFT HALF OF AOBJN POINTER
HRRI Q1,SDBUDB(T2) ;Q1/(-COUNT,,SDBUDB ADDRESS)
SETZM Q2 ;INITIALIZE ERROR FLAG TO NO ERRORS
;...
MODHO1: MOVE T3,0(Q1) ;GET ADDRESS OF UDB FOR THIS LOCICAL UNIT
CALL FNDCH1 ;CONVERT UDB ADDRESS INTO CKU NUMBER
MOVEM T1,MODHCU ;SAVE THE CKU VALUE
MOVE T2,MODHPA ;T2/PHYSICAL ADDRESS OF PAGE TO READ INTO
MOVEI T3,HM1BLK ;T2/SECTOR NUMBER OF FIRST HOME BLOCK
MOVE T4,MODHVA ;T4/VIRTUAL ADDRESS OF PAGE TO READ INTO
CALL REDHOM ;READ BOTH HOME BLOCKS INTO PAGE POINTED
; TO BY T4
JRST [ SETOM Q2 ;INDICATE ERROR
JRST MODHO5] ;GO CLEAN UP AND QUIT
MOVE T1,MODHOF ;GET THE OFFSET TO BE CHANGED
ADD T1,MODHVA ;POINT TO THE ACTUAL WORD
MOVE T2,0(T1) ;GET ORIGINAL DATA FROM HOMEBLOCK
TDZ T2,MODMSK ;CLEAR BITS BEING CHANGED
MOVE T3,MODHDA ;GET NEW DATA
AND T3,MODMSK ;KEEP ONLY BITS BEING CHANGED
IOR T2,T3 ;COLLECT NEW VERSION OF DATA WORD FOR HOMEBLOCK
MOVEM T2,0(T1) ;STORE INTO FIRST HOME BLOCK
MOVE T2,HBLEN(T1) ;GET ORIGINAL DATA FROM SECOND HOMEBLOCK
TDZ T2,MODMSK ;CLEAR BITS BEING CHANGED
IOR T2,T3 ;COLLECT NEW VERSION OF DATA WORD FOR HOMEBLOCK
MOVEM T2,HBLEN(T1) ;STORE INTO SECOND HOME BLOCK
MOVE T1,MODHPA ;T1/PHYSICAL ADDRESS OF WORK PAGE
MOVE T2,MODHCU ;T2/CKU NUMBERS FOR THIS LOGICAL UNIT
MOVE T3,MODHVA ;GET VIRTUAL ADDRESS
CALL UPDHOM ;UPDATE HOME BLOCKS ON THIS UNIT
JRST [ SETOM Q2 ;NOTE FAILURE
JRST MODHO5] ;GO CLEAN UP AND QUIT
MODHO3: AOBJN Q1,MODHO1 ;LOOP THROUGH ALL UNITS IN STRUCTURE
MODHO5: MOVE T1,MODHPA ;T1/PHYSICAL ADDRESS OF WORK PAGE
LSH T1,-PGSFT ;CONVERT TO PAGE NUMBER
CALL MULKCR ;UNLOCK IT FROM CORE
MOVE T1,MODHVA ;T1/VIRTUAL ADDRESS OF WORK PAGE
CALL RELPAG ;RELEASE THE WORK PAGE
OKINT ;INTERRUPTS ARE OK NOW
SKIPE Q2 ;WERE THERE ANY ERRORS?
RETBAD ;YES. TAKE ERROR RETURN
RETSKP ;NO. TAKE SUCCESS RETURN
SUBTTL UPDHOM - Update the Home Blocks
;UPDHOM - UPDATE THE HOME BLOCKS
;
;ACCEPTS:
; T1/ PHYSICAL ADDRESS OF START OF PAGE WHERE HOME BLOCK DATA
; IS STORED
; T2/ CKU NUMBERS FOR THE PACK TO BE WRITTEN
; T3/ VIRTUAL ADDRESS OF THE PAGE WITH THE HOME BLOCKS
;
; CALL UPDHOM
;
;RETURNS +1: FAILED
; +2: SUCCEEDED
;
;THIS ROUTINE WRITES BOTH HOME BLOCKS FOR A SINGLE UNIT. THE CALLER
;MUST HAVE SET UP IN THE PAGE POINTED TO BY T1 THE DATA FOR BOTH HOME
;BLOCKS IN 2 CONTIGUOUS BLOCKS OF LENGTH HBLEN EACH. CALLING REDHOM
;WILL CAUSE THE PAGE TO BE SET UP THIS WAY
UPDHOM: SAVEQ
ASUBR <UPDHPA,UPDHCU,UPDVPA>
DMOVE T3,T1 ;MOVE ARGUMENTS TO T3 AND T4 FOR UDSKIO
MOVEI T1,HM1BLK ;T1/SECTOR NUMBER OF FIRST HOME BLOCK
MOVE T2,[1B0+DOP%WR+DOP%PS+HBLEN] ;T2/WRITE, ADDRESS IS CKU NUMBER, LENGTH
CALL UDSKIO ;WRITE THE FIRST HOME BLOCK TO THE DISK
MOVEM T1,Q1 ;SAVE ERROR INDICATOR FROM UDSKIO
MOVE T1,UPDVPA ;GET VIRTUAL ADDRESS OF HOME BLOCKS
CALL SWPHOM ;SWAP THE HOME BLOCKS
MOVEI T1,HM2BLK ;T1/SECTOR NUMBER OF SECOND HOME BLOCK
MOVE T2,[1B0+DOP%WR+DOP%PS+HBLEN] ;T2/WRITE, ADDRESS IS CKU NUMBER, LENGTH
MOVE T3,UPDHPA ;T3/PHYSICAL ADDRESS OF START OF PAGE
MOVE T4,UPDHCU ;T4/ CKU VALUE
CALL UDSKIO ;WRITE THE SECOND HOME BLOCK TO THE DISK
IORM T1,Q1 ;REMEMBER ERROR IF ANY
MOVE T1,UPDVPA ;GET BACK VIRTUAL ADDRESS
CALL SWPHOM ;SWAP BACK THE HOME BLOCKS
SKIPE Q1 ;ANY ERROR FROM EITHER WRITE?
RETBAD ;YES. TAKE ERROR RETURN
RETSKP ;NO ERRORS. TAKE SUCCESS RETURN
SUBTTL CHKBAT - Check all BAT blocks on a structure
;CHKBAT - READ ALL BAT BLOCKS ON A GIVEN STRUCTURE AND
;PERFORM A QUICK CONSISTENCY CHECK FOR THE GIVEN STRUCTURE.
;IF THE PUBLIC STRUCTURE IS GIVEN, IT MARKS OFF IN THE SWAPPING
;SPACE BIT TABLE DISK ADDRESSES IN THE SWAPPING SPACE THAT ARE BAD
; CALL CHKBAT
;
;ACCEPTS:
; T1/ STRUCTURE NUMBER
; T2/ VIRTUAL ADDRESS OF PAGE TO READ BAT BLOCKS INTO
; T3/ FLAGS
; CALL CHKBAT
;RETURNS: +1 ALWAYS WITH APPROPRIATE WARNINGS AND MESSAGES OUTPUT
; ON THE CTY AND LOGGED IN THE ERROR FILE
;USE OF P REGISTERS:
; P1/ PHYSICAL ADDRESS OF BAT BLOCK PAGE
; P4 /(-NUMBER PACKS,,SDBUDB FOR CURRENT PACK)
; P5 /STRUCTURE NUMBER
RESCD(INIT)
CHKBAT::SAVEP ;GET SOME WORK SPACE
STKVAR <LSTBAT,CURBAT,CKBADR,CKBPAG,CKBNDX,CKBFLG,CKBDRA>
MOVEM T2,CKBADR ;SAVE VIRTUAL ADDRESS OF BAT BLOCK PAGE
MOVEM T3,CKBFLG ;SAVE FLAGS
MOVE P5,A
MOVE T1,CKBADR ;GET VIRTUAL ADDRESS OF BAT BLOCK PAGE
CALL MLKMA ;LOCK IT DOWN
MOVEM A,CKBPAG ;SAVE PHYSICAL PAGE NUMBER
MOVEI P1,(T1) ;GET PHYSICAL PAGE NUMBER
LSH P1,PGSFT ;SAVE CORE ADDRESS
BATSTR: SKIPN P4,STRTAB(P5) ;THIS STRUCTURE EXIST?
JRST NXTUN1 ;NO. GO TO NEXT
MOVN T1,SDBNUM(P4) ;GET -NUMBER OF PACKS
HRLI P4,0(T1) ;FORM AOBJN POINTER
HRRI P4,SDBUDB(P4) ;AND POINT TO FIRST UDB
;LOOP THROUGH PACKS
; P4/(NEGATIVE COUNT,,SDBUDB)
DOUNIT: MOVE T1,CKBADR ;GET VIRTUAL ADDRESS OF BAT BLOCK PAGE
MOVE T2,P1 ;GET PHYSICAL ADDRESS OF BAT BLOCK PAGE
MOVE T3,CKBFLG ;GET FLAGS
HRRZ T4,(P4) ;GET ADDRESS OF UDB
CALL DOPACK ;GO CHECK THE BAT BLOCKS ON ONE UNIT
JRST NXTUN1 ;DON'T TRY TO MARK OFF SWAPPING SPACE
;..
;ROUTINE TO MARK OFF SWAPPING SPACE WHICH HAS BEEN RECORDED BAD
;AND TO MOVE TO THE NEXT LOGICAL UNIT
NXTUNT: JUMPN P5,NXTUN1 ;IS THIS THE PUBLIC STRUCTURE
MOVE A,CKBADR ;GET VIRTAUL ADDRESS OF FIRST BAT BLOCK
CALL BATSPC ;FOUND SPACE IN BLOCK
MOVEI P3,MAXBFR(A) ;FIND NUMBER USED
JUMPE P3,NXTUN1 ;NONE HERE
LSH P3,-1 ;CALCULATE NUMBER OF PAIRS
MOVE C,CKBADR ;GET VIRTUAL ADDRESS OF FIRST BAT BLOCK
ADDI C,BAT1P ;FIRST BAD ONE
DOBADS: LOAD A,BADT,(C) ;GET TYPE OF THIS PAIR
SKIPN A ;OLD?
JRST [ LOAD A,ADD18,(C) ;YES.
JRST GTADR] ;GO INLINE
LOAD A,ADD27,(C) ;NO. GET NEW TYPE
GTADR: LOAD B,BATNB,(C) ;NUMBER OF BAD ONES
ADD B,A ;CALCULATE LAST SECTOR
MOVEM B,LSTBAT ;SAVE IT
DOBDRM: MOVEM A,CURBAT ;SAVE CURRENT AS WELL
MOVE D,STRTAB(P5) ;GET SDB
MOVE B,SDBTYP(D) ;POINT TO SIZE DATA FOR THIS DISK TYPE
MOVE B,SECPAG(B) ;GET NUMBER OF SECTORS PER PAGE
SUBI B,1 ; -1
ANDCM A,B ;ROUND DOWN TO NEAREST PAGE
SUB A,SDBFSS(D) ;SEE IF WITHIN SWAPPING BOUNDS
SKIPL A ;IS IT?
CAML A,SDBNSS(D) ;?
JRST NOTER ;NO
MOVEM C,CKBNDX ;SAVE BAD PAIR INDEX
MOVE CX,SDBTYP(D) ;GET ADDR OF DSKSIZ TABLE
IDIV A,SECCYL(CX) ;GET TRACK,,SECTOR WITHIN SWAP SPACE
IMUL A,SDBNUM(D) ;COMPUTE INTERLEAVE BASED ON SIZE OF STR
MOVEI C,-SDBUDB(P4) ;COMPUTE PACK # IN STR
SUB C,D ; "
ADD A,C ;ADD IN PACK # FOR PHYSIO
IMUL A,SECCYL(CX) ;COMPUTE CYLINDER # IN SWAP SPACE
ADD A,B ;ADD IN SECTOR #
TXO A,DRMOB ;INDICATE AN OVERFLOW ADDRESS
MOVEM A,CKBDRA ;SAVE ADDRESS TO BE ASSIGNED
;...
CALL DRMASA ;ASSIGN DRUM ADDRESS
JRST [ MOVE C,STRTAB+PSNUM ;POINT TO SDB FOR PS (ONLY CASE
LOAD C,STRNAM,(C) ; IN WHICH WE GET HERE)
SKIPE T1 ; OUT-OF-RANGE?
BUG.(CHK,SWPASF,DSKALC,SOFT,<CHKBAT - Failed to assign bad swapping address>,<<T3,STRNAM>,<CKBDRA,ADDR>>,<
Cause: Swapping address was not assigned due to an illegal address or
an already assigned address.
Data: STRNAM - Sixbit Structure Name
ADDR - Address to be Assigned
>,,<DB%NND>) ;[7.1210]
JRST .+1]
MOVE C,CKBNDX ;RESTORE INDEX
NOTER: MOVE A,CURBAT ;GET BACK THIS ONE
MOVE D,STRTAB+PSNUM ;POINT TO SDB FOR PUBLIC STRUCTURE
MOVE B,SDBTYP(D) ;POINT TO SIZE DATA FOR THIS DISK TYPE
ADD A,SECPAG(B) ;GET TP NEXT ONE
CAMG A,LSTBAT ;STILL WITHIN THE REGION?
JRST DOBDRM ;YES. GO DO IT
ADDI C,2 ;NEXT PAIR
SOJG P3,DOBADS ;DO ALL PAIRS
NXTUN1: AOBJN P4,DOUNIT ;DO ALL PACKS
MOVE A,CKBPAG ;GET PHYSICAL PAGE NUMBER OF BAT BLOCK PAGE
CALLRET MULKCR ;UNLOCK THE PAGE AND RETURN
SUBTTL DOPACK - Check the BAT blocks on a single unit
;DOPACK - CHECK THE BAT BLOCKS ON A SINGLE UNIT
;
; ACCEPTS IN T1/ VIRTUAL ADDRESS OF BAT BLOCK PAGE
; T2/ PHYSICAL ADDRESS OF BAT BLOCK PAGE
; T3/ FLAGS
; MI%MSG - TYPE MESSAGES ON CTY IF ON
; MS%NFB - DO NOT FIX BAD BAT BLOCKS
; T4/ ADDRESS OF UDB FOR THIS UNIT
; CALL DOPACK
; RETURNS: +1 FAILED, BAT BLOCKS BAD (ONLY TAKEN IF MS%NFB WAS ON)
; +2 SUCCESS, BAT BLOCKS GOOD OR REPAIRED IF BAD
DOPACK: SAVEP
ASUBR <PAKVIR,PAKPHY,PAKFLG,PAKUDB>
MOVEI P4,PAKUDB ;SET UP POINTER TO ADDRESS OF UDB
CALL SETBAT ;SET NO BAT BIT
CALL FNDCHN ;GO FIND THE CKU NUMBERS FOR THIS PACK
MOVE P2,T1 ;SAVE THE PHYSICAL ID
MOVE T3,PAKVIR ;VIRTUAL ADDRESS TO READ INTO
MOVE T2,PAKPHY ;CORE ADDRESS
CALL GETBAT ;GET THE BAT BLOCKS INTO CORE
MOVE T2,T1 ;MOVE THE MASK
TLNN T2,(1B0) ;IS ONE OK?
JRST ONEBAD ;NO. HOPE 2 IS OK!
TLNE T2,(1B1) ;IS 2 OK?
JRST CMPBAT ;YES. GO COMPARE BAT BLOCKS
TWOBAD: MOVE T1,PAKFLG ;GET FLAGS
TXNE T1,MS%NFB ;FIX THE BAD BAT BLOCK ?
RET ;NO, RETURN FAILURE (BAT BLOCK BAD)
MOVE T2,PAKVIR ;GET VIRTUAL ADDRESS OF FIRST BAT BLOCK
MOVE T3,PAKPHY ;PHYSICAL CORE ADDRESS
CALL CPY1 ;COPY PRIMARY
JRST NOBATS ; ASSUME NONE THERE
JRST CHKFUL
;PRIMARY BAT BLOCK IS INCORRECT
ONEBAD: TLNN T2,(1B1) ;IS THE BACKUP OK?
JRST NOBATS ;NO. WE LOSE
MOVE T1,PAKFLG ;YES, GET FLAGS
TXNE T1,MS%NFB ;FIX THE BAD BAT BLOCK ?
RET ;NO, RETURN FAILURE (BAD BAT BLOCK)
MOVE T2,PAKVIR ;GET ADDRESS OF BAT BLOCKS
MOVE T3,PAKPHY ;PHYSICAL CORE ADDRESS
CALL CPY2 ;COPY SECONDARY TO PRIMARY BAT BLOCK
JRST NOBATS ; ASSUME NONE THERE
;...
; HERE TO COMPARE THE TWO BAT BLOCKS
CMPBAT: MOVE T1,PAKVIR ;GET ADDRESS OF FIRST BAT BLOCK
CALL BATCMP ;COMPARE THE TWO BLOCKS
SKIPA ;DIDNT MAKE IT
JRST CHKFUL ;THEY COMPARE!
NOCMPR: MOVE T1,PAKFLG ;GET FLAGS
TXNN T1,MI%MSG ;MESSAGE REQUESTED ?
JRST TWOBAD ;NO, GO ON
HRROI T1,[ASCIZ /%BAT blocks do not compare on /]
CALL FSIPSO
CALL UNTSTR ;OUTPUT STRUCTURE/UNIT MESSAGE
HRROI T1,CRLF ;[7.1230] Point to a CR-LF
CALL FSIPSO
JRST TWOBAD ;SO DO THE COPY
CHKFUL: CALL CLRBAT ; CLEAR BAT BIT
MOVE T1,PAKVIR ;GET ADDRESS OF BAT BLOCKS
CALL BATSPC ;FOUND SPACE LEFT
JUMPN A,RSKP ;IF ROOM LEFT, GO ON
MOVE T1,PAKFLG ;GET FLAGS
TXNN T1,MI%MSG ;MESSAGE REQUESTED ?
RETSKP ;NO, RETURN SUCCESS
HRROI T1,[ASCIZ /%BAT block full on /]
CALL FSIPSO
CALL UNTSTR ;OUTPUT STRUCTURE/UNIT MESSAGE
HRROI T1,CRLF ;[7.1230] Point to a CR-LF
CALL FSIPSO ;FINISH IT OFF
RETSKP ;RETURN SUCCESS
;HERE IF UNIT DOES NOT HAVE CONSISTENT BAT BLOCKS
NOBATS: MOVE T1,PAKFLG ;GET FLAGS
TXNN T1,MI%MSG ;MESSAGES REQUESTED ?
JRST CREBAT ;NO, GO SEE IF NEW BAT BLOCKS ARE WANTED
MOVEI T1,"?" ;YES, GET FIRST CHARACTER OF ERROR MESSAGE
CALL FSIPBO ;OUTPUT INITIAL PART OF MESSAGE
CALL UNTSTR ;STRUCTURE/UNIT MESSAGE
HRROI T1,[ASCIZ / has no consistent BAT blocks
/]
CALL FSIPSO ;TELL HIM
CREBAT: MOVE T1,PAKFLG ;GET FLAGS
TXNE T1,MS%NFB ;FIX THE BAT BLOCKS ?
RETSKP ;NO, RETURN
XMOVEI P4,PAKUDB ;GET POINTER TO ADDRESS OF UDB
CALL FNDCHN ;GET CHANNEL, CONTROLLER, AND UNIT NUMBERS
MOVE T2,PAKVIR ;GET VIRTUAL ADDRESS FOR NEW BAT BLOCKS
MOVE T3,PAKPHY ;GET PHYSICAL ADDRESS FOR NEW BAT BLOCKS
SETZM T4 ;NO FLAGS
CALL MAKBAT ;MAKE A SET OF NEW BAT BLOCKS
RET ;FAILED, RETURN ERROR
RETSKP ;DONE, RETURN SUCCESS
SUBTTL UNTSTR - Routine to output structure/unit message
;UNTSTR - ROUTINE TO OUTPUT STANDARD STRUCTURE/UNIT MESSAGE
; P5/ STRUCTURE NUMBER
; P4/ SDBUDB POINTER
UNTSTR: HRRZ T1,STRTAB(P5) ;GET SDB POINTER
MOVE T1,SDBNAM(T1) ;GET IT'S NAME
CALL FSI6TY ;OUTPUT SIXBIT NAME
HRROI T1,[ASCIZ / unit /]
CALL FSIPSO ;OUTPUT LITERAL STRING
MOVE T1,(P4) ;GET ADDRESS OF UDB FOR THIS UNIT
HLRZ T1,UDBSTR(T1) ;GET UNIT NUMBER
CALLRET FSIOTY ;OUTPUT OCTAL NUMBER
SUBTTL BATCMP - Compare two BAT blocks
;BATCMP - THIS ROUTINE COMPARES TWO BAT BLOCKS
;ACCEPTS: T1/ VIRTUAL ADDRESS OF FIRST BAT BLOCK
;
;RETURNS: +1 NO COMPARE
; +2 COMPARE
BATCMP: MOVEI T3,HBLEN-1 ;DO 127 WORDS
MOVE T2,T1 ;GET ADDRESS OF FIRST BAT BLOCK
MOVEI T4,HBLEN(T2) ;GET ADDRESS OF SECOND BAT BLOCK
CMPR: MOVE T1,(T2) ;GET WORD FROM BLOCK 1
CAME T1,(T4) ;SAME IN BLOCK 2?
RET ;NO COMPARE
ADDI T2,1
ADDI T4,1 ;NEXT WORD
SOJG T3,CMPR ;DO ALL OF BLOCK
RETSKP ;EXACT
;ROUTINES TO SET AND CLEAR DSKBAT IN DSKSTS
;ACCEPTS P4/ SDBUDB POINTER
;
;RETURNS +1 ALWAYS
SETBAT: TDZA T1,T1 ; REMEMBER THIS ENTRY
CLRBAT: MOVEI T1,1 ; REMEMBER THIS ENTRY
MOVX T2,US.BAT ; THE BIT IN QUESTION
HRRZ T3,0(P4) ;GET UDB POINTER
XCT [ IORM T2,UDBSTS(T3) ;SET BIT
ANDCAM T2,UDBSTS(T3)](T1)
RET
SUBTTL GETBAT - Read the BAT blocks into a buffer
;GETBAT - READ THE BAT BLOCKS INTO A SPECIFED BUFFER
;ACCEPTS T1/ CKU NUMBER (CHAN, CTRL, AND UNIT NUMBERS)
; T2/ CORE ADDRESS
; T3/ VIRTUAL CORE ADDRESS
;RETURNS +1 ALWAYS WITH
; 1B0 0F T1 =1 IF PRIMARY IS IN AND GOOD
; 1B1 OF T1 =1 IF SECONDARY IS IN AND GOOD
GETBAT::SAVEP ;GET SOME REGS
MOVEI P1,(T3) ;SAVE VIRTUAL ADDRESS
MOVEI T3,BATBL1 ;LOCAL ADDRESS OF FIRST BAT BLOCK
MOVE P2,T1 ;SAVE DRIVE
MOVEI T4,(P1) ;VIRTUAL CORE ADDRESS
CALL REDHOM ;GET THE BAT BLOCKS IN CORE
JFCL ;IGNORE ERROR CONDITIONS
MOVEI T1,(P1) ;CORE ADDRESS
MOVEI T2,BATBL1 ;BLOCK NUMBER
SETZ P3,
CALL BATLOK ;VERIFY BLOCK IS GOOD
JRST CHKBT1 ;NOT. GO LOOK AT NEXT ONE
MOVSI P3,(1B0) ; SAY 1 IS GOOD
CHKBT1: MOVEI T1,(P1)
ADDI T1,HBLEN ;POIINT TO SECOND ONE
MOVEI T2,BATBL1+HM2BLK-HM1BLK ;IS AFTER NEXT BLOCK
CALL BATLOK ;GO CHECK SECOND BAT BLOCK
TDZA T1,T1 ; 2 IS BAD
MOVSI T1,(1B1) ;SAY 2 IS GOOD
IOR T1,P3 ;MASK THEM TOGETHER
RET
SUBTTL BATOUT - Write out the BAT blocks for a drive
;BATOUT - WRITE OUT THE BAT BLOCKS FOR A GIVEN PHYSICAL DRIVE
;ACCEPTS: T1/ CKU NUMBER OF UNIT
; T2/ VIRTUAL ADDRESS IN MEMORY OF BAT BLOCKS
; T3/ PHYSICAL CORE ADDRESS OF BAT BLOCKS
;RETURNS: +1 WRITE FAILED
; +2 OK
BATOUT::ASUBR <SVDRV,SVVADR,SVPADR,TEST1> ;SAVE CALLING ARGUMENTS
SETZM TEST1 ;ASSUME NONE WORKED
MOVE T2,[1B0+DOP%WR+DOP%PS+HBLEN] ;CONTROL WORD
MOVE T3,SVPADR ;GET PHYSICAL ADDRESS
MOVE T4,SVDRV ;GET CKU NUMBERS
MOVEI T1,BATBL1 ;BLOCK NUMBER
CALL UDSKIO ;OPERATE THE DISK
JUMPE T1,DO2B ;IF NO ERROR,GO ON
SETOM TEST1 ;MARK FAILURE
MOVE T1,SVDRV ;GET CKU NUMBER BACK
BUG.(CHK,NOBAT1,DSKALC,HARD,<Failed to write primary BAT BLOCK>,<<T1,CKUNUM>>,<
Cause: Primary BAT blocks were not written due to one of the following
errors:
1. Invalid unit or channel specified
2. Channel and unit is not a disk device
3. Hardware error
Data: CKUNUM - Channel, controller, and unit numbers (12 bits each)
>,,<DB%NND>) ;[7.1210]
;...
DO2B: MOVE T1,SVVADR ;GET VIRTUAL ADDRESS OF BAT BLOCKS
CALL SWPHOM ;SWAP THE BAT BLOCKS
MOVE T2,[1B0+DOP%WR+DOP%PS+HBLEN] ;CONTROL WORD
MOVE T3,SVPADR ;GET PHYSICAL ADDRESS AGAIN
MOVE T4,SVDRV ;GET CKU NUMBER
MOVEI T1,BATBL1+HM2BLK-HM1BLK ;ADDRESS OF SECONDARY BLOCK
CALL UDSKIO ;OPERATE DISK AGAIN
MOVE T4,T1 ;SAVE RESULT
MOVE T1,SVVADR ;RETRIEVE VIRTUAL ADDRESS OF BAT BLOCKS
CALL SWPHOM ;SWAP BAT BLOCKS BACK
SKIPN T4 ;NO ERRORS?
RETSKP ;YES. SAY IT IS GOOD THEN
MOVE T1,SVDRV ;GET CKU NUMBER
BUG.(CHK,NOBAT2,DSKALC,HARD,<Failed to write secondary BAT BLOCK>,<<T1,CKUNUM>>,<
Cause: Secondary BAT blocks were not written due to one of the following
errors:
1. Invalid unit or channel specified
2. Channel and unit is not a disk device
3. Hardware error
Data: CKUNUM - Channel, controller, and unit numbers (12 bits each)
>,,<DB%NND>) ;[7.1210]
SKIPE TEST1 ;DID IT WRITE THE PRIMARY?
RET ;NO. NONE GOOD THEN
RETSKP ;YES. ONE IS GOOD
SUBTTL BATLOK - Check the BAT block
;BATLOK - CHECK THE BAT BLOCK FOR CONSISTENCY
;ACCEPTS IN T1/ CORE ADDRESS OF BAT BLOCK
; T2/ BLOCK #
;RETURNS: +1 INCOSISTENT BAT BLOCK
; +2 CONSISTENT
BATLOK: MOVS T3,BATNAM(T1) ;GET THE NAME
CAIE T3,'BAT' ;IS IT A BAT BLOCK
RETBAD ;BAD
MOVE T3,BATCOD(T1) ;GET UNLIKELY CODE
CAIE T3,CODBAT ;GOOD?
RETBAD ;NO
MOVE T3,BATBLK(T1) ;GET BLOCK NUMBER
CAME T3,T2 ;CORRECT ONE?
RETBAD ;NO
RETSKP ;IT'S GOOD
SUBTTL FSIDIA - Diaglogue to define the public structure
;FSIDIA - DIAGLOGUE TO DEFINE THE PUBLIC STRUCTURE
; CALL FSIDIA
;RETURNS +1: ALWAYS,
; FLAGS SET IN STARTF INDICATING ANSWERS TO QUESTIONS
;THIS IS ALWAYS CALLED WHEN THE SYSTEM IS STARTED AT SYSLOD. IT ACCEPTS
;INFORMATION FROM THE USER AND WRITES THE HOME BLOCKS (IF REQUESTED)
;ON THE SPECIFIED PACKS, THUS CREATING A STRUCTURE. IT DOES NOT
;BUILD AN SDB FOR THE STRUCTURE
FSIDIA: MOVSI T1,-HOMTBL ;CLEAR OUT PHYSICAL DRIVE CORRESPONDENCE
SETOM HOMTAB(T1) ;FOR DETECTING MULTIPLE REFERENCES
AOBJN T1,.-1
SETZM FSIFLG ;[8819] Init flag word
HRROI T1,[ASCIZ/
[For additional information type "?" to any of the following questions.]
/]
CALL FSIPSO
;SEE IF USER WANTS TO REFRESH THE FILE SYSTEM
FSIDI0: SETOM FSIUSZ ;INDICATE UNIT SIZE UNKNOWN
HRROI T1,[ASCIZ/
Do you want to replace the file system on the system structure? /]
HRROI T2,[ASCIZ/
[This procedure removes all existing directories and files and creates
the minimum directories needed to bring up the system.]
/]
MOVEI T3,FSIYNO ;GET YES OR NO
CALL FSIASK ;GO ASK QUESTION AND GET ANSWER IN T1
JRST FSIDI0 ;ERROR, GO ASK AGAIN
SKIPN T1 ;WAS THE ANSWER YES?
JRST [ MOVX T4,MI%RFS ;NO. INDICATE NOT REFRESHING
ANDCAM T4,STARTF
MOVX T4,MI%RCN ; BUT RATHER MIGHT BE RECONSTRUCTING
IORM T4,STARTF ; FOR FILINI TO DETECT LATER
MOVE T2,DBUGSW ;IF DEBUGGING, ALLOW THEM TO REWRITE THE
CAIGE T2,2 ; THE HOME BLOCKS. OTHERWISE, ASSUME
RET ; THEY COULD DO THEMSELVES IN
JRST .+1]
SETOM FEFSIZ ;INDICATE SIZE OF FE FILE SYSTEM UNKNOWN
SETOM BOTSIZ ;[2609] BOOTSTRAP SIZE UNKNOWN
;...
;SEE IF USER WANTS TO REWRITE THE HOME BLOCKS
FSIDI4: HRROI T1,[ASCIZ/
Do you want to define the system structure? /]
HRROI T2,[ASCIZ/
[This will cause the home blocks to be rewritten. It should be done
only if the answer to the previous question was yes.]
/]
MOVEI T3,FSIYNO ;GET YES OR NO
CALL FSIASK ;ASK THE QUESTION AND GET THE ANSWER
JRST FSIDI4 ;FAILED. TRY AGAIN
JUMPE T1,R ;IF NO. DON'T REWRITE HOME BLOCKS
;USER WANTS TO REWRITE HOME BLOCKS. IF NOT ALSO REFRESHING FILE SYSTEM,
;PRINT WARNING BUT CONTINUE
MOVX T4,MI%HMB ;YES. INDICATE HOME BLOCKS ARE TO BE
IORM T4,STARTF ; REWRITTEN FOR FILINI TO DETECT LATER
MOVX T4,MI%RFS ;ARE WE REFRESHING THE FILE SYSTEM?
TDNE T4,STARTF
JRST FSIDI1 ;YES. OK THEN
HRROI T1,[ASCIZ/
WARNING: This is a dangerous procedure. It may cause inconsistency
in the structure.
/]
CALL FSIPSO ;OUTPUT THE WARNING
;FIND OUT WHAT PACKS ARE IN THE STRUCTURE
FSIDI1: HRROI T1,[ASCIZ/
How many packs are in this structure: /]
HRROI T2,[ASCIZ/
[Enter the decimal number of disk packs that compose this structure]
/]
MOVEI T3,FSIDEC ;GET DECIMAL NUMBER OF PACKS
CALL FSIASK ;GO ASK QUESTION AND GET ANSWER
JRST FSIDI1 ;ERROR, GO ASK QUESTION AGAIN
JUMPLE T1,[HRROI T1,[ASCIZ/? The answer must be greater than zero!
/]
CALL FSIPSO ;TYPE OUT COMPLAINT
JRST FSIDI1] ;GO ASK QUESTION AGAIN
MOVEM T1,FSINPK ;SAVE COUNT OF PACKS IN PUBLIC STR
MOVEM T1,FSIDIC ;SAVE THIS COUNT FOR ENSUING QUESTIONS
CAILE T1,HOMTBL ;IS THIS NUMBER TOO BIG?
JRST [ HRROI T1,[ASCIZ/? The monitor is not assembled to handle that many units!
/]
CALL FSIPSO ;TYPE OUT MESSAGE
JRST FSIDI1] ;ASK QUESTION AGAIN
;..
;..
;GET THE CHANNEL, CONTROLLER, AND UNIT FOR EACH LOGICAL UNIT IN THE STRUCTURE.
;STORE IN HOMTAB, INDEXED BY LOGICAL UNIT NUMBER
FSIDI2: MOVE T1,[POINT 7,FSIBLK] ;SET UP TO BUILD QUESTION STRING
MOVE T2,[POINT 7,[ASCIZ/
On which "CHANNEL,CONTROLLER,UNIT" is logical pack # /]]
CALL FSICPY ;COPY STRING TO TEMP BLOCK
MOVE T2,FSINPK ;CALCULATE NUMBER OF THIS UNIT
SUB T2,FSIDIC ;UNITS START AT 0, THEN 1, 2, ...
MOVEI T3,12 ;SET RADIX TO 10
CALL FSINST ;PUT PACK # IN QUESTION STRING
MOVE T2,[POINT 7,[ASCIZ/ mounted? /]]
CALL FSICPY ;FINISH BUILDING QUESTION STRING
HRROI T1,FSIBLK ;GET POINTER TO QUESTION STRING
MOVEI T2,FSICFG ;HELP MESSAGE ROUTINE
MOVEI T3,FSIDEC ;GET PHYSICAL CHANNEL #
CALL FSIASK ;ASK QUESTION AND GET ANSWER
JRST FSIDI2 ;ERROR, GO ASK QUESTION AGAIN
MOVEM T1,FSICHN ;SAVE CHANNEL NUMBER
CALL FSIDEC ;READ IN CONTROLLER NUMBER
JRST FSIDI2 ;ERROR, ASK AGAIN
MOVEM T1,FSICTL ;SAVE CONTROLLER NUMBER
CALL FSIDEC ;READ IN UNIT NUMBER
JRST FSIDI2 ;ERROR
MOVEM T1,FSIUNT ;SAVE UNIT NUMBER
MOVE T1,FSICHN ;GET CHANNEL NUMBER
MOVE T2,FSICTL ;CONTROLLER NUMBER
MOVE T3,FSIUNT ;AND UNIT NUMBER
CALL CHKCKU ;LOOK FOR THE SPECIFIED UNIT
SKIPA T2,T1 ;FAILED, HAVE TO SEE WHY
JRST FSIDE1 ;FOUND IT, PROCEED
;...
HRROI T1,[ASCIZ/? Can't find specified unit/] ;START WITH CATCH ALL
CAIN T2,MSTX14 ;INVALID CHANNEL?
HRROI T1,[ASCIZ/? Illegal channel number/]
CAIN T2,MSTX41 ;NO SUCH CHANNEL?
HRROI T1,[ASCIZ/? No such channel/]
CAIN T2,MSTX16 ;INVALID CONTROLLER?
HRROI T1,[ASCIZ/? Illegal controller number/]
CAIN T2,MSTX42 ;NO SUCH CONTROLLER?
HRROI T1,[ASCIZ/? No such controller/]
CAIN T2,MSTX15 ;ILLEGAL UNIT?
HRROI T1,[ASCIZ/? Illegal unit number/]
CAIN T2,DIAGX9 ;NO SUCH UNIT?
HRROI T1,[ASCIZ/? No such unit/]
CAIN T2,MSTX27 ;NOT A DISK?
HRROI T1,[ASCIZ/? Not a disk device/]
CALL FSIPSO ;GIVE THE MESSAGE
HRROI T1,[ASCIZ/.
/] ;FINAL CRLF
CALL FSIPSO ;GIVE THAT TOO
JRST FSIDI2 ;AND TRY AGAIN
;...
FSIDE1: MOVEM T1,FSIUDB ;REMEMBER UDB OF UNIT
MOVE T3,UDBSIZ(T1) ;GET ADDRESS OF SIZE DATA FOR THIS TYPE
MOVEM T3,FSITYP ;SAVE IT FOR WRTHOM
MOVE T2,CYLUNT(T3) ;GET NUMBER OF CYLINDERS
SKIPGE FSIUSZ ;UNIT SIZE SET YET?
MOVEM T2,FSIUSZ ;NO - SET IT
CAME T2,FSIUSZ ;CHECK IF SAME AS OTHER UNITS
JRST [ HRROI T1,[ASCIZ /? All disk units in a single structure must be the same size.
/]
CALL FSIPSO ;CHIDE USER
JRST FSIDI2] ;AND TRY AGAIN
IMUL T2,FSINPK ;CHECK IF A STRUCTURE THIS LARGE IS OK
MOVE T1,BTWCYL(T3) ; Get Bit words per cylinder
AOS T1 ; Add one word/cyl for Top of BTB
IMUL T2,T1 ; CYL/STR * BTB words/CYL = Size of BTB
CAMLE T2,BTBSIZ ; I.E,. ITS BIT TABLE ISN'T TOO BIG)
JRST [ HRROI T1,[ASCIZ /? You are attempting to define a structure which has more space than is supported.
/]
CALL FSIPSO
JRST FSIDI0] ;RESTART THE WHOLE AFFAIR
MOVE T1,FSICHN ;GET CHANNEL
MOVE T2,FSICTL ;CONTROLLER
MOVE T3,FSIUNT ;AND UNIT
CALL CKUPAK ;RETURN THE CKU NUMBER IN T1
MOVE T2,FSINPK ;GET LOGICAL PACK NUMBER AGAIN
SUB T2,FSIDIC ;...
MOVE T4,T2 ;LIMIT SEARCH TO PREVIOUS ENTRY
SOS T4
JUMPL T4,FSIDI8 ;NO PREVIOUS ENTRIES. NO DUPLICATION
MOVNS T4 ;GET NEGATIVE COUNT
HRLZS T4 ;T4/(-COUNT,,LOGICAL UNIT NUMBER)
FSIDI7: CAMN T1,HOMTAB(T4) ;HAS THIS PAIR BEEN SPECIFIED BEFORE?
JRST [ HRROI T1,[ASCIZ/? That drive was already assigned
/]
CALL FSIPSO ;TYPE OUT COMPLAINT
JRST FSIDI2] ;ASK QUESTION AGAIN
AOBJN T4,FSIDI7 ;NO. KEEP LOOKING
FSIDI8: MOVEM T1,HOMTAB(T2) ;STORE CKU NUMBER FOR THIS LOGICAL UNIT
SOSLE FSIDIC ;ANY MORE PACKS IN THE STR?
JRST FSIDI2 ;YES, ASK ABOUT THEM ALSO
;...
FSIDI3: HRROI T1,[ASCIZ/
Do you want the default swapping space? /]
MOVEI T2,FSIPSW ;T2/ROUTINE TO TYPE HELP TEXT
MOVEI T3,FSIYNO ;T3/ROUTINE TO GET YES OR NOT
CALL FSIASK ;ASK THE QUESTION
JRST FSIDI3 ;ERROR. GO ASK AGAIN
JUMPN T1,[ MOVE T1,NSWPGS
JRST FSIDI6]
;USER DOESN'T WANT THE DEFAULT. GET THE USER'S CHOICE
FSIDI5: HRROI T1,[ASCIZ/
How many pages for swapping? /]
HRROI T2,[ASCIZ/
[Enter the decimal number of pages to be allocated for the entire structure]
/]
MOVEI T3,FSIDEC ;READ A DECIMAL NUMBER
CALL FSIASK ;ASK THE QUESTION AND GET THE ANSWER
JRST FSIDI5 ;ERROR. ASK AGAIN
FSIDI6: MOVEM T1,FSISWP ;SAVE THE ANSWER
JUMPLE T1,FSIDI9 ;NEGATIVE IS ILLEGAL
CAIGE T1,^D2000 ;IS THIS ENOUGH SWAPPING SPACE?
JRST FSIDI9 ;NO. PS MUST HAVE ENOUGH
MOVE T1,FSIUDB ;T1/ UDB OF A UNIT
MOVE T2,FSINPK ;T2/NUMBER OF UNITS IN STRUCTURE
MOVE T3,FSISWP ;T3/NUMBER OF SWAPPING PAGES SPECIFIED
CALL CHKSWP ;SEE IF THIS ANSWER IS VALID
SKIPA ;INVALID. GO COMPLAIN
JRST FSID10 ;VALID. PROCEED
FSIDI9: HRROI T1,[ASCIZ/
? Invalid number of swapping pages for this type of disk.
/]
CALL FSIPSO ;PRINT THE COMPLAINT
JRST FSIDI3 ;GO ASK AGAIN
;IF USER IS REFRESHING, FIND OUT HOW MUCH ROOM TO ALLOCATE FOR THE
;FRONT END FILE SYSTEM
FSID10: MOVX T4,MI%RFS ;ARE WE REFRESHING?
TDNN T4,STARTF
JRST FSID17 ;NO. DON'T ASK ABOUT THE SIZE
HRROI T1,[ASCIZ/
Do you want the default size front end file system? /]
HRROI T2,[ASCIZ/
[The default is 950 pages]
/]
MOVEI T3,FSIYNO ;GET YES OR NO
CALL FSIASK ;ASK QUESTION AND GET THE ANSWER
JRST FSID10 ;ERROR. ASK AGAIN
JUMPN T1,[MOVEI T1,NPGSFE
JRST FSID12]
;...
;USER DOESN'T WANT THE DEFAULT. GET THE USER'S CHOICE
FSID11: HRROI T1,[ASCIZ/
How many pages for the front end file system? /]
HRROI T2,[ASCIZ/
[Enter the decimal number of pages for the front end file system]
/]
MOVEI T3,FSIDEC ;GET A DECIMAL NUMBER
CALL FSIASK ;ASK QUESTION AND GET THE ANSWER
JRST FSID10 ;ERROR. ASK AGAIN
FSID12: JUMPL T1,FSID10 ;ASK AGAIN IF NEGATIVE
MOVEM T1,FEFSIZ ;SAVE THE ANSWER
JRST FSID13 ;YES.
REPEAT 0,<
FSIDI3: HRROI T1,[ASCIZ/
Is this structure the system structure? /]
HRROI T2,[ASCIZ/
[The system structure is the structure that contains <SYSTEM>
and <SUBSYS> and to which each user is connected by login. The
system structure must always be mounted during system operation.]
/]
MOVEI T3,FSIYNO ;GET A YES OR NO ANSWER
CALL FSIASK ;ASK THE QUESTION
JRST FSIDI3 ;GET AN ANSWER
SKIPE T1 ;WAS THE ANSWER YES?
MOVX T1,HB%PUB ;YES, MARK THAT THIS IS PUBLIC STR
MOVEM T1,FSIFLG ;SAVE FLAGS
>
FSID13: HRROI T1,[ASCIZ/
Do you want the default size bootstrap area? /]
HRROI T2,[ASCIZ/
[The default is 64 pages]
/]
MOVEI T3,FSIYNO ;GET YES OR NO
CALL FSIASK ;ASK QUESTION AND GET THE ANSWER
JRST FSID13 ;ERROR. ASK AGAIN
JUMPN T1,[MOVEI T1,NPGSBT
JRST FSID15]
;...
;USER DOESN'T WANT THE DEFAULT. GET THE USERS CHOICE
HRROI T1,[ASCIZ/
How many pages for the bootstrap file? /]
HRROI T2,[ASCIZ/
[Enter the decimal number of pages for the bootstrap file]
/]
MOVEI T3,FSIDEC ;GET A DECIMAL NUMBER
CALL FSIASK ;ASK QUESTION AND GET THE ANSWER
JRST FSID13 ;ERROR. ASK AGAIN
FSID15: MOVEM T1,BOTSIZ ;SAVE THE ANSWER
CAIL T1,NPGSBT ;IS THIS ENOUGH SPACE?
JRST FSID16 ;[8819] Yes
HRROI T1,[ASCIZ/
? Invalid number of pages for the bootstrap file
/]
CALL FSIPSO ;NO. COMPLAIN
JRST FSID13 ;TRY AGAIN
;[8819] See if user wants password encryption enabled.
FSID16: HRROI T1,[ASCIZ/
Do you want to enable password encryption for the system structure? /] ;[8819]
HRROI T2,[ASCIZ/
[Type 'YES' to enable password encryption or
'NO' to disable password encryption]
/] ;[8819]
MOVEI T3,FSIYNO ;[8819] Get YES or NO
CALL FSIASK ;[8819] Ask the question and get the answer
JRST FSID16 ;[8819] Failed. Try again
JUMPE T1,FSID17 ;[8819] If NO don't set MS%CRY
MOVX T1,MS%CRY ;[8819] Get the encryption bit
IORM T1,FSIFLG ;[8819] Set it up
FSID17: HRROI T1,[ASCIZ/
What is the name of this structure? /]
HRROI T2,[ASCIZ/
Enter 6 or fewer characters
/]
MOVEI T3,FSIDEV ;GET A SIXBIT DEVICE NAME
CALL FSIASK ;GET THE NAME OF THE STRUCTURE
JRST FSID17 ;FAILED, TRY AGAIN
JUMPE T1,FSID17 ;GAVE NO NAME, TRY AGAIN
MOVEM T1,FSINAM ;SAVE THE NAME
MOVE T1,APRSER ;GET CPU SERIAL NUMBER
MOVEM T1,FSISER
CALL WRTHOM ;NOW THAT HOMTAB IS OK, GO WRITE HB'S
RET ;ERROR ON WRITING OF HOME BLOCKS
HRROI T1,[ASCIZ/
[Structure "/]
CALL FSIPSO ;TELL OPERATOR THAT STR WAS DEFINED OK
MOVE T1,FSINAM ;GET STR NAME
CALL FSI6TY
HRROI T1,[ASCIZ/" successfully defined]
/]
CALL FSIPSO ;END MESSAGE AND EXIT
; JRST FSIDI0 ;LOOP BACK UNTIL USER THRU DEFINING
RET
SUBTTL FSICFG - Type out configuration of units
;FSICFG - TYPE OUT CONFIGURATION OF CHANNELS, CONTROLLERS, AND UNITS
FSICFG: STKVAR <FSICFC,FSICFK,FSICFU,FSICFA> ;ALLOCATE STORAGE
HRROI T1,FSIMS1 ;GET HELP MESSAGE
CALL FSIPSO ;TYPE OUT FIRST PART OF MESSAGE
SETOM FSICFC ;SET CHANNEL TO -1 TO START LOOP
FSICF1: MOVE T1,FSICFC ;GET CHANNEL NUMBER
MOVE T2,FSICFK ;AND CONTROLLER NUMBER
MOVE T3,FSICFU ;AND THE UNIT NUMBER
CALL ADVCKU ;ADVANCE TO NEXT DISK UNIT IN SYSTEM
JRST [ HRROI T1,[ASCIZ/]
/] ;NO MORE UNITS, GET FINAL TEXT
CALLRET FSIPSO] ;FINISH MESSAGE AND RETURN
MOVEM T1,FSICFC ;SAVE NEW CHANNEL NUMBER (DMOVEM DOESN'T WORK!!)
MOVEM T2,FSICFK ;AND NEW CONTROLLER NUMBER
MOVEM T3,FSICFU ;ALSO SAVE NEW UNIT NUMBER
MOVEM T4,FSICFA ;FINALLY SAVE UDB ADDRESS
HRROI T1,[ASCIZ/ /] ;START WITH SOME SPACES
CALL FSIPSO ;TYPE THEM
MOVE T1,FSICFC ;GET CHANNEL NUMBER
CALL FSIDTY ;TYPE IT
MOVEI T1,"," ;PRINT COMMA
CALL FSIPBO ; ...
MOVE T1,FSICFK ;GET CONTROLLER NUMBER
CALL FSIDTY ;PRINT IT
MOVEI T1,"," ;ANOTHER COMMA
CALL FSIPBO ;TYPE IT
MOVE T1,FSICFU ;GET UNIT NUMBER
CALL FSIDTY ;TYPE IT
HRROI T1,[ASCIZ / ;Type=/] ;PREPARE TO PRINT UNIT TYPE
CALL FSIPSO ; ...
MOVE T4,FSICFA ;GET UDB ADDRESS
LOAD T1,USTYP,(T4) ;GET TYPE
MOVE T1,NAMUTP(T1) ;GET POINTER TO NAME
CALL FSIPSO ;PRINT NAME
MOVE T4,UDBSTS(T4) ;GET UNIT STATUS
TXNE T4,US.OFS ;OFFLINE?
CALL FSICF5 ;YES - PRINT MESSAGE
TXNE T4,US.PGM ;PROGRAMMABLE DUAL PORT?
CALL FSICF6 ;YES - PRINT MESSAGE
TXNE T4,US.WLK ;WRITE LOCKED?
CALL FSICF7 ;YES - PRINT MESSAGE
HRROI T1,CRLF ;[7.1230] Point to CRLF
CALL FSIPSO
JRST FSICF1 ;LOOP FOR NEXT UNIT
;...
;HERE IF OFFLINE
FSICF5: HRROI T1,[ASCIZ /, Offline/]
CALL FSIPSO ;PRINT MESSAGE
RET
;HERE IF DUAL PORT
FSICF6: HRROI T1,[ASCIZ /, Dual port/]
CALL FSIPSO ;PRINT MESSAGE
RET
;HERE IF WRITE LOCKED
FSICF7: HRROI T1,[ASCIZ /, Write locked/]
CALL FSIPSO ;PRINT MESSAGE
RET
FSIMS1: ASCIZ/
[Enter a triple of numbers separated by commas that specify the channel,
controller, and unit upon which the appropriate pack is mounted. The
following is a list of valid channel, controller, and unit numbers:
/
SUBTTL CPY1/CPY2 - Correct one incorrect BAT block
;CPY1/CPY2 - CORRECT ONE INCORRECT BAT BLOCK
;AND WRITE THE CORRECT PAIR
;BOTH ACCEPT: T1/ FLAGS
; T2/ VIRTUAL ADDRESS OF FIRST BAT BLOCK
; T3/ PHYSICAL CORE ADDRESS
; P2/ CKU NUMBER
; P4/ SDBUDB POINTER
; P5/ STRTAB POINTER
CPY1: TDZA T4,T4 ;INDICATE COPYING PRIMARY TO SECONDARY
CPY2: SETOM T4 ;INDICATE COPYING SECONDARY TO PRIMARY
ASUBR <CPBFLG,CPBVIR,CPBPHY,CPBDIR> ;SAVE ARGUMENTS
TXNN T1,MI%MSG ;MESSAGE DESIRED ?
JRST CPYB10 ;NO, GO SET UP THE BLT INSTRUCTION
HRROI T1,[ASCIZ/% Copying secondary BAT block to primary on /]
SKIPN CPBDIR ;COPYING PRIMARY TO SECONDARY ?
HRROI T1,[ASCIZ/% Copying primary BAT block to secondary on /]
CALL FSIPSO ;ISSUE MESSAGE
CALL UNTSTR ;OUTPUT STR NAME AND UNIT NUMBER
HRROI T1,CRLF ;[7.1230] Point to CRLF
CALL FSIPSO ;TERMINATE LINE
; HERE TO DO THE ACTUAL COPY
CPYB10: MOVE T1,CPBVIR ;GET VIRTUAL ADDRESS OF FIRST BAT BLOCK
MOVEI T3,BATBL1 ;GET BLOCK NUMBER OF FIRST BAT BLOCK
MOVEI T4,BATBLK(T1) ;GET ADDRESS OF BLOCK # IN FIRST BAT BLOCK
SKIPN CPBDIR ;COPYING SECONDARY TO PRIMARY ?
JRST CPYB20 ;NO, GO SET UP TO COPY PRIMARY TO SECONDARY
HRLI T1,HBLEN(T1) ;YES, GET SOURCE ADDRESS
JRST CPYB30 ;GO SET UP TERMINATING ADDRESS FOR COPY
CPYB20: HRLI T1,(T1) ;GET SOURCE ADDRESS
ADDI T1,HBLEN ;GET DESTINATION ADDRESS
ADDI T3,HM2BLK-HM1BLK ;GET BLOCK NUMBER OF SECOND BAT BLOCK
ADDI T4,HBLEN ;POINNT TO BLOCK NUMBER IN SECOND BAT BLOCK
CPYB30: MOVEI T2,(T1) ;SET UP TERMINATING ADDRESS
BLT T1,HBLEN-2(T2) ;COPY THE GOOD BAT BLOCK
MOVEM T3,(T4) ;STORE PROPER BLOCK NUMBER IN DESTINATION BLOCK
MOVE T1,P2 ;GET CKU NUMBERS
MOVE T2,CPBVIR ;GET VIRTUAL ADDRESS OF BAT BLOCKS
MOVE T3,CPBPHY ;GET PHYSICAL ADDRESS OF BAT BLOCKS
CALL BATOUT ;WRITE THE NOW GOOD BAT BLOCKS
RETBAD ;FAILED, RETURN ERROR
RETSKP ;SUCCESS, RETURN
SUBTTL FSIBAT - Once only code for the BAT blocks
;FSIBAT - DO ONCE ONLY CODE FOR THE BAT BLOCKS
;ACCEPTS:
; T1/STRUCTURE NUMBER
; CALL FSIBAT
;RETURNS +1: ALWAYS
;DOES CONSISTENCY CHECK AND CORRECTS BAT BLOCK BY COPYING THE
;BACKUP LIKE CHKBAT
;IF NONE THERE, ASKS IF A SET SHOULD BE PUT ON AND DOES IT IF THE
;ANSWER IS YES
;CURRENTLY ONLY CALLED FOR STRUCTURE 0 AT SYSTEM STARTUP
FSIBAT: SAVEP ;SAVE THE PERMANENTS
MOVEM T1,P5 ;SAVE STRUCTURE NUMBER
MOVEI T1,HOMPGA ;THE WORK PAGE
CALL MLKMA ;LOCK IT
LSH T1,PGSFT ;MAKE IT A CORE ADDRESS
MOVE P1,T1 ;SAVE IT
FSIBA1: SKIPN P4,STRTAB(P5) ;DOES STRUCTURE EXIST?
JRST GOOD22 ;NO. DON'T DO ANYTHING TO IT
MOVN T1,SDBNUM(P4) ;YES. SET UP UNIT AOBJN WORD
HRLI P4,0(T1) ;NEGATIVE COUNT
HRRI P4,SDBUDB(P4) ;THE SDBUBD INDEX
;LOOP THROUGH ALL PACKS IN A STRUCTURE
NEW1: CALL SETBAT ; SET DSKBAT BIT IN DSKSTS
CALL FNDCHN ;FIND CKU NUMBERS FOR THIS PACK
MOVE P2,T1 ;SAVE IT
MOVE T2,P1 ;PHYSICAL CORE ADDRESS
MOVEI T3,HOMPGA ;VIRTUAL ADDRESS
CALL GETBAT ;GET THE BAT BLOCKS
MOVE T2,T1 ;BITS
TLNN T2,(1B0) ;PRIMARY OK?
JRST BAD1 ;NO
TLNE T2,(1B1) ;SECONDARY OK?
JRST GOOD2
MOVE T3,P1 ;CORE ADDRESS
MOVX T1,MI%MSG ;NOTE THAT A MESSAGE IS DESIRED
MOVEI T2,HOMPGA ;GET VIRTUAL ADDRESS OF FIRST BAT BLOCK
CALL CPY1 ;COPY PRIMARY
JRST NONB ;BAD
JRST GOOD2
;...
BAD1: TLNN T2,(1B1) ; A GOOD SECONDARY?
JRST NONB ;NO. NO BAT BLOCKS
MOVX T1,MI%MSG ;NOTE THAT A MESSAGE IS DESIRED
MOVEI T2,HOMPGA ;GET VIRTUAL ADDRESS OF FIRST BAT BLOCK
MOVE T3,P1 ;GET CORE ADDRESS
CALL CPY2 ;PUT SECONDARY INTO PRIMARY
JRST NONB ;BAD I/O
JRST GOOD2
;HERE WHEN NO GOOD BAT BLOCKS COULD BE FOUND FOR THIS UNIT
NONB: MOVEI T1,"?"
CALL FSIPBO ;ERROR PREFIX
CALL UNTSTR
HRROI T1,[ASCIZ / has no BAT blocks.
/]
CALL FSIPSO ;TELL HIM
REASK: HRROI T1,[ASCIZ /Do you want to write a set of prototype BAT blocks? /]
HRROI T2,BATASK ; THE QUESTION
HRROI T3,FSIYNO ; GET A YES OR A NO.
CALL FSIASK ; GO ASK THE QUESTION
JRST REASK ; ASK AGAIN
JUMPL T1,NEWBAT ; IF YES, GO MAKE THEM
JRST GOOD21 ; NO. SKIP IT THEN
NEWBAT: MOVE T1,P2 ; GET CKU NUMBERS
MOVEI T2,HOMPGA ; VIRTUAL ADDRESS OF NEW BAT BLOCKS
MOVE T3,P1 ; PHYSICAL CORE ADDRESS OF NEW BAT BLOCKS
MOVX T4,MI%MSG ; ISSUE A MESSAGE ON A WRITE ERROR
CALL MAKBAT ; CREATE A PAIR OF NEW BAT BLOCKS
JRST GOOD21 ; FAILED, GO ON
; ..
; ..
;THE PACK HAS TWO GOOD BAT BLOCKS HERE
GOOD2: CALL CLRBAT ; MARK STATUS WORD
GOOD21: AOBJN P4,NEW1 ;DO ALL PACKS
GOOD22: MOVEI T1,HOMPGA ;RELEASE PAGE THAT BAT BLOCKS WERE
CALL MULKMP ; READ INTO
RET ; AND DONE
SUBTTL FNDCHN/FNDCH1 - Find the CKU numbers for a pack
;FNDCHN/FNDCH1 - FIND THE CKU NUMBERS FOR A PACK (THE CHANNEL, CONTROLLER,
;AND UNIT NUMBERS OF THE PACK).
;ACCEPTS: P4/ SDBUDB INDEX (FOR CALL TO FNDCHN)
;OR: T3/ UDB (FOR CALL TO FNDCH1)
;RETURNS: T1/ CKU NUMBERS
;DESTROYS T2-T4
FNDCHN: HRRZ T3,0(P4) ;GET UDB
FNDCH1::SAVEP ;PROTECT SOME ACS
HRRZ P1,UDBCDB(T3) ;SET UP POINTERS
HRRZ P2,UDBKDB(T3) ;AS THEY NORMALLY ARE
MOVE P3,T3 ;FOR CALL
CALL FNDCKU ;GET THE PROPER NUMBERS
CALLRET CKUPAK ;PACK THEM INTO ONE AC AND RETURN
BATASK: ASCIZ /
[This pack does not have a valid set of BAT blocks. Answering yes will
cause the monitor to create the BAT blocks without performing a full
map function.]
/
SUBTTL MAKBAT - Create and write out new BAT blocks
;MAKBAT - ROUTINE TO CREATE AND WRITE OUT TWO NEW BAT BLOCKS
;
;ACCEPTS IN T1/ PHYSICAL CKU NUMBERS
; T2/ VIRTUAL ADDRESS OF WHERE NEW BAT BLOCKS ARE TO GO
; T3/ PHYSICAL MEMORY ADDRESS OF NEW BAT BLOCKS
; T4/ FLAGS:
; * P4/ SDBUDB POINTER FOR THIS UNIT
; * P5/ STRUCTURE NUMBER
; MI%MSG - ISSUE A MESSAGE ON TERMINAL ON WRITE ERROR
; CALL MAKBAT
;RETURNS: +1 FAILURE, WRITE ERROR
; +2 SUCCESS, BAT BLOCKS CREATED
;
; * P4 AND P5 NEED NOT BE SET UP IF MESSAGES ARE NOT DESIRED ON ERRORS
MAKBAT: ASUBR <MKBCKU,MKBVIR,MKBPHY,MKBFLG>
MOVE T1,MKBVIR ;GET START OF BAT BLOCK PAGE
SETZM (T1) ;CLEAR FIRST WORD OF NEW BAT BLOCK
ADDI T1,1 ;SET UP TO CLEAR THE FIRST BAT BLOCK
HRL T1,MKBVIR ;THE START
BLT T1,HBLEN-1(T2) ;CLEAR OUT ONE BLOCK
MOVSI T1,'BAT' ; THE BLOCK NAME
MOVEM T1,BATNAM(T2) ; TO THE NEW BLOCK
MOVE T1,[-MAXBFR,,BAT1P] ;FORM FREE SPACE WORD
MOVEM T1,BATFRE(T2) ; TO THE BLOCK
MOVEI T1,CODBAT ; UNLIKELY CODE
MOVEM T1,BATCOD(T2) ; TO THE BLOCK
MOVEI T1,BATBL1 ; BLOCK NUMBER
MOVEM T1,BATBLK(T2) ; TO THE BLOCK
ADDI T1,HM2BLK-HM1BLK ; NUMBER BETWEEN THEM
MOVEM T1,BATBLK+HBLEN(T2) ;THE BACKUP ADDRESS
MOVEI T1,HBLEN(T2)
HRLI T1,(T2) ; FOR THE BLT
BLT T1,2*HBLEN-2(T2) ; ALL BUT LAST WORD
MOVE T1,MKBCKU ; GET CHAN, CTRL, AND UNIT NUMBERS
MOVE T2,MKBVIR ;GET VIRTUAL CORE ADDRESS OF BLOCKS
MOVE T3,MKBPHY ;REAL CORE ADDRESS
CALL BATOUT ; WRITE IT
JRST MKB010 ; FAILED, GO ISSUE MESSAGE IF REQUESTED
RETSKP ; SUCCESS, RETURN
;...
; HERE ON A WRITE ERROR
MKB010: MOVE T1,MKBFLG ;GET THE FLAGS
TXNN T1,MI%MSG ;A MESSAGE DESIRED ?
RET ;NO, JUST GIVE FAIL RETURN
HRROI T1,[ASCIZ /? Failed to write BAT blocks for /]
CALL FSIPSO ;TELL HIM
CALL UNTSTR
HRROI T1,CRLF ;[7.1230] Point to CRLF
CALLRET FSIPSO ;CLEAN UP THE MESSAGE
SUBTTL CHKSWP - Validate a swapping structure
;CHKSWP - ROUTINE TO VALIDATE THE # OF PAGES FOR SWAPPING ON A STRUCTURE
;
;ACCEPTS IN T1/ UDB OF A DISK UNIT OF THE STRUCTURE
; T2/ # OF UNITS IN STRUCTURE
; T3/ # OF PAGES FOR SWAPPING ON STR
; CALL CHKSWP
;RETURNS: +1 FAILED, # OF PAGES SPECIFIED IS INVALID
; +2 SUCCESS, VALID # OF PAGES SPECIFIED
CHKSWP::JUMPE T3,RSKP ;RETURN SUCCESS IF NOTHING TO ALLOCATE
EXCH T1,T3 ;SWITCH ARGUMENTS
MOVX T4,US.DSK ;GET FLAG READY
SKIPLE T1 ;POSITIVE NUMBER OF PAGES FOR SWAPPING?
TDNN T4,UDBSTS(T3) ;AND THIS IS A DISK?
RETBAD (MSTX25) ;NO, ERROR
MOVE T3,UDBSIZ(T3) ;GET DISK SIZE POINTER
CALL CMPSWP ;COMPUTE # OF PAGES FOR SWAPPING ON THIS UNIT
MOVE T2,CYLUNT(T3) ;GET # OF CYLINDERS ON THIS UNIT
IMUL T2,PAGCYL(T3) ;COMPUTE # OF PAGES ON THIS UNIT
CAMG T2,T1 ;MORE PAGES THAN REQUESTED FOR SWAPPING ?
RETBAD (MSTX25) ;NO, FAIL
RETSKP ;YES, RETURN SUCCESS
SUBTTL CMPSWP - Compute swapping pages
;CMPSWP - ROUTINE TO COMPUTE # OF PAGES FOR SWAPPING ON A UNIT
;
;ACCEPTS IN T1/ DESIRED # OF PAGES FOR SWAPPING ON STRUCTURE
; T2/ NUMBER OF UNITS IN STRUCTURE
; T3/ ADDRESS OF DISK SIZE TABLE FOR THIS STRUCTURE
; CALL CMPSWP
;RETURNS: +1 ALWAYS, T1/ # OF PAGES FOR SWAPPING ON THIS UNIT
;PRESERVES T3
CMPSWP: SOS T1 ;ONE LESS
HRRZ T2,STHUNI ;GET NUMBER OF UNITS IN STRUCTURE
ADD T1,T2 ;T1 = NDST+NPACKS-1 (TO AVOID ROUND OFF)
IDIV T1,T2 ;GET # OF PAGES PER UNIT
ADD T1,PAGCYL(T3) ;ROUND TO EVEN NUMBER OF CYLINDERS
SUBI T1,1
IDIV T1,PAGCYL(T3)
IMUL T1,PAGCYL(T3)
RET ;RETURN
SUBTTL I/O Routines -- FSICPY - Copy one string to another
;FSICPY - COPY ONE STRING TO ANOTHER
;ACCEPTS IN T1/ POINTER TO DESTINATION STRING
; T2/ POINTER TO SOURCE STRING
; CALL FSICPY
;RETURNS +1: ALWAYS, UPDATED STRING POINTER IN T1 AND NULL AFTER END
FSICPY: ILDB T3,T2 ;GET NEXT CHARACTER
JUMPE T3,FSICP1 ;NULL MEANS AT END
IDPB T3,T1 ;STORE CHARACTER
JRST FSICPY ;LOOP BACK
FSICP1: MOVE T4,T1 ;NOW APPEND NULL
IDPB T3,T4 ;WITHOUT CHANGING BYTE POINTER IN T1
RET ;ALL DONE
SUBTTL I/O Routines -- FSIDTY/FSIOTY - Type out a number
;FSIDTY/FSIOTY - TYPE OUT A OCTAL OR DECIMAL NUMBER
;ACCEPTS IN T1/ NUMBER
; CALL FSIOTY
;RETURNS +1: ALWAYS
FSIDTY: SKIPA T3,[12] ;SET RADIX TO ^D10
FSIOTY: MOVEI T3,10 ;SET RADIX TO 8
STKVAR <<FSINBK,3>>
MOVE T2,T1 ;SET UP FOR CALL TO FSINST
MOVSI T1,(POINT 7,0) ;SET UP BYTE POINTER
HRRI T1,FSINBK
CALL FSINST
MOVEI T2,0 ;ADD NULL TO END OF STRING
IDPB T2,T1 ;...
HRROI T1,FSINBK
CALLRET FSIPSO ;TYPE NUMBER
SUBTTL I/O Routines -- FSINST - Convert a number to an ASCIZ string
;FSINST - CONVERT A NUMBER TO AN ASCIZ STRING
;ACCEPTS: T1/ STRING POINTER TO STORAGE
; T2/ NUMBER TO TYPE
; T3/ RADIX
; CALL FSINST
;RETURNS +1: ALWAYS, UPDATED STRING POINTER IN T1
FSINST: MOVE T4,T3 ;SAVE RADIX
JUMPGE T2,FSINS1 ;SKIP ON IF NUMBER IS POSITIVE
MOVEI T3,"-" ;IT'S NEGATIVE, GET MINUS SIGN
IDPB T3,T1 ;STORE IN THE STRING
MOVM T2,T2 ;AND MAKE NUMBER POSITIVE
FSINS1: IDIVI T2,0(T4) ;GET LOW ORDER DIGIT
PUSH P,T3 ;SAVE IT
SKIPE T2 ;ALL DONE?
CALL FSINS1 ;NO, GO GET NEXT LOW ORDER DIGIT
POP P,T2 ;GET HIGH ORDER DIGIT
ADDI T2,"0" ;MAKE IT ASCII
IDPB T2,T1 ;PUT IT IN THE STRING
RET ;GO GET OTHER DIGITS IF ANY
SUBTTL I/O Routines -- FSIASK - Ask a question and get an answer
;FSIASK - ASK A QUESTION AND GET AN ANSWER
; THIS ROUTINE HANDLES "?" AND RUBOUT
;ACCEPTS IN T1/ POINTER TO QUESTION STRING
; T2/ POINTER TO HELP STRING OR THE ADR OF THE HELP ROUTINE
; T3/ ADDRESS OF ROUTINE TO READ IN ANSWER
; CALL FSIASK
;RETURNS +1: ERROR
; +2: SUCCESSFUL, ANSWER IN T1
FSIASK: STKVAR <FSIASP,FSIASH,FSIASR>
MOVEM T1,FSIASP ;SAVE POINTER TO QUESTION
MOVEM T2,FSIASH ;SAVE POINTER TO HELP MESSAGE
HRRZM T3,FSIASR ;SAVE ADDRESS OF ROUTINE TO BE CALLED
FSIAS1: MOVE T1,FSIASP ;GET POINTER TO QUESTION STRING
CALL FSIPSO ;ASK THE QUESTION
MOVE T3,FSIASR ;GET ADDRESS OF ROUTINE PROVIDED BY CALLER
CALL 0(T3) ;CALL IT TO GET THE ANSWER
JRST [ JUMPE T1,FSIAS2 ;"?" TYPED
JRST FSIAS1] ;CONTROL-R TYPED
RETSKP ;RETURN WITH ANSWER IN T1
FSIAS2: MOVE T1,FSIASH ;GET POINTER TO HELP MESSAGE
TLNN T1,-1 ;IS THIS A HELP ROUTINE
JRST [ CALL 0(T1) ;YES, GO CALL IT
JRST FSIAS1] ;AND GO REASK THE QUESTION
CALL FSIPSO ;TYPE OUT HELP MESSAGE
JRST FSIAS1 ;GO ASK QUESTION AGAIN
SUBTTL I/O Routines -- FSIYNO - Get a yes or no answer
;FSIYNO - GET A YES OR NO ANSWER
; CALL FSIYNO
;RETURNS +1: T1=0 MEANS "?" TYPED, T1=1 MEANS CONT-R TYPED
; +2: T1=-1 MEANS YES, T1=0 MEANS NO
FSIYNO: CALL FSIPBI ;GET A CHARACTER FROM TTY
MOVE T2,T1 ;SAVE FIRST CHARACTER
FSIYN1: CAIN T1,"?" ;IS THIS A HELP REQUEST
JRST RFALSE ;YES, RETURN WITH T1=0
CAIN T1,"R"-100 ;CONTROL-R?
JRST [ MOVEI T1,1 ;YES, RETURN WITH T1=1
RET]
CAIE T1,"U"-100 ;CONTROL-U?
CAIN T1,.CHDEL ;OR RUBOUT?
JRST [ CALL FSIRUB ;YES, SIMULATE RUBOUT ACTION
JRST FSIYNO] ;START OVER AGAIN
CAIN T1,.CHLFD ;END OF LINE?
JRST FSIYN2 ;YES, CHECK ANSWER
CALL FSIPBI ;GET ANOTHER CHARACTER
JRST FSIYN1 ;GO CHECK IT OUT
FSIYN2: CAIN T2,"Y" ;FIRST CHAR A Y?
JRST FSIYN3 ;YES, GO RETURN TRUE
CAIN T2,"N" ;NO?
JRST FSIYN4 ;YES, GO RETURN FALSE
HRROI T1,[ASCIZ/? Answer "Y" or "N" /]
CALL FSIPSO ;TYPE OUT HELP
JRST FSIYNO ;GO GET ANSWER AGAIN
FSIYN4: TDZA T1,T1 ;NO, RETURN T1=0
FSIYN3: SETO T1, ;YES, RETURN T1=-1
RETSKP
SUBTTL I/O Routines -- FSISIX - Read in a SIXBIT name
;FSISIX - READ IN A SIXBIT NAME
; CALL FSISIX
;RETURNS +1: T1=0 MEANS "?" TYPED, T1=1 MEANS CONTROL-R TYPED
; +2: SIXBIT NAME IN T1
FSIDEV: TDZA T4,T4 ;ALLOW ":" AS A TERMINATOR
FSISIX: SETO T4, ;COLON IS NOT ALLOWED
FSISI4: MOVE T2,[POINT 6,T3] ;SET UP STRING POINTER TO ANSWER
SETZ T3, ;INITIALIZE ANSWER AC
FSISI1: CALL FSIPBI ;GET A CHARACTER
CAIN T1,"?"
JRST RFALSE ;QUESTION MARK WAS TYPED
CAIN T1,"R"-100 ;CONTROL-R?
JRST [ MOVEI T1,1 ;YES, RETURN WITH T1=1
RET]
CAIE T1,"U"-100 ;CONTROL-U?
CAIN T1,.CHDEL ;OR RUBOUT?
JRST [ CALL FSIRUB ;YES. GO TYPE 'XXX'
JRST FSISI4] ;START OVER. T4 IS STILL SET UP
CAIN T1,.CHLFD ;END OF LINE?
JRST [ MOVE T1,T3 ;YES, GET ANSWER
RETSKP] ;RETURN WITH ANSWER IN T1
JUMPN T4,FSISI2 ;ALLOWING A COLON?
CAIN T1,":" ;YES, IS IT A COLON
TLZ T2,7700 ;YES, IGNORE ANY OTHER STUFF AFTER IT
FSISI2: SUBI T1,40 ;CONVERT TO SIXBIT
TRNE T1,777700 ;LEGAL SIXBIT CHARACTER?
JRST FSISI3 ;NO, GO COMPLAIN
IDPB T1,T2 ;STORE CHARACTER IN ANSWER
TLNN T2,770000 ;AT END OF 6 CHAR WORD?
TLZ T2,7700 ;YES, SET SIZE FIELD TO 0 FOR REMAINDER
JRST FSISI1 ;LOOP BACK FOR OTHER CHARACTERS
FSISI3: HRROI T1,[ASCIZ/? Illegal character, retype answer again: /]
CALL FSIPSO ;TYPE OUT COMPLAINT
JRST FSISI4 ;START OVER. T4 IS STILL SET UP
SUBTTL I/O Routines -- FSI6TY - Type out a SIXBIT name
;FSI6TY - TYPE OUT A SIXBIT NAME
;ACCEPTS IN T1/ SIXBIT NAME
; CALL FSI6TY
;RETURNS +1: ALWAYS
FSI6TY: MOVE T2,T1 ;SAVE SIXBIT NAME
MOVE T3,[POINT 6,T2] ;SET UP BYTE POINTER
FSI6T1: ILDB T1,T3 ;GET NEXT CHARACTER
JUMPE T1,R ;IF ZERO, EXIT
ADDI T1,40 ;MAKE IT ASCII
CALL FSIPBO ;TYPE OUT CHARACTER
TLNE T3,770000 ;LAST CHARACTER?
JRST FSI6T1 ;NO, GO TYPE OUT NEXT CHAR
RET ;YES, EXIT
SUBTTL I/O Routines -- FSIOCT/FSIDEC - Get a signed number
;FSIOCT/FSIDEC - ROUTINES TO GET A SIGNED OCTAL OR DECIMAL NUMBER
; CALL FSIOCT OR CALL FSIDEC
;RETURNS +1: T1=0 MEANS "?" TYPED, T1=1 MEANS CONTROL-R TYPED
; +2: NUMBER IN T1
FSIOCT: SKIPA T1,[^D8] ;GET OCTAL RADIX
FSIDEC: MOVEI T1,^D10 ;OR DECIMAL RADIX
STKVAR <FSIOCN,FSIOCR,FSIOCC,FSIOCS> ;ALLOCATE VARIABLES
MOVEM T1,FSIOCR ;REMEMBER RADIX
FSIOC0: SETZM FSIOCN ;INITIALIZE THE ANSWER
SETZM FSIOCC ;INITIALIZE COUNT OF DIGITS SEEN
SETZM FSIOCS ;INITIALIZE SIGN OF NUMBER TO BE POSITIVE
FSIOC1: CALL FSIPBI ;GET A CHARACTER
CAIN T1,"?" ;QUESTION MARK?
JRST RFALSE ;YES, RETURN WITH T1=0
CAIN T1,"R"-100 ;CONTROL-R?
JRST [ MOVEI T1,1 ;YES, RETURN WITH T1=1
RET]
CAIE T1,"U"-100 ;CONTROL-U?
CAIN T1,.CHDEL ;OR RUBOUT?
JRST [ CALL FSIRUB ;YES, TYPE OUT RUBOUT STRING
JRST FSIOC0] ;AND START OVER AGAIN
CAIE T1," " ;ALLOW SPACE OR COMMA
CAIN T1,"," ; TO DELIMIT A NUMBER
SKIPA
CAIN T1,.CHLFD ;END OF LINE?
JRST [ SKIPG FSIOCC ;ANY DIGITS TYPED
JRST FSIOC2 ;NO, NULL INPUT ISN'T LEGAL
MOVE T1,FSIOCN ;GET NUMBER TYPED
SKIPE FSIOCS ;MINUS SIGN USED?
MOVNS T1 ;YES, NEGATE THE NUMBER
RETSKP] ;AND RETURN
CAIN T1,"-" ;MINUS SIGN?
JRST [ SKIPN FSIOCS ;ALREADY TYPED A MINUS SIGN?
SKIPE FSIOCC ;OR ALREADY TYPED DIGITS?
JRST FSIOCE ;YES, BAD NUMBER
SETOM FSIOCS ;REMEMBER TO NEGATE ANSWER
JRST FSIOC1] ;AND CONTINUE
;...
SUBI T1,"0" ;SHOULD BE A DIGIT NOW, CONVERT FROM ASCIZ
SKIPL T1 ;TOO SMALL TO BE A DIGIT?
CAML T1,FSIOCR ;OR TOO LARGE TO BE A DIGIT?
JRST FSIOCE ;YES, COMPLAIN
MOVE T2,FSIOCR ;GET RADIX
IMULM T2,FSIOCN ;MULTIPLY PREVIOUS RESULT BY RADIX
ADDM T1,FSIOCN ;ADD IN NEW DIGIT
AOS FSIOCC ;COUNT UP DIGITS SEEN
JRST FSIOC1 ;AND LOOP BACK FOR MORE
FSIOC2: HRROI T1,[ASCIZ/? Null answer not allowed, retype answer: /]
CALL FSIPSO ;TYPE OUT MESSAGE
JRST FSIOC0 ;AND TRY AGAIN
FSIOCE: HRROI T1,[ASCIZ/
? Illegal number, retype answer: /]
CALL FSIPSO ;TYPE OUT COMPLAINT
JRST FSIOC0 ;TRY AGAIN
SUBTTL I/O Routines -- FSIRUB - Type out rubout string
;FSIRUB - TYPE OUT RUBOUT STRING
; CALL FSIRUB
;RETURNS +1: ALWAYS
FSIRUB: HRROI T1,[ASCIZ/ XXX
/]
CALL FSIPSO ;TYPE OUT STRING
RET ;AND RETURN
SUBTTL I/O Routines -- FSIPSO - Type out a string
;FSIPSO - TYPE OUT A STRING
;ACCEPTS IN T1/ STRING POINTER
; CALL FSIPSO
;RETURNS +1: ALWAYS
; CLOBERS T1 ONLY
FSIPSO: STKVAR <FSIPSP>
TLC T1,-1 ;SEE IF -1,,ADR
TLCN T1,-1 ;...
HRLI T1,(POINT 7,0) ;YES, SET UP BYTE POINTER
MOVEM T1,FSIPSP ;SAVE STRING POINTER
FSIPS1: ILDB T1,FSIPSP ;GET NEXT CHARACTER
JUMPE T1,R ;RETURN ON NULL
CALL FSIPBO ;OUTPUT THIS CHARACTER
JRST FSIPS1 ;LOOP TIL THRU
SUBTTL I/O Routines -- FSIBPI - Read in a character
;FSIBPI - READ IN A CHARACTER
; CALL FSIPBI
;RETURNS +1: ALWAYS, UPPERCASE CHARACTER IN T1
; SAVES ALL ACS
;NOTE: THIS ROUTINE LOCKS THE TELETYPE DATA EVEN THOUGH IT IS THE
;ONLY PROCESS RUNNING BECAUSE TCI CALLS ULKTTY IF IT GOES INTO INPUT
;WAIT.
FSIPBI: PUSH P,T2 ;SAVE ALL ACS
PUSH P,T3
PUSH P,T4
FSIPB1: MOVE T2,CTYLNO ;GET CTY LINE NUMBER
CALL LCKTTY ;POINT TO DYNAMIC DATA
BUG.(HLT,TTNAC4,DSKALC,HARD,<CTY not active at FSIPBI>,,<
Cause: The CTY was not available to read in a character.
Action: Call Digital Field Service.
>)
CALL TCI ;INPUT A CHAR
JRST FSIPB1 ;NEEDED TO BLOCK. GO TRY AGAIN
CALL ULKTTY ;FREE THE TTY
CAIN T1,.CHCRT ;FLUSH CR
JRST FSIPB1
POP P,T4
POP P,T3
POP P,T2
RET
SUBTTL I/O Routines -- FSIPBO - Output a character
;FSIPBO - ROUTINE TO OUTPUT A CHARACTER
;ACCEPTS IN T1/ CHARACTER
; CALL FSIPBO
;RETURN +1: ALWAYS, ALL ACS PRESERVED
FSIPBO: SAVET
MOVE T2,CTYLNO ;GET CTY LINE NUMBER
CALL LCKTTY ;POINT TO DYNAMIC DATA
BUG.(HLT,TTNAC3,DSKALC,HARD,<CTY not active at FSIPBO>,,<
Cause: The monitor tried to write to the CTY, but the CTY was not available to
output a character. The line is not active.
Action: Call Digital Field Service.
>)
CALL TCO
CALL ULKTTY ;FREE THE TTY
RET
SUBTTL I/O Routines -- FSIPSW - Print help text for swapping default
;FSIPSW - ROUTINE TO PRINT HELP TEXT FOR SWAPPING SPACE DEFAULT
;USES THE DEFAULT NUMBER OF PAGES FOR THE RUNNING MONITOR AND ROUNDS
;IT UP TO AN INTEGRAL NUMBER OF CYLINDERS. ASSUMES THAT ALL KNOWN
;DISK TYPES HAVE THE SAME NUMBER OF PAGES PER CYLINDER AS AN RP04
FSIPSW: HRROI T1,[ASCIZ/
[The default is /]
CALL FSIPSO
MOVEI T3,DSKSZ0 ;ASSUME RP04 SIZE CHARACTERISTICS
MOVE T1,NSWPGS ;GET DEFAULT NUMBER OF PAGES
IDIV T1,PAGCYL(T3) ;CONVERT TO CYLINDERS
SKIPE T2 ;WAS THERE A REMAINDER?
AOS T1 ;YES. INCREMENT CYLINDER COUNT
IMUL T1,PAGCYL(T3) ;CONVERT BACK TO PAGES
CALL FSIDTY ;PRINT THE NUMBER
HRROI T1,[ASCIZ/ pages]
/]
CALL FSIPSO
RET
SUBTTL End of DSKALC
TNXEND
END