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monitor-sources/phym2.mac
There are 48 other files named phym2.mac in the archive. Click here to see a list.
; Edit= 8908 to PHYM2.MAC on 16-Aug-88 by GSCOTT
;Update BUG. documentation.
; UPD ID= 8587, RIP:<7.MONITOR>PHYM2.MAC.6, 11-Feb-88 16:55:31 by GSCOTT
;TCO 7.1218 - Update copyright date.
; UPD ID= 8434, RIP:<7.MONITOR>PHYM2.MAC.5, 4-Feb-88 15:02:06 by GSCOTT
;TCO 7.1210 - Set TM2CCI, TM2HER, TM2N2S, and TM2NUD normally not dumpable.
; UPD ID= 318, RIP:<7.MONITOR>PHYM2.MAC.4, 8-Dec-87 11:24:13 by GSCOTT
;TCO 7.1075 - Add TOC.
; *** Edit 7457 to PHYM2.MAC by GSCOTT on 23-Apr-87, for SPR #21597
; Make SET ONLINE command work for drives connected to TM02/TM03/TM78
; UPD ID= 2158, SNARK:<6.1.MONITOR>PHYM2.MAC.10, 5-Jun-85 10:41:14 by MCCOLLUM
;TCO 6.1.1406 - Update copyright notice.
; UPD ID= 1921, SNARK:<6.1.MONITOR>PHYM2.MAC.9, 7-May-85 21:14:49 by MCCOLLUM
;TCO 6.1.1238 - Fix more BUG. documentation
; UPD ID= 1793, SNARK:<6.1.MONITOR>PHYM2.MAC.8, 23-Apr-85 13:14:23 by MCCOLLUM
;TCO 6.1.1238 - Fix more BUG. documentation
; UPD ID= 1744, SNARK:<6.1.MONITOR>PHYM2.MAC.7, 9-Apr-85 15:09:12 by MCCOLLUM
;TCO 6.1.1238 - Fix BUG. documentation
; UPD ID= 4823, SNARK:<6.MONITOR>PHYM2.MAC.6, 17-Sep-84 10:43:05 by PURRETTA
;Update copyright notice
; UPD ID= 3108, SNARK:<6.MONITOR>PHYM2.MAC.5, 7-Nov-83 21:22:55 by MCLEAN
;ADD DISPATCH FOR PORT RELEASE
; UPD ID= 2580, SNARK:<6.MONITOR>PHYM2.MAC.4, 14-Jun-83 10:19:34 by HAUDEL
;TCO 6.1668 - Add SAVEQ at TM2SIO:
; UPD ID= 1606, SNARK:<6.MONITOR>PHYM2.MAC.3, 29-Dec-82 13:48:23 by DONAHUE
;TCO 6.1410 - Change references to MTINDX to STKVAR's
; UPD ID= 903, SNARK:<6.MONITOR>PHYM2.MAC.2, 9-Jun-82 23:25:18 by MURPHY
;TCO 6.1147 - Move bugdefs from BUGS.MAC to here and put them in-line.
; UPD ID= 198, SNARK:<5.MONITOR>PHYM2.MAC.9, 18-Sep-81 11:53:01 by WACHS
;TCO 5.1516 Retry on fake format errors
; UPD ID= 2209, SNARK:<5.MONITOR>PHYM2.MAC.8, 17-Jun-81 20:36:24 by ZIMA
;TCO 5.1372 - fix up error retry count for retry succeeded case.
; UPD ID= 1900, SNARK:<5.MONITOR>PHYM2.MAC.7, 29-Apr-81 07:58:30 by WACHS
; UPD ID= 1859, SNARK:<5.MONITOR>PHYM2.MAC.6, 21-Apr-81 13:50:43 by SCHMITT
;TCO 5.1292 - Reset overdue timer before starting I/O
; UPD ID= 1821, SNARK:<5.MONITOR>PHYM2.MAC.5, 17-Apr-81 09:50:09 by WACHS
;TCO 5.1288 Maintain statistics by recording mode
; UPD ID= 739, SNARK:<5.MONITOR>PHYM2.MAC.4, 7-Jul-80 00:47:37 by DBELL
;TCO 5.1096 - ADD UDSCCK DISPATCH ENTRY
; UPD ID= 504, SNARK:<4.1.MONITOR>PHYM2.MAC.22, 1-May-80 17:40:18 by DBELL
;TCO 4.1.1154 - FIX ANOTHER CAUSE FOR TM2CCI ERRORS FROM TU77 TAPES
; UPD ID= 363, SNARK:<4.1.MONITOR>PHYM2.MAC.21, 26-Mar-80 11:07:07 by DBELL
;TCO 4.1.1119 - MAKE CHANGES REQUIRED FOR RP20 DISKS
;TCO 4.1.1114 - PREVENT TM2CCI AND PH2RAE ERRORS FOR TU77 TAPES
;<4.MONITOR>PHYM2.MAC.20, 20-Sep-79 15:31:29, EDIT BY DBELL
;TCO 4.2476 - ADD DISPATCH FOR UNIT EXISTANCE CHECK
;<4.MONITOR>PHYM2.MAC.19, 13-Sep-79 15:29:49, EDIT BY DBELL
;TCO 4.2465 - MAKE ANSI ASCII MODE ILLEGAL FOR TMO3 CONTROLLER
;<OSMAN.MON>PHYM2.MAC.1, 10-Sep-79 16:00:08, EDIT BY OSMAN
;TCO 4.2412 - Move definition of BUGHLTs, BUGCHKs, and BUGINFs to BUGS.MAC
;<4.MONITOR>PHYM2.MAC.16, 5-Jun-79 17:51:26, EDIT BY BOSACK
;CHANGES FOR PRODUCTION TU77S
;<4.MONITOR>PHYM2.MAC.15, 5-Mar-79 15:51:14, EDIT BY KONEN
;UPDATE COPYRIGHT FOR RELEASE 4
;<2BOSACK>PHYM2.MAC.5, 19-Feb-79 23:56:56, EDIT BY BOSACK
;<2BOSACK>PHYM2.MAC.4, 19-Feb-79 21:18:56, EDIT BY BOSACK
;ADD LOGIC TO DETERMINE ACTUAL DENSITY SELECTED BY TM03
;<2BOSACK>PHYM2.MAC.3, 14-Feb-79 11:04:26, EDIT BY BOSACK
;RECOGNIZE TU77 AS A SPECIFIC DEVICE TYPE, CORRECT CHARS FOR TM03
;<4.MONITOR>PHYM2.MAC.12, 1-Feb-79 23:22:17, Edit by MCLEAN
;<4.MONITOR>PHYM2.MAC.11, 31-Jan-79 01:04:15, Edit by MCLEAN
;FIX PREVIOUS EDIT TO GET CORRECT ADDRESS FOR KDB ENTRY
;<4.MONITOR>PHYM2.MAC.10, 21-Jan-79 17:54:05, Edit by MCLEAN
;ADD SUPPORT FOR .DGPDL
;<4.MONITOR>PHYM2.MAC.9, 30-Aug-78 09:37:50, EDIT BY FORTMILLER
;TOC 4.1998 Set US.REW at Attention Interrupt time instead of
; at Start I/O time
;<4.MONITOR>PHYM2.MAC.8, 23-Aug-78 13:47:52, Edit by MCLEAN
;<4.MONITOR>PHYM2.MAC.7, 21-Aug-78 23:03:04, Edit by MCLEAN
;FIX IT SO REWIND DONE DOES PSI INTERRUPT
;<2MCLEAN>PHYM2.MAC.5, 30-Jul-78 14:55:08, Edit by MCLEAN
;<3A.MONITOR>PHYM2.MAC.18, 30-Jul-78 17:36:11, Edit by MCLEAN
;<4.MONITOR>PHYM2.MAC.4, 28-Jul-78 10:06:53, EDIT BY MILLER
;IFX UP FRAME COUNT ON WRITE
;<4.MONITOR>PHYM2.MAC.3, 26-Jul-78 00:22:24, Edit by MCLEAN
;DECOMMIT US.IDB
;<4.MONITOR>PHYM2.MAC.2, 22-Jul-78 14:05:44, Edit by MCLEAN
;ADD READ/WRITE COUNT TO UDB
;<3A.MONITOR>PHYM2.MAC.17, 14-Jul-78 13:44:18, EDIT BY BOSACK
;DONT IGNORE PRE/POSTAMBLE ERRORS ON PE READ
;<3A.MONITOR>PHYM2.MAC.16, 2-Jun-78 14:58:35, EDIT BY BOSACK
;ENSURE TM2POL ALWAYS LEAVES TM02/3 WITH ERRORS RESET
;<3A-NEW>PHYM2.MAC.15, 31-May-78 09:50:11, Edit by FORTMILLER
;<3A-NEW>PHYM2.MAC.14, 25-May-78 22:20:46, Edit by FORTMILLER
;ADD DX20 SUPPORT
;PUT DENSITYS DRIVE IS CAPABLE OF IN UDBCHR
;CONVERT UDBDSN TO DECIMAL SERIAL NUMBER
;<3A.MONITOR>PHYM2.MAC.13, 18-May-78 13:12:37, EDIT BY BOSACK
;CLEAR ERROR BYTE POINTER AT TERMINATION OF ERROR RECOVERY
;<3A.MONITOR>PHYM2.MAC.12, 29-Mar-78 12:11:03, Edit by MCLEAN
;FIX MTINDX TO POINT TO FREE MTCUTB
;<3A.MONITOR>PHYM2.MAC.11, 29-Mar-78 08:19:07, EDIT BY MILLER
;ADD UNIT,KONTROLLER,CHANNEL INFO TO ALL "HARDWARE" BUG TYPEOUTS
;<3A.MONITOR>PHYM2.MAC.10, 9-Mar-78 00:00:34, Edit by MCLEAN
;<3A.MONITOR>PHYM2.MAC.9, 8-Mar-78 23:56:40, Edit by MCLEAN
;MOVE INIUNI CALL SO IT DOESN'T BREAK MULTIPLE UNITS
;AND ISN'T CALLED AS OFTEN
;<2BOSACK>PHYM2.MAC.53, 24-Feb-78 01:49:19, EDIT BY BOSACK
;<2BOSACK>PHYM2.MAC.52, 24-Feb-78 01:36:56, EDIT BY BOSACK
;REWORK ERROR INTERFACE WRT DATA/DEVICE ERRORS
;<4.MONITOR>PHYM2.MAC.7, 1-Feb-78 14:51:28, Edit by MCLEAN
;FIX FOR NEW PHYALC,PHYUDB CALLING SEQ
;<4.MONITOR>PHYM2.MAC.6, 31-Jan-78 00:16:42, Edit by MCLEAN
;<4.MONITOR>PHYM2.MAC.5, 30-Jan-78 21:31:17, Edit by MCLEAN
;ADD CREATION OF UDB FOR UNIT GOING ON LINE
; 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 PROLOG,PHYPAR,SERCOD ;SYSTEM PARAMETERS
TTITLE (PHYM2,,< - Device Dependent Code for TM02/TM03/TU45/TU77>)
SUBTTL P.KINZELMAN 25 JULY 75
TM2VER==63 ;EDIT VERSION
ENTRY TM2DSP ;FOR LIBRARY SEARCH
Subttl Table of Contents
; Table of Contents for PHYM2
;
; Section Page
;
;
; 1. Parameters . . . . . . . . . . . . . . . . . . . . . . 3
; 2. Device Dependant Table Defs . . . . . . . . . . . . . 5
; 3. TM02 Error Recovery Defs . . . . . . . . . . . . . . . 6
; 4. Dispatch For TM02 . . . . . . . . . . . . . . . . . . 7
; 5. TM02 Initializing Routine . . . . . . . . . . . . . . 9
; 6. Start I/O Routine . . . . . . . . . . . . . . . . . . 12
; 7. RH20 Command Done Interrupt . . . . . . . . . . . . . 16
; 8. Error Retry Entry Point . . . . . . . . . . . . . . . 28
; 9. Routine To Poll Slaves To See If Done Rewind . . . . . 35
; 10. TM02 Function Table . . . . . . . . . . . . . . . . . 38
; 11. End of PHYM2 . . . . . . . . . . . . . . . . . . . . . 41
SUBTTL Parameters
;DRIVE REGISTERS USED IN DATAO'S
DO.CS1==0B5 ;DRIVE CONTROL REGISTER
DO.DS==1B5 ;STATUS REGISTER
DO.ER==2B5 ;ERROR REGISTER
DO.MR==3B5 ;MAINTENANCE REGISTER
DO.AS==4B5 ;ATTENTION SUMMARY
DO.FC==5B5 ;FRAME COUNTER
DO.DT==6B5 ;DRIVE TYPE
DO.CK==7B5 ;CHECK CHARACTER REGISTER
DO.SN==10B5 ;SERIAL NUMBER
DO.TC==11B5 ;TAPE CONTROL REGISTER
;DRIVE FUNCTIONS LOADED INTO DRIVE CONTROL REGISTER
DF.NOP==1 ;NO-OP
DF.UNL==3 ;UNLOAD (REWIND OFF-LINE)
DF.REW==7 ;REWIND
DF.CLR==11 ;DRIVE CLEAR
DF.RIPS==21 ;READ-IN, PRESET
DF.ERA==25 ;ERASE
DF.WTM==27 ;WRITE TAPE MARK
DF.SPF==31 ;SPACE FORWARD
DF.SPR==33 ;SPACE REVERSE
DF.WCF==51 ;WRITE CHECK FORWARD (READ FWD)
DF.WCR==57 ;WRITE CHECK REVERSE (READ REV)
DF.WTF==61 ;WRITE FORWARD
DF.RDF==71 ;READ FORWARD
DF.RDR==77 ;READ REVERSE
DXES==200000 ;DISABLE XFER ON ERROR STOP BIT
;DRIVE STATUS REGISTER
DS.ATA==1B20 ;ATTENTION
DS.ERR==1B21 ;COMPOSITE ERROR
DS.PIP==1B22 ;POSITIONING IN PROGRESS
DS.MOL==1B23 ;MEDIUM ON LINE
DS.WRL==1B24 ;WRITE LOCKED
DS.EOT==1B25 ;END OF TAPE
;SPARE
DS.DPR==1B27 ;DRIVE PRESENT
DS.DRY==1B28 ;DRIVE READY (NOT GO)
DS.SSC==1B29 ;SLAVE STATUS CHANGE
DS.PES==1B30 ;PHASE ENCODED STATUS
DS.SDN==1B31 ;SHUTDOWN BIT
DS.IDB==1B32 ;IDENT BURST (FOR PE)
DS.TM==1B33 ;TAPE MARK
DS.BOT==1B34 ;BEGINNING OF TAPE
DS.SLA==1B35 ;SLAVE ATTENTION
;DRIVE ERROR REGISTER
ER.COR==1B20 ;CORRECTABLE DATA/ CRC ERROR
ER.UNS==1B21 ;UNSAFE
ER.OPI==1B22 ;OPERATION INCOMPLETE
ER.DTE==1B23 ;DRIVE TIMING ERROR
ER.NEF==1B24 ;NON-EXISTANT FUNCTION
ER.CS==1B25 ;CORRECTABLE SKEW/ ILLEGAL TAPE MARK
ER.FCE==1B26 ;FRAME COUNT ERROR
ER.NSG==1B27 ;NON-STANDARD GAP (CRAP IN THE GAP)
ER.LRC==1B28 ;LRC ERROR/ FORMAT (PREAMBLE POSTAMBLE) ERROR
ER.INC==1B29 ;INCORRECTABLE DATA/ VERTICAL PARITY ERROR
ER.DPA==1B30 ;DATA BUS PARITY ERROR
ER.FMT==1B31 ;FORMAT ERROR
ER.CPA==1B32 ;CBUS PARITY ERROR
ER.RMR==1B33 ;REGISTER MODIFICATION REFUSED
ER.ILR==1B34 ;ILLEGAL REGISTER ADDRESS
ER.ILF==1B35 ;ILLEGAL FUNCTION
;DRIVE TYPE BITS NEEDED:
DT.SPR==1B25 ;A SLAVE IS SELECTED
SUBTTL Device Dependant Table Defs
TM2SLC==4 ;[7457] Maximum number of slaves on TM02/03
;****************************
;UDB EXTENSIONS
TU6HDN==UDBDDM ;HARDWARE DETERMINED DENSITY
;NOTE: DONT CHANGE WITHOUT FIXING MAGTAP
TU6EPS==TU6HDN+1 ;ERROR POSITION
TU6EBP==TU6EPS+1 ;ERROR BYTE POINTER
TU6EBC==TU6EBP+1 ;ERROR BYTE COUNTER
TU6ECL==TU6EBC+1 ;TAPE CLEANER FLAG
LU.TM2==TU6ECL+1 ;LENGTH OF TM02 UDB
;****************************
;KDB DEVICE DEPENDANT PORTION
KDBUDB==KDBDDP ;[7457] UDB table (for TM2SLC units)
TM2ADR==KDBUDB+TM2SLC ;[7457] Massbus address of TM02
TM.CNI==TM2ADR+1 ;CONI OF RH GOES HERE
TM.CS1==TM.CNI+1 ;DATAI RH CONTROL REGISTER
TM.DBF==TM.CS1+1 ;DATAI RH DATA REGISTER
TM2REG==TM.DBF+1 ;DRIVE REGISTERS GO HERE
DR.CS1==0 ;DRIVE CONTROL REGISTER
DR.DS==1 ;STATUS REGISTER
DR.ER==2 ;ERROR REGISTER
DR.MR==3 ;MAINTENANCE REGISTER
DR.AS==4 ;ATTENTION SUMMARY
DR.FC==5 ;FRAME COUNTER
DR.DT==6 ;DRIVE TYPE
DR.CK==7 ;CHECK CHARACTER REGISTER
DR.SN==10 ;SERIAL NUMBER
DR.TC==11 ;TAPE CONTROL REGISTER
LK.TM2==TM2REG+12 ;LENGTH OF KDB
SUBTTL TM02 Error Recovery Defs
;PRESENTLY, IF YOU BACKSPACE INTO BOT, YOU MUST WAIT 8 SEC
;TO REGAIN CONTROL OF THE DRIVE AGAIN (OPI TIMEOUT) BY GETTING AN INT.
;THE DRIVES WILL HOPEFULLY BE FIXED SOMEDAY. UNTIL THEN,
;THIS HANDLER TRIES VERY HARD TO KEEP FROM HITTING BOT
;ON A TAPE CLEAN SEQUENCE IF OPIFIX = 0. MAKE OPIFIX NOT 0
;WHEN THE DRIVES ARE FIXED TO GIVE AN INTERRUPT AS SOON AS THEY
;HIT BOT. (TAPE WILL CLEAN BETTER IF YOU LET THE DRIVE HIT
;BOT.)
OPIFIX==0
;RETRY COUNTS:
CLNREC==5 ;SP REVERSE THIS NR RECORDS TO HIT CLEANER
RTYOP==5 ;RETRY OPERATION THIS MANY TIMES BEFORE TAPE CLEAN SEQUENCE
RTYCLN==5 ;RETRY CLEAN SEQUENCE THIS MANY TIMES ON READ
;BEFORE GIVING UP
;THE TOTAL NR OF RD RETRIES = RTYOP*(RTYCLN+1)
RTYWRT==^D20 ;# WRITE RETRIES MAXIMUM BEFORE ABORT
;ERROR WORDS
; TU6EBC ;ERR BYTE COUNTER (USED IF WE HIT BOT
;DURING TAPE CLEAN SEQUENCE)
; TU6EBP ;ERR BYTE POINTER
; TU6ECL ;-1= IN TAPE CLN SEQUENCE, 0= NOT
; UDBERR(RH) ;CURRENT FUNCTION (1 - 17)
;ON RETRY OF ORIGINAL OPERATION, THIS LOC
;MUST BE SET TO THE ORIGINAL OPERATION
; UDBERC ;RETRY COUNT
;CONVERTED TO # RETRIES DONE AT END
; TU6EPS ;WE SHOULD BE HERE WHEN WE'RE
;READY TO RETRY OPERATION
SUBTTL Dispatch For TM02
TM2DSP::JRST TM2INI ;0 - INITIALIZATION
JRST TM2SIO ;1 - START I/O
JRST TM2INT ;2 - HANDLE INTERRUPT (DATA OPERATION OR SPACE)
JRST TM2ERR ;3 - ERROR RECOVERY
JRST TM2HNG ;4 - HUNG DEVICE
RET ;5 - NOT USED
RET ;6 - NOT USED
JRST TM2SIO ;7 - START POSITION OPERATION
JRST TM2ATN ;10 - ATTENTION INTERRUPT (CALLED AS MANY
;TIMES AS THERE ARE TM02 DRAS BITS UP)
JRST TM2PRQ ;11 - SKIP IF POSITION REQUIRED
RET ;12 - STACK SECOND COMMAND, FAIL FOR TM02/3
JRST TM2LGL ;[7457] 13 - Check legality of a unit
RET ;14 - CHECK FOR HALTED CONTROLLER
RET ;15 - RELEASE PORT
;[7457] TM2LGL - Check legality of a unit
;[7457] Called with:
;[7457] Q2/ unit number
;[7457] Returns: RFALSE if unit out of range
;[7457] to EXTUDB if unit not out of range
TM2LGL: CAILE Q2,3 ;[7457] Only 4 units are legal on TM02/TM03
JRST RFALSE ;[7457] Return badly if out of range
CALLRET EXTUDB ;[7457] Let PHYSIO do the rest of the work
;[7457] TM2HNG - Set bits when a drive is hung
;[7457] Called with:
;[7457] P4/ pointing to IORB
TM2HNG: MOVX T1,IS.NRT!IS.ERR!IS.DVE ;SET FATAL BITS
IORM T1,IRBSTS(P4) ;AND REFRESH IT
RET
;HERE TO DETERMINE IF THIS REQUEST SHOULD GO ON PWQ OR TWQ
TM2PRQ: LDB T1,IRYFCN ;GET FUNCTION
MOVE T1,TM2FTB(T1) ;GET TABLE ENTRY
TXNN T1,TB.DOP ;DATA OPERATION?
RETSKP ;NO - POSITION ALWAYS REQUIRED
HRRZ T2,UDBPWQ(P3) ;YES - ANY PENDING POSITION OPERATIONS?
JUMPE T2,R ;NONE - APPEND TO TWQ
CAIN T2,(P4) ;AT HEAD OF PWQ?
RET ;YES - NEXT TRANSFER
RETSKP ;APPEND TO PWQ
;ROUTINE TO READ ALL TM02 REGISTERS INTO TM2REG IN THE KDB
TM2RDR: MOVSI T4,-LK.TM2+TM2REG ;-# REGISTERS
TM2RD1: SETZM T2 ;CLEAR REGISTER ADDRESS
DPB T4, [POINT 6,T2,5] ;SETUP REGISTER ADDRESS
CALL RDREG ;READ THE REGISTER
ADD T4,P2 ;POINT TO KDB
MOVEM T1,TM2REG(T4) ;STORE IT IN THE KDB
SUB T4,P2 ;BACK TO RELATIVE POINTER
AOBJN T4,TM2RD1 ;GO BACK FOR REST OF REGISTERS
CALL ERRCNI ;GET CONI AND DATAI
MOVEM T1,TM.CNI(P2) ;SAVE IN KDB
MOVEM T2,TM.CS1(P2) ; ...
MOVEM T3,TM.DBF(P2) ; ...
RET
SUBTTL TM02 Initializing Routine
;THIS ROUTINE IS CALLED ONCE PER TM02 DRIVE ON THE SYSTEM
;TO SET UP UDB'S - 1 PER DRIVE ON THE TM02
; P1/ CDB
; Q2/ TM02 UNIT NUMBER
; Q3/ ADDRESS TO STORE KDB
; P5/ UNIT NUMBER TO INITIALIZE, OR -1 FOR ALL UNITS
; OUTPUT P2,P3
TM2INI: SAVEQ ;SAVE REGISTERS
JUMPL P5,TM2ALU ;SKIP ON IF WE INIT ALL UNITS
MOVE P2,CDBIUN(P1) ;GET KDB ADDRESS
ADD P2,Q2 ;POINT TO CORRECT UNIT
MOVE P2,0(P2) ;GET ENTRY
SKIPE P3,P2 ;FOUND ONE?
JRST TM2USU ;YES DON'T CREATE A NEW ONE
TM2ALU: MOVX T1,LK.TM2 ;LENGTH OF KDB
CALL PHYALC ;RESERVE SPACE
RET ;RETURN IF NO SPACE FOUND
MOVEM T1,P2 ;SAVE ADDRESS IN PROPER AC
MOVE P3,T1 ;COPY KDB
MOVEI T1,.BTKDB ;MARK AS KDB
DPB T1,USYBKT ; ...
MOVX T2,DO.DT ;GET DRIVE TYPE REG
CALL RDREG3 ; ...
ANDI T1,777 ;GET JUST TYPE CODE
CAIG T1,TY.T2H ;IS THIS A TM02?
CAIGE T1,TY.T2L ; ???
SKIPA T1,[EXP .UTTM3] ;NO - IS TM03
MOVX T1,.UTTM2 ;YES - SET UP UNIT TYPE IN KDB
STOR T1,USTYP,(P2) ;...
UNINI: MOVSI T1,-TM2SLC ;[7457] Set up AOBJN index to slaves
HRRI T1,KDBUDB(P2) ;MAKE RH POINT TO UDB ENTRIES IN KDB
MOVEM T1,KDBIUN(P2) ;INITIAL POINTER
MOVEM T1,KDBCUN(P2) ;CURRENT POINTER
HRRZM Q2,TM2ADR(P2) ;SAVE KDB ADDRESS
MOVEI T1,TM2DSP ;INSERT DISPATCH VECTOR
MOVEM T1,KDBDSP(P2) ; ...
TM2USU: SKIPGE Q1,P5 ;[7457] Skip loading Q1 if doing a single unit
MOVSI Q1,-TM2SLC ;[7457] Load AOB pointer for all units
INILP: CALL INIUNI ;INITIALIZE A SINGLE UNIT
JFCL ;IGNORE ERROR RETURN
NODRV: AOBJN Q1,INILP ;TRY NEXT SLAVE
TOORET: MOVE T1,P2 ;TELL RETURN TO PUT KDB INTO CDB
RET
;THIS ROUTINE IS CALLED TO INITIALIZE A SPECIFIC SLAVE
;INPUT C(P1)=CDB C(Q1)=UNIT C(P2)KDB NR; OUTPUT P3
INIUNI: STKVAR <MTINDX> ;INDEX TO MTCUTB
HRRZ T2,Q1 ;GET CURRENT SLAVE #
HRLI T2,(DO.TC) ;SET UP FOR TAPE CNTL REGISTER
CALL WTREG3 ;DO IT
MOVX T2,DO.DT ;GET DRIVE TYPE
CALL RDREG3
TXNN T1,DT.SPR ;DOES IT EXIST?
RET ;NOPE
HRLOI T3,-MTAN-1 ;IF 1ST TIME THRU
INIUN1: AOBJP T3, [BUG.(INF,TM2N2S,PHYM2,HARD,<PHYM2 - More drives than table space, excess ignored>,,<
Cause: The number of tape drives on the system exceeds the value of MTAN.
All drives after MTAN will be ignored.
Action: To accommodate more tape drives, the monitor must be rebuilt with a
larger value of MTAN.
>,,<DB%NND>) ;[7.1210]
JRST TOORET] ;DON'T INITIALIZE ANY MORE SLAVES
SKIPE MTCUTB(T3) ;CHECK TO SEE IF UNIT FREE
JRST INIUN1 ;NOPE TRY NEXT ONE
MOVEM T3,MTINDX ;SAVE CURRENT LOGICAL INDEX
MOVE T3,[TM2DSP,,LU.TM2] ;YES, SET UP ADDRESS,,LENGTH
ADD P2,Q1 ;POINT TO PROPER KDB ENTRY
CALL PHYUDB ;AND ASK FOR UDB ALLOCATION
RET ;RETURN IF NO SPACE FOUND
HRRZM P3,KDBUDB(P2) ;SAVE LINK
SUB P2,Q1 ;FUDGE IT BACK
HRRZM P2,UDBKDB(P3) ;SAVE BKWDS LINK
MOVE T3,MTINDX ;GET CURRENT LOGICAL INDEX
HRLZM P1,MTCUTB(T3) ;SAVE LINK TO CDB IN LOGICAL TABLE
HRRM P3,MTCUTB(T3) ;SAVE LINK TO UDB
MOVX T2,DO.DS ;GET DRIVE STATUS
CALL RDREG3
MOVX T3,US.TAP ;INDICATE A TAPE TYPE DEVICE
TXNN T1,DS.MOL ;ON LINE?
TXO T3,US.OFS ;NO, SET OFF LINE BIT
TXNE T1,DS.WRL ;WRITE LOCKED?
TXO T3,US.WLK ;YES
HLLM T3,UDBSTS(P3) ;SAVE UDB STATUS
SETOM TU6HDN(P3) ;INDICATE UNKNOWN DENSITY
MOVX T2,DO.DT ;GET DEVICE TYPE AGAIN
CALL RDREG3 ; ...
ANDI T1,737 ;MASK (40 BIT IS ON FOR TM03)
CAIN T1,TY.T77 ;A TU77?
SKIPA T3,[EXP .UTT77] ;YES, SET CORRECT TYPE
MOVX T3,.UTT45 ;NO - TU45 UNIT TYPE
STOR T3,USTYP,(P3) ;SAVE IT
MOVX T3,UC.200!UC.556!UC.800!UC.160!UC.CD!UC.AA!UC.IC ;DENSITYS AND MODES DRIVE IS CAPABLE OF
LOAD T2,USTYP,(P2) ;GET CONTROLLER TYPE
CAIE T2,.UTTM2 ;A TM02?
TXZ T3,UC.200!UC.556!UC.AA ;NO - ASSUME NO 200, 556 OR ANSI ASCII
MOVEM T3,UDBCHR(P3) ; AND PUT THAT INFO INTO THE UDB
MOVX T2,DO.SN ;NOW SERIAL NR
CALL RDREG
CALL PHCVBO ;CONVERT BCD TO OCTAL
MOVEM T1,UDBDSN(P3) ;STORE IT
HRRZM Q1,UDBSLV(P3) ;SET UP SLAVE ADDRESS
AOS JB0FLG ;THIS WILL REQUEST JOB0 INCASE CALLER SETS MTAJB0
RETSKP ;RETURN
SUBTTL Start I/O Routine
;C(P4)=IORB C(P1)=CDB C(P2)=KDB C(P3)=UDB
;IF IN ERR RECOVERY, GET FN FROM RH(UDBERR)
;RET MEANS RE-CALL IN 1 MIN TO TRY AGAIN
;PUTS TM02 FN IN Q1, AND DATAO (IF NEEDED) IN T2
;RETSKP (CHSTRT) MEANS OK, IT'S STARTED
TM2SIO: SAVEQ
HRRZ Q1,UDBERR(P3) ;GET FUNCTION IF ERROR RECOVERY
SKIPN Q1 ;IN ERROR RECOVERY?
LOAD Q1,ISFCN,(P4) ;NO, GET FN FROM IORB
SKIPG Q1,TM2FTB(Q1) ;VALID FN?
JRST BADSIO ;REFUSE TO START IT
SKIPGE IRBSTS(P4) ;MAKE SURE PAGEM NOT SET
JRST BADSIO ;IS SET REFUSE IT
CALL TM2CON ;CONNECT TO DRIVE (AND CLEAR ERRORS)
RET ;ERROR
MOVX T2,DO.FC ;IN CASE WE DON'T WANT TO LOAD FC
TXNE Q1,TB.NFC ;DO WE LOAD FC WITH SOMETHING SPECIAL?
JRST NOFC ;NO- LOAD 0
TXNN Q1,TB.DOP ;DATA OPERATION?
JRST TM2NDO ;NO, T2=-#RECORDS ON SPACE
MOVN T2,IRBCNT(P4) ;BYTE COUNT FROM IORB
LOAD T1,IRBDM,(P4) ;GET DATA MODE
HLRZ T1,MTBFMT(T1) ;GET MULTIPLIER
SKIPE T1 ;SAVE TIME IF FRAMES=BYTES
IMUL T2,T1 ;CALCULATE # FRAMES
JRST TM2DO ;WE'RE A DATA OPERATION
BADSIO: BUG.(CHK,PM2SIO,PHYM2,HARD,<PHYM2 - Illegal function at start IO>,,<
Cause: The IORB function code provided to TM2SIO is less than or equal to
zero or the short form (PAGEM) request bit is set in the IORB.
Action: If this BUGCHK is reproducable, set it dumpable, and send in an SPR
with the dump and how to reproduce the problem.
>)
MOVX T1,IS.ERR!IS.NRT!IS.DVE ;MARK AN ERROR OCCURED
IORM T1,IRBSTS(P4) ;IN IORB
RET
TM2NDO: SKIPE UDBERR(P3) ;IN ERROR RECOVERY?
SKIPA T2,[-1] ;YES, SPACE 1 RECORD
MOVN T2,IRBCNT(P4) ;NO, DO # RECORDS FROM IORB
TM2DO: ANDI T2,177777 ;16 BITS OF FRM COUNT
HRLI T2,(DO.FC) ;DO FRM COUNT TO FRM COUNT REGISTER
NOFC: ANDI Q1,77 ;6 BITS OF TM02 FN
HRRZM P3,KDBACT(P2) ;SAVE CURRENT UDB IN KDB
JRST CHSTRT ;NOW START THINGS MOVING
;ROUTINE TO SELECT A SLAVE, SET UP TCREG
;CHECK FOR NECESSARY STATUS BITS
;CALL IT TO BEGIN AN OPERATION WITH C(Q1)=FN TABLE ENTRY
;RET WITH BITS SET IF NOT RDY (OFF-LINE, ETC.) RETSKP IF ALL OK
TM2CON: MOVX T2,DO.DS ;READY TO READ STATUS REG
CALL RDREG ;READ IT
TXNN T1,DS.ERR!DS.SSC ;IS ERROR IR SSC UP?
JRST TM2CNO ;NO, DON'T DO DRIVE CLR
MOVX T2,DO.TC ;YES, DO DRIVE CLR
HRR T2,UDBSLV(P3) ;BUT FIRST SELECT DRIVE ABOUT TO BE USED
CALL WTREG ;BECAUSE WE KNOW IT'S NOT BUSY
MOVEI T4,^D10 ;COUNT OF ATTEMPTS TO CLEAR ERR
CON1: MOVX T2,DF.CLR ;FIRST CLEAR OUT DRIVE
CALL WTREG ;DO IT
MOVX T2,DO.DS ;SELECT STATUS
CALL RDREG
TXNE T1,DS.ERR ;IS ERROR UP?
JRST [ SOJG T4,CON1 ;RETRY EXHAUSTED?
RET] ;CANT START IO
CALL TM2POL ;CHECK FOR REWIND DONE
TM2CNO: HRRZ T2,UDBSLV(P3) ;GET SLAVE #
HRLI T2,(DO.TC) ;SELECT TAPE CNTL REGISTER
LOAD T1,IRBDN,(P4) ;GET DENSITY
CAIG T1,4 ;TOO BIG?
SKIPGE T1,MTBDEN(T1) ;OR ILLEGAL?
JRST CONBAD ;YES, GIVE ERROR
DPB T1,[POINT 3,T2,27] ;SET IN POSITION IN ACC
LOAD T1,IRBPAR,(P4) ;GET PARITY
DPB T1,[POINT 1,T2,32] ;SET IN POSITION
LOAD T1,IRBDM,(P4) ;GET DATA MODE
CAIN T1,.SJDMA ;ANSI ASCII MODE?
JRST [ LOAD T3,USTYP,(P2) ;YES, GET CONTROLLER TYPE
CAIN T3,.UTTM3 ;DOING ANSI ASCII ON TMO3?
JRST CONBAD ;YES, THAT'S NOT POSSIBLE
JRST .+1] ;OTHERWISE IT'S OK
CAIG T1,4 ;TOO BIG?
SKIPGE T1,MTBFMT(T1) ;OR ILLEGAL?
JRST CONBAD ;YES, LOSE
DPB T1,[POINT 4,T2,31] ;SET FMT
CALL WTREG ;FIRE 1!
MOVX T2,DO.DS
CALL RDREG ;GET STATUS IN T1
TXNE Q1,TB.WRT ;[7457] Is it a write operation?
SKIPA T2,[DS.MOL!DS.DRY!DS.WRL] ;[7457] Yes include write lock be 0
MOVX T2,DS.MOL!DS.DRY ;[7457] No, MOL and DRY should be 1
TXC T1,DS.MOL!DS.DRY ;[7457] Complement bits to be set to one
TDNN T1,T2 ;[7457] Skip if bits not set right
RETSKP ;[7457] Return OK if all bits are OK
TXC T1,DS.MOL!DS.DRY ;[7457] Reset online and ready bits
;[7457] Drive is not in the correct state, update UDB and IORB bits
MOVX T2,US.WLK ;SET UP THESE BITS
ANDCAM T2,UDBSTS(P3) ;1ST CLEAR THEM
TXNE T1,DS.WRL ;[7457] Write locked?
IORM T2,UDBSTS(P3) ;SET STATUS IN UDB
MOVE T2,IRBSTS(P4) ;[7457] Load IORB status bits
TXNE Q1,TB.WRT ;WRITE OPERATION?
TXNN T1,DS.WRL ;AND WRITE LOCKED?
SKIPA ;NO
TXO T2,IS.ERR!IS.NRT!IS.DVE ;YES, SET ERROR BITS
TXNN T1,DS.WRL ;WRITE LOCKED?
TXZA T2,IS.WLK ;[7457] Not write locked, clear bit
TXO T2,IS.WLK ;[7457] Write locked, set bit
TXNN T1,DS.MOL ;[7457] Is the unit offline?
TXO T2,IS.ERR!IS.DVE ;[7457] Drive is offline, light error bits
MOVEM T2,IRBSTS(P4) ;[7457] Store updated status
CALLRET TM2OFC ;DO ONLINE/OFFLINE CHECK AND RETURN
;HERE IF CAN'T CONNECT BECAUSE OF BAD DENSITY OR MODE:
CONBAD: MOVX T1,IS.ERR!IS.NRT!IS.DVE ;ILLEGAL, TREAT AS HARD ERR
IORM T1,IRBSTS(P4) ;STORE THE STATUS
RET ;RETURN BAD
SUBTTL RH20 Command Done Interrupt
;C(P1)=CDB C(P2)=KDB
TM2INT: PUSH P,Q2 ;LATER DON'T SAVE TILL AFTER FTLCHK
PUSH P,Q1 ;LIKEWISE, I'M SURE
SKIPN P3,KDBACT(P2) ;DO WE HAVE A CURRENT UDB?
JRST TM2INU ;NO UDB
SETZM KDBACT(P2) ;CLEAR THE CURRENT UDB
CALL SETIRB ;GET ACTIVE IORB
CALL FTLCHK ;CHECK FOR FATAL ERRS AND PUT DRDS REGISTER
JRST [POP P,Q1 ;INTO Q2, TM2FTB FN ENTRY INTO Q1
POP P,Q2
RET] ;FATAL ERR
TXNN Q1,TB.WRT ;ARE WE READING?
TXZ T1,ER.NSG ;YES, IGNORE NSG ERR
TMENTY: TXNE Q1,TB.REV ;ARE WE BACKWARDS?
SOSA UDBPS2(P3) ;YES, THEN SUBTRACT 1 RECORD
AOS UDBPS2(P3) ;NO, ADD 1
HRRM T1,Q1 ;SAVE ERROR REGISTER (LH OF Q1 IS FLAGS)
TXNN Q2,DS.TM ;IS IT TAPE MARK?
JRST NOTM ;NOT TM
TXNE Q1,TB.REV ;ARE WE REVERSE
SOSA UDBPS1(P3) ;YES, BACK UP 1 FILE
AOS UDBPS1(P3) ;NO, FORWARD 1 FILE
NOTM: TXNN Q2,DS.BOT ;ARE WE AT BOT?
JRST NOBOT ;NO
SETZM UDBPS1(P3) ;YES, FILE 0
SETZM UDBPS2(P3) ;RECORD 0
SETOM TU6HDN(P3) ;UNKNOWN DENSITY
NOBOT: TXNE Q2,DS.PES ;ARE WE IN PE MODE?
TXNE Q1,TB.WRT ;AND READ?
SKIPA ;NO
TXZ Q1,ER.COR!ER.CS ;YES, THESE ARE NOT ERRORS
TXNE Q1,TB.RD ;ON READ FCE IS LEGAL
TXZ Q1,ER.FCE
TXNN Q1,ER.COR!ER.CS!ER.FCE!ER.NSG!ER.LRC!ER.DPA!ER.INC ;RETRY?
JRST CKCONI ;NO DATA RETRY ERRS HERE
DORTY: TXNE Q1,TB.RD ;IN READ?
TXNN Q2,DS.TM ;AND TM?
SKIPA ;NO
JRST NODERS ;YES, THEN DON'T RETRY
MOVX T3,IS.ERR!IS.DTE ;YES, ERROR- DO RETRY
IORM T3,IRBSTS(P4) ;SET IORB ERR (DATA ERR)
CALL TM2RDR ;GET DEVICE REGISTERS
JRST POPPOL ;POP STACK AND POLL SLAVES
;DON'T BOTHER SETTING UP STATUS BITS
;HERE WHEN DONE INTERRUPT AND NO SAVED UDB
TM2INU: HRRZ T1,CDBADR(P1) ;[8908] Get channel number
HRRZ T2,TM2ADR(P2) ;[8908] Get TM02 address
BUG.(CHK,TM2NUD,PHYM2,HARD,<PHYM2 - Channel done interrupt but no unit active>,<<T1,CDBADR>,<T2,TM2ADR>>,<
Cause: A command done interrupt was issued by an RH20 channel but there was no
unit active on that channel. If an OVRDTA had previously occured, and
the device finally responds, this BUGINF will happen. This usually
indicates a hardware failure.
Action: Field Service should check the devices on the channel listed in the
additional data; any channel/controller/unit listed in OVRDTA BUGCHKs
should be suspected.
Data: CDBADR - channel number
KDBADR - controller number
>,,<DB%NND>) ;[8908][7.1210]
JRST POPPOL ;CLEAN UP STACK
CKCONI: TXNN Q1,TB.DOP ;DATA OPERATION?
JRST NODERS ;NO - DONT ASK CHANNEL IF ANY ERRS
CALL CKERR ;SEE IF ANY RETRIABLE ERRS IN CONI
JRST DORTY ;YES, RETRY THE TRANSFER
NODERS: SKIPGE P5,TU6HDN(P3) ;GET DENSITY FROM HARDWARE
LOAD P5,IRBDN,(P4) ;NOT AVAILABLE, GET IT FROM IORB
CAIE P5,.SJD16 ;1600 BPI (PE MODE)?
SKIPA P5,P3 ;NO, SET TO COUNT NRZI STATISTICS
MOVEI P5,1(P3) ;YES, ACCUMULATE PE STATS
TXNN Q1,TB.RD ;ARE WE READING?
JRST SPENTY ;NO, DON'T TELL ABT FRM COUNT
MOVSI T1,(US.BOT) ;WERE WE AT BOT?
TDNE T1,UDBSTS(P3) ; ???
CALL GTHDEN ;YES - FIGURE OUT HARDWARE
MOVX T2,DO.FC ;GET FRM COUNT
CALL RDREG
ADDM T1,UDBRED(P3) ;ACCUMULATE FRAMES READ
ADDM T1,UDBRNR(P5) ;ACCUMULATE NRZI/PE FRAMES READ
AOS UDBRCT(P3) ;INCR READ COUNT
LOAD T3,IRBDM,(P4) ;GET DATA MODE
CAIG T3,4 ;LEGAL?
SKIPGE T3,MTBFMT(T3) ;AGAIN?
JRST [ BUG.(CHK,TM2IDM,PHYM2,HARD,<PHYM2 - Illegal data mode at Done interrupt>,<<T3,MODE>>,<
Cause: The TM02/3 IORB data mode was invalid or illegal when a done interrupt
occurs.
Action: There is probably a TM02/3 hardware problem that should be checked by
Field Service.
Data: MODE - TM02/3 data mode at done interrupt
>)
MOVEI T3,0 ;ACT LIKE WORDS
JRST .+1]
HLRZ T3,T3 ;#FRAMES/BYTE
JUMPE T3,NODIV ;SAVE TIME IF FRAMES=BYTES
IDIV T1,T3 ;CALCULATE # BYTES
SKIPE T2 ;REMAINDER?
AOS T1 ;YES, ANOTHER BYTE
NODIV: MOVEM T1,IRBCNT(P4) ;TELL HOW MANY FRAMES ON READ
SPENTY: TXNN Q1,TB.WRT ;WRITE?
JRST NOTWRT ;NO
LOAD T3,IRBDM,(P4) ;GET DATA MODE
HLRZ T3,MTBFMT(T3) ;GET FRAMES/BYTE
SKIPN T3 ;FRAMES=BYTES?
SKIPA T3,IRBCNT(P4) ;YES. GET COUNT AND SAVE MULTIPLY
IMUL T3,IRBCNT(P4) ;GET FRAMES
ADDM T3,UDBWRT(P3) ;ACCUMULATE FRAMES WRITTEN
ADDM T3,UDBWNR(P5) ;ACCUMULATE NRZI/PE WRITE STATS
AOS UDBWCT(P3) ;UPDATE READ COUNT
NOTWRT: MOVX T2,IS.BOT!IS.EOT!IS.TPM!IS.WLK ;ZERO BITS
ANDCAM T2,IRBSTS(P4) ;DO IT TO IT
TXNN Q2,DS.BOT ;AT BOT?
TXZ T2,IS.BOT ;NO
TXNE Q1,TB.WRT ;ARE WE WRITING?
TXNN Q2,DS.EOT ;AND AT EOT?
TXZ T2,IS.EOT ;NO TO EITHER
TXNN Q2,DS.TM ;TP MK
TXZ T2,IS.TPM ;NO, CLEAR TM FLAG
TXNE Q1,TB.REV ;SPACE REVERSE OR READ REVERSE
TXNN Q2,DS.BOT ;AND AT BOT?
SKIPA ;NO TO EITHER
TXO T2,IS.TPM ;YES TO BOTH, RETURN TAPE MARK
TXNN Q2,DS.WRL ;WRITE LOCKED?
TXZ T2,IS.WLK ;NO
IORM T2,IRBSTS(P4) ;AND SAVE IT (LEAVE ERR SET IF IT WAS SET)
MOVX T2,US.BOT ;CLEAR THESE BITS
ANDCAM T2,UDBSTS(P3) ;DO IT
TXNN Q2,DS.BOT ;AT BOT?
TXZ T2,US.BOT ;NO, CLEAR BIT
IORM T2,UDBSTS(P3) ;SAVE IT
MOVE T1,Q2 ;GET ERRORS
CALL TM2OFC ;DO OFFLINE CHECK
TXNE Q1,TB.DOP ;IF A DATA OPERATION,
AOS -2(P) ;SKIP RETURN TO THE CHANNEL
JRST POPPOL ;ANYBODY DONE A REWIND?
;AND THEN A WORD FROM OUR SPONSOR...
;HERE TO DETERMINE WHAT DENSITY THE TAPE HARDWARE REALLY READING AT
; P1,2,3 SETUP
; RH(Q2) DRIVE STATUS REGISTER
; CALL GTHDEN
;RETURNS+1(ALWAYS):
; DENSITY STORED IN UDB FOR MAGTAP (OR LEFT AS UNKNOWN FOR TM02)
GTHDEN: LOAD T1,USTYP,(P2) ;DO WE HAVE A TM03?
CAIE T1,.UTTM3 ; ???
RET ;NO - ASSUME DENSITY AS SET
MOVEI T1,.SJDN8 ;YES - FIRST ASSUME 800BPI
TRNE Q2,DS.PES ;PHASE ENCODED?
MOVEI T1,.SJD16 ;YES - IS REALLY 1600BPI
MOVEM T1,TU6HDN(P3) ;STORE FOR MAGTAP
RET ;RETURN
;COMES HERE ON AN ATA INTERRUPT (INCLUDING SPACING OPS)
;C(P1)=CDB C(P2)=KDB
;WILL SET C(P4)= 0 IF NONE
;SETS C(P3)=UDB
;ALWAYS RET (NEVER SKP RET'S)
;IF ERR, IS.ERR AND EITHER <IS.DVE OR IS.DTE> WILL BE SET
;IF IS.ERR NOT SET, WE ARE FINISHED WITH THIS IORB
TM2ATN: PUSH P,Q2 ;SAVE Q2
MOVE Q2,TM2ADR(P2) ;GET OUR MASSBUS ADDRESS
MOVX T2,1
LSH T2,(Q2) ;MASK TO CLEAR OUR ATTENTION BIT
HRLI T2,(DO.AS) ;REGISTER ADDRESS
CALL WTREG3 ;CLEAR THE BIT
PUSH P,Q1
HRRZ P3,KDBACT(P2) ;GET ACTIVE UDB (IF ANY)
JUMPE P3,CHKNEW ;IF NO UDB, JUST CHECK FOR REWS AND UNITS ON LINE
MOVX T1,US.ACT ;UNIT ACTIVE?
TDNE T1,UDBSTS(P3) ; ??
JRST CKNDOP ;YES - FINISH UP THEN POLL
HRRZ Q1,UDBADR(P3) ;GET UNIT ADDRESS
MOVE P3,TM2ADR(P2) ;GET KONTROLLER ADDRESS
HRRZ T1,CDBADR(P1) ;GET CHANNEL ADDRESS
BUG.(INF,TM2UNA,PHYM2,HARD,<PHYM2 - Done interrupt and UDB not active>,<<T1,CDBADR>,<P3,UDBADR>>,<
Cause: The TM02/3 driver got a done interrupt from a unit, but did not believe
that the unit was active. If an OVRDTA had previously occured, and the
device finally responds, this BUGINF will happen. This usually
indicates a hardware failure.
Action: Field Service should check the devices on the channel listed in the
additional data; any channel/controller/unit listed in OVRDTA BUGCHKs
should be suspected.
Data: CDBADR - CDB address
UDBADR - UDB address
>) ;[8908]
SETZB P3,KDBACT(P2) ;RESET SAVED UDB
JRST POPPOL ;AND GO POLL
CKNDOP: CALL SETIRB ;GET CURRENT IORB
HRRZ Q1,UDBERR(P3) ;GET FUNCTION CODE
SKIPN Q1 ;IN ERROR RECOVERY?
LOAD Q1,ISFCN,(P4) ;NO, GET IT FROM IORB
MOVE Q1,TM2FTB(Q1) ;GET FUNCTION ENTRY
TXNN Q1,TB.DOP ;DATA OPERATION?
JRST NDOP ;NO
;THE FOLLOWING COMMENTED CODE CAUSES THE 2020 TO GET INTO AN
;INTERRUPT LOOP SINCE THE OPERATION APPEARS NOT TO BE CORRECTLY TERMINATED
; MOVX T2,DO.DS ;CHECK IF DEVICE STILL ON LINE
; CALL RDREG ; ...
; TXNN T1,DS.MOL ;ONLINE?
; JRST NDOP ;NO - TREAT AS IF TERMINATING NONDATA OP
MOVEI P4,0 ;YES, ENSURE RECALL AT INTERRUPT ENTRY
JRST TM2ATX ;AND EXIT ATN
NDOP: SETZM KDBACT(P2) ;CLEAR SAVED UDB
CALL FTLCHK ;ANY FATAL ERRORS? (PUT DRIVE STATUS IN Q2,
TM2ATX: JRST [POP P,Q1 ;YES TM2FTB ENTRY IN Q1)
POP P,Q2
RET] ;FATAL ERR
MOVE P5,P3 ;POINT P5 AT UDB TO UPDATE WRITE COUNTERS
TXNE Q1,TB.TM ;WRITE TM OPERATION?
JRST TMENTY ;YES, USE DATA ROUTINES
TXNE Q1,TB.ERA ;ERASE OPERATION?
JRST SPENTY ;YES, DON'T CHECK TAPE POSITION
TXNE Q1,TB.REW ;REWIND?
JRST REWSTA ;YES, CLEAR REC CNTRS
MOVSI T1,(US.BOT) ;WERE WE AT BOT?
TDNE T1,UDBSTS(P3) ; ??
CALL GTHDEN ;YES - FIGURE OUT HARDWARE
MOVX T2,DO.FC
CALL RDREG
MOVN T3,T1 ;NEGATE FRM COUNT
ANDI T3,177777 ;ITS ONLY 16 BIT NEG NR
SKIPE T1,UDBERR(P3) ;ARE WE IN ERR RECOVERY?
JRST RTYATN ;YES
EXCH T3,IRBCNT(P4) ;SAVE RESIDUE (# RECORDS NOT SPACED)
SUB T3,IRBCNT(P4) ;CALCULATE # RECORDS MOVED
TXNE Q1,TB.REV ;IN REVERSE DIR?
MOVNS T3 ;YES, NEGATE
ADDM T3,UDBPS2(P3) ;UPDATE REC COUNT
MOVE T3,IRBCNT(P4) ;GET FRM COUNT AGAIN
JUMPE T3,NOCKER ;IF ALL RECORDS SPACED, DON'T CHECK ERR
RES1: TXNN Q2,DS.BOT!DS.EOT!DS.TM ;EARLY TERM OK IF EOT, BOT, OR TM
RESERR: JRST [ MOVX T1,IS.ERR!IS.DVE!IS.NRT ;INDICATE ERRORS
IORM T1,IRBSTS(P4)
CALL TM2RDR ;GET DEVICE REGISTERS
JRST SPENTY]
PUSH P,Q2 ;MUST EXPLICITLY CLEAR TM02 HERE
MOVE Q2,TM2ADR(P2) ;GET DEVICE ADDRESS
MOVX T2,DF.CLR ;CLEAR
CALL WTREG3 ; ...
POP P,Q2
; ...
; ...
;ALL RECORDS SPACED, DON'T BOTHER CHKING ERROR BITS
NOCKER: TXNN Q2,DS.TM ;TAPE MK?
JRST NOSTM ;NO
TXNE Q1,TB.REV ;IN REVERSE DIR?
SOSA UDBPS1(P3) ;YES, THEN -1
AOS UDBPS1(P3) ;NO, THEN +1 FILE
NOSTM: TXNN Q2,DS.BOT ;AT BOT?
JRST SPENTY ;NO
REWENT: SETZM UDBPS2(P3) ;YES, ZERO RECORDS
SETZM UDBPS1(P3) ;ZERO FILES
SETOM TU6HDN(P3) ;UNKNOWN DENSITY
JRST SPENTY ;NOW SET STATUS AND RET
REWSTA: MOVX T1,US.REW ;SET REWINDING
IORM T1,UDBSTS(P3) ; IN THE UDB
JRST REWENT ;
POPPOL: POP P,Q1 ;RESTORE REGISTERS
POP P,Q2
JRST TM2POL ;AND CHECK FOR REWIND INTERRUPTS
;COME HERE AT END OF SPACE DURING RETRY
RTYATN: JUMPN T3,RESERR ;FRAME COUNT 0?
TXNN Q1,TB.REV ;IN REVERSE DIRECTION?
AOSA UDBPS2(P3) ;NO FORWARD THE RECORD COUNTER
SOS UDBPS2(P3) ;YES, BACK IT UP
TRNN Q2,DS.BOT ;AT BOT?
JRST NOCKER ;NO, CONT
JRST RESERR ;CONFUSED ERROR RECOVERY
CHKNEW: MOVE T4,KDBIUN(P2) ;GET AOBJN POINTER
CHKNW1: SKIPE (T4) ;EXIST?
JRST CHKNW2 ;YUP DON'T BOTHER WITH IT
MOVE Q1,T4 ;GET UNIT NUMBER
SUB Q1,KDBIUN(P2)
HRRZS Q1 ;UNIT ONLY
CALL INIUNI ;INITALIZE UNIT
SKIPA ;NOT FOUND
AOS MTAJB0 ;TELL JOB0 ABOUT IT
CHKNW2: AOBJN T4,CHKNW1 ;GET NEXT UNIT
JRST POPPOL ;DO POLLING
;ROUTINE TO CHECK FOR ANY OBVIOUS FATAL ERRORS
;RET IF ERR (WITH IORB STATUS BITS SET)
;SKP RET IF OK
;RETURNS WITH C(T1) THE ERROR REGISTER, C(Q2) DRIVE STATUS REGISTER
;AND C(Q1) THE TABLE ENTRY FOR CURRENT
;FTLCHK MUST NOT BE CALLED UNLESS AN IORB EXISTS FOR THE UNIT
FTLCHK: MOVX Q1,IS.DVE!IS.DTE ;READY TO CLEAR THESE BITS
ANDCAM Q1,IRBSTS(P4) ;DO IT TO IT
HRRZ T4,UDBERR(P3) ;GET FUNCTION IF ERROR RECOVERY
SKIPN T4 ;IN ERROR RECOVERY?
LOAD T4,ISFCN,(P4) ;GET FN
SKIPG Q1,TM2FTB(T4) ;VALID?
JRST [ BUG.(CHK,TM2IF2,PHYM2,HARD,<PHYM2 - Illegal function on command done>,<<Q1,FNC>>,<
Cause: FTLCHK detected an illegal function code either in the IORB or UDBERR
at command done for a TM02/3 based tape drive.
Action: If this BUGCHK is reproducable, set it dumpable, and send in an SPR
with the dump and how to reproduce the problem.
Data: FNC - TM02/3 driver function code
>)
JRST FTLERR]
MOVSI T2,(DO.ER) ;GET ERROR REGISTER
CALL RDREG ; ...
TXNN T1,ER.RMR!ER.UNS!ER.FMT!ER.DTE!ER.ILR!ER.ILF!ER.CPA ;FATAL ERRS
JRST DOPCK ;NO FATAL ERRORS HERE
TXNE T1,ER.FMT ;FORMAT ERROR?
TXNN T1,ER.COR!ER.CS!ER.FCE!ER.NSG!ER.LRC!ER.INC ;YES. ANY TAPE MOTION?
JRST FTLERR ;NOT FORMAT ERR, OR FORMAT AND NO TAPE MOTION
JRST DOPCK ;FAKE FORMAT ERROR, RETRY
FTLERR: CALL TM2RDR ;READ ALL REGISTERS
MOVE T1,TM2REG+DR.ER(P2) ;GET ERROR REG AGAIN
TXNE T1,ER.UNS ;UNS ERR?
CALL PHYOFL ;DECLARE OFF-LINE
MOVX T3,IS.NRT!IS.ERR!IS.DVE ;SET BITS
IORM T3,IRBSTS(P4) ;PUT BITS IN IRBSTS
HRRZ T1,TM2REG+DR.DS(P2) ;GET STATUS REG
MOVX T3,IS.WLK ;CLEAR STATUS BIT
ANDCAM T3,IRBSTS(P4) ;CLEAR WRITE LOCK BIT
TXNE T1,DS.WRL ;WRITE LOCKED?
IORM T3,IRBSTS(P4) ;YES, SET THE BIT AGAIN
LDB T2,USYTYP ;IS THIS A TU77?
CAIE T2,.UTT77 ; ???
JRST TM2POL ;NO
MOVSI T2,(DO.TC) ;YES - SELECT SLAVE
HRR T2,UDBSLV(P3) ; ...
CALL WTREG
MOVX T2,DF.CLR ;NOW CLEAR IT
CALL WTREG
JRST TM2POL ;REWINDS DONE? (THEN RET)
DOPCK: MOVE Q2,T1 ;SAVE ERROR REGISTER
MOVSI T2,(DO.DS) ;GET DRIVE STATUS REGISTER
CALL RDREG ; ...
EXCH Q2,T1 ;PUT DS IN Q2, ER IN T1
TXNE Q1,TB.RD ;ON READ FCE IS LEGAL (IT IS SHORT RECORD)
JRST DOPCK1
TXNE Q1,TB.DOP ;DATA OPERATION?
TXNE Q2,DS.TM ;EOF ERROR (EOF CAUSES FCE ON RH11)
JRST DOPCK1 ;NON DATA OR EOF -- ALL OK
TXNE T1,ER.FCE ;FRAME COUNT ERROR CHECK
JRST FTLERR ;FATAL ERROR ON DATA OPERATIONS
DOPCK1: CAIE T4,IRFRUN ;UNLOAD FUNCTION?
TXNE Q2,DS.MOL ;NO, MEDIUM ON LINE?
SKIPA ;YES, OK
JRST FTLERR ;NO - QUITE FATAL.
TXNN T1,ER.OPI!ER.NEF ;OPI OR NEF?
RETSKP ;OK RET, NO ERR
TXNE Q1,TB.REV ;IF ERRS, OK IF REVERSE
TXNN Q2,DS.BOT ;AND AT BOT
JRST FTLERR ;BAD RET
RETSKP ;GOOD RET
SUBTTL Error Retry Entry Point
;P1, P2, P3, P4 SET UP
;ROUTINE PUTS ER BLK ADDRESS IN Q1
TM2ERR: SAVEQ
CALL SETIRB ;GET OUR IORB
HRRZ Q1,UDBERP(P3) ;GET ERROR BLOCK IF PRESENT
HLLZ T1,IRBSTS(P4) ;GET IORB STATUS
;IF UNS (OFF-LINE ERR), SOMEDAY SHOULD RETRY IN A MIN OR SO.
HRRZ T4,UDBERR(P3) ;GET FUNCTION IF ERROR RECOVERY
SKIPN T4 ;IN ERROR RECOVERY?
LOAD T4,ISFCN,(P4) ;NO, GET FN FROM IORB
MOVE T4,TM2FTB(T4) ;NOW TABLE ENTRY
TXNN T1,IS.NRT!IS.IER ;FATAL OR INHIBIT ERR RECOVERY?
JRST TMERTY ;NO, RETRY THE ERROR
SKIPE TU6EBP(P3) ;WAS FATAL ERR DURING RETRY?
JRST ABTNOS ;YES, WE ALREADY HAVE BEGIN DATA
AOS (P) ;SKIP RET FROM LOD1 - DONE WITH IORB
JRST LOD1 ;LOAD UP ERR BLK FOR FATAL ERR
;DO RETRY
TMERTY: HLR T4,T4 ;COPY LH OF FNTBL
TRZ T4,777770 ;SAVE ONLY RETRY INDEX IN RH
SKIPE UDBERC(P3) ;1ST TIME FOR HERE?
JRST NOT1ST ;NO
SETZM TU6ECL(P3) ;NOT DOING TAPE CLEAN
SKIPN T1,RTYBPT(T4) ;GET RETRY BYTE POINTER
JRST [ BUG.(INF,TM2IDX,PHYM2,HARD,<PHYM2 - Illegal retry byte pointer>,<<T1,RTYBPT>>,<
Cause: An error occured during a TM02/3 operation but the retry type for
the function code is illegal.
Action: If this BUGCHK is reproducable, set it dumpable, and send in an SPR
with the dump and how to reproduce the problem.
Data: RTYBPT - Retry byte pointer
>)
JRST ABTNOS] ;CALL IT FATAL
MOVEM T1,TU6EBP(P3) ;SAVE IT
MOVE T1,UDBPS2(P3) ;GET # RECORDS
SOS T1 ;CALCULATE WHERE WE SHOULD BE AFTER REPOS
TXNE T4,TB.REV ;IF IN FORWARD, WE WANT (CUR POSITION-1)
ADDI T1,2 ;IF REVERSE, WE WANT (CUR POSITION+1)
MOVEM T1,TU6EPS(P3) ;WHERE WE SHOULD BE SOMEDAY
MOVEI T1,RTYWRT+1 ;ON WRITE, THIS MANY RETRIES
TXNN T4,TB.WRT ;ARE WE RIGHT (WRITE)?
MOVE T1,[RTYCLN+1,,RTYOP+1] ;NO, THIS IS FOR READ
MOVEM T1,UDBERC(P3) ;THE RETRY COUNTER
CALL LOD1 ;LOAD UP ERR BLK WITH BEGIN DATA
JRST NXTBYT ;1ST TIME THRU TM2ERR
NOT1ST: MOVE T1,TU6EBP(P3) ;GET RETRY BYTE POINTER
ILDB T1,T1 ;LOOK AT NEXT OPERATION
CAIE T1,16 ;END OF RETRY?
JRST CKBOT ;NO
HLLZ T1,IRBSTS(P4) ;GET IORB STATUS
TXNN T1,IS.DTE ;WAS THERE DATA ERR?
JRST RTYNOE ;NO, WE'VE RECOVERED!
MOVE T1,RTYBPT(T4) ;GET BYTE POINTER
MOVEM T1,TU6EBP(P3) ;RESET IT
SETZM TU6ECL(P3) ;NOT DOING TAPE CLN SEQUENCE
HRRZ T1,UDBERC(P3) ;GET ABORT COUNTER
SOS T1 ;ANOTHER RETRY - SEE IF WE'VE LOST
HRRM T1,UDBERC(P3) ;SAVE IT
JUMPN T1,NXTBYT ;IF NOT 0, TRY AGAIN
TXNE T4,TB.DOP ;DATA OP?
TXNN T4,TB.RD ;WRITE OR READ?
JRST ABTRTY ;NONDATA OR WRITE - WE'VE FAILED
HLRZ T1,UDBERC(P3) ;GET TAPE CLNR COUNTER
SOJE T1,ABTRTY ;RUN OUT OF RETRIES? - YES
HRLM T1,UDBERC(P3) ;NO, UPDATE CLN COUNTER
MOVX T1,RTYOP+1 ;NOW RESET (RH) COUNTER
HRRM T1,UDBERC(P3) ;FOR NEXT CLEAN RETRY
MOVE T1,RTYBPT+1(T4) ;GET CLEANER SEQ BYTE POINTER
MOVEM T1,TU6EBP(P3) ;SAVE FOR USE LATER
SETZM TU6EBC(P3) ;RESET COUNT FOR USE IF WE HIT BOT
SETOM TU6ECL(P3) ;WE ARE DOING A CLEAN
JRST NXTBYT ;NOW DO NEXT OPERATION
CKBOT: SKIPN TU6ECL(P3) ;DOING TAPE CLEAN?
JRST NXTBYT ;NO DON'T CHECK BOT
HLLZ T1,IRBSTS(P4) ;GET STATUS
IFE OPIFIX,<SKIPE UDBPS2(P3)>; ARE WE ALMOST AT BOT?
TXNE T1,IS.BOT ;OR DID WE HIT BOT?
SKIPA T1,[CLNREC] ;YES, FIGURE OUT HOW TO FUDGE BYTE POINTER
JRST NXTBYT ;NO, CONTINUE NORM RETRY
LOAD T3,ISFCN,(P4) ;GET ORIGINAL FN
MOVE T3, TM2FTB(T3) ;GET FLAGS
TXNE T3,TB.WRT ;IS IT A WRITE?
JRST NXTBYT ;WRITE RETRY WON'T EVER HIT BOT SO NO FUDGE
TXNN T3,TB.REV ;ADD 1 IF FORWARD
AOS T1 ;DO IT ON FORWARD
SUB T1,TU6EBC(P3) ;SUBT # RECORDS SPACED
LSH T1,1 ;TIMES 2 (COMMENTS ASSUME CLNREC=5)
AOS T1 ;ON FORWARD, SKIP (6-CNT)*2+1 BYTES
CAIL T1,1 ;ON REVERSE, SKIP (5-CNT)*2+1 BYTES
IFN OPIFIX,<CAILE T1,^D9>; RESULT MUST BE BETWEEN 1 AND 9
IFE OPIFIX,<CAILE T1,^D11>; BETWEEN 1 AND 11 IF OPI NOT FIXED
JSP CX,CNFERR ;BAD INCR, WE ARE CONFUSED
IFE OPIFIX,<SKIPE UDBPS2(P3)>; IF ALMOST AT BOT, FUDGE 1 LESS
IBPLP: IBP TU6EBP(P3) ;INCR THE POINTER
SOJG T1,IBPLP ;ANOTHER?
NXTBYT: AOS TU6EBC(P3) ;ANOTHER BYTE FOR THE COUNTER
ILDB T3,TU6EBP(P3) ;GET NEXT FUNCTION
CAIE T3,17 ;IS IT CHECK POSITION OPERATION?
JRST NOTCKP ;NO
MOVE T1,UDBPS2(P3) ;YES, GET OUR POSITION
CAMN T1,TU6EPS(P3) ;ARE WE WHERE WE WANT TO BE?
JRST NXTBYT ;YES, ALL OK
JSP CX,CNFERR ;POSITION CONFUSED,SIGNAL ERROR
JRST ABTNOS ;BOMB OUT
NOTCKP: CAIE T3,16 ;END OF RETRY?
SKIPG T3 ;IS FUNCTION VALID?
JRST [ BUG.(INF,TM2IRF,PHYM2,HARD,<PHYM2 - Illegal function during retry>,<<T3,FNC>>,<
Cause: An illegal function code was encountered during a TM02/3 retry
operation.
Action: If this BUGCHK is reproducable, set it dumpable, and send in an SPR
with the dump and how to reproduce the problem.
Data: FNC - Retry function code
>)
JRST ABTNOS] ;IMAGINE FATAL
HRRM T3,UDBERR(P3) ;SAVE FUNCTION
CALL SETIO ;SET UP FOR I/O
CALL CDSSIO(T1) ;START IO
;SHOULD RETRY EVERY MIN OR SO
JRST ABTNOS ;COULDN'T START UP RETRY OPERATION
RET ;AND WAIT
RTYNOE: TXNE T1,IS.NRT ;HARD ERRS SHOULDN'T EVER GET HERE
BUG.(CHK,TM2HER,PHYM2,HARD,<TM2ERR - IS.HER set on successful retry>,,<
Cause: A retry operation has been completed succesfully but bit IS.HER
indicating a hard error was set in the IORB. Error recovery should
not be done for hard errors.
Action: If this BUGCHK is reproducable, set it dumpable, and send in an SPR
with the dump and how to reproduce the problem.
>,,<DB%NND>) ;[7.1210]
MOVX T1,IS.ERR ;WE DID IT! CLEAR ERR BIT
ANDCAM T1,IRBSTS(P4) ;AND SKP RETURN
TXNN T4,TB.WRT ;ARE WE WRTING?
AOSA UDBSRE(P3) ;NO, A SOFT READ ERR
AOS UDBSWE(P3) ;YES, A SOFT WRITE ERR
SOS UDBERC(P3) ;FIX UP THE RETRY COUNT
JRST ABTNOS
;HERE WHEN ERROR RECOVERY GETS CONFUSED(FLAKEY HARDWARE W I L L DO IT)
CNFERR: HRRZ T1,UDBADR(P3) ;GET UNIT NUMBER
MOVE Q1,TM2ADR(P2) ;GET KNOTROLLER NUMBER
HRRZ T3,CDBADR(P1) ;GET CHANNEL NUMBER
BUG.(CHK,TM2RFU,PHYM2,HARD,<PHYM2 - Error recovery confused>,<<T1,UNIT>,<Q1,CONT>,<T3,CHAN>>,<
Cause: The error recovery process has become confused. This could be caused by
a malfunction in the hardware.
Action: Field Service should check out the hardware. If the hardware checks
out, and this BUGCHK is reproducable, set it dumpable, and send in an
SPR with the dump and how to reproduce the problem.
Data: UNIT - Unit number
CONT - Controller number
CHAN - Channel number
>)
MOVSI T1,(IS.ERR!IS.NRT) ;INDICATE RATHER HARD ERR
IORM T1,IRBSTS(P4) ; ...
JRST ABTNOS ;AND ABORT
ABTRTY: ;WE RAN OUT OF RETRIES
TXNN T4,TB.WRT ;ARE WE WRTING?
AOSA UDBHRE(P3) ;NO, A HARD READ ERR
AOS UDBHWE(P3) ;YES, A HARD WRITE ERR
ABTNOS: AOS (P) ;SKIP RET FROM LODE
HRRZ Q1,UDBERP(P3) ;GET ERROR BLOCK
SKIPN TU6EBP(P3) ;DONE ANY RETRIES?
JRST LODE ;NO, LOAD UP ERR BLK WITH END DATA
TXNN T4,TB.WRT ;YES, IN A WRITE?
JRST RDCNT ;NO
MOVEI T1,RTYWRT+1 ;YES, CALCULATE # RETRIES DONE
SUBM T1,UDBERC(P3) ;RESIDUE
JRST LODE ;NOW LOAD UP ERR BLK
RDCNT: HLRZ T1,UDBERC(P3) ;GET CLN COUNTER
IMULI T1,RTYOP ;CONVRT JUST TO # RETRIES
ADD T1,UDBERC(P3) ;ADD IN REGULAR RETRIES
MOVEI T2,<RTYCLN+2>*RTYOP+1 ;COUNT AT START
SUB T2,T1
HRRZM T2,UDBERC(P3) ;SAVE # RETRIES
JRST LODE ;NOW LOAD UP ERR BLK
;LOAD UP ERR BLK AT START OF ERR
;C(Q1)=ERR BLK
LOD1: JUMPE Q1,R ;IF NO ERROR BLOCK, PUNT
MOVE T1,Q1 ;COPY ERROR BLOCK
MOVE T2,[-NITAB,,ITAB] ;POINTER TO INFORMATION TABLE
CALL SEBCPY ;COPY INFORMATION
JFCL
MOVS T1,UDBPS1(P3) ;GET FILE
HRR T1,UDBPS2(P3) ;AND RECORD (JUST AFTER ERROR)
MOVEM T1,SEBDAT+MB%LOC(Q1) ;AND SAVE AS LOCATION OF ERROR
MOVEI T1,SEBDAT+MB%REG(Q1) ;MOVE REGISTERS TO HERE
MOVEM T1,T2 ;SAVE FOR RH OF BLT
ADDI T2,11 ;11 WDS
HRLI T1,TM2REG(P2) ;GET REGISTERS FROM HERE
HRLI T2,(BLT T1,) ;SET UP INST FIELD
XCT T2 ;DO IT
RET
;LOAD UP ERR BLK AT END
LODE: SETZM TU6EBP(P3) ;RESET ERROR BYTE POINTER
JUMPE Q1,R ;IF NO ERROR BLOCK, CANT SAVE DATA
MOVE T3,[-12,,TM2REG] ;CASE FOR START
ADD T3,P2 ;POINTS TO REGISTER DATA
MOVEI T2,SEBDAT+MB%REG(Q1) ;REGISTER DATA GOES HERE
LDELP: MOVE T1,(T3) ;GET REGISTER
HRLM T1,(T2) ;PUT IT
AOS T2 ;NEXT WD
AOBJN T3,LDELP ;DONE?
MOVE T1,TM.CNI(P2) ;GET CONI
MOVEM T1,SEBDAT+MB%CIF(Q1) ;SAVE
MOVE T1,TM.CS1(P2) ;GET TCR
MOVEM T1,SEBDAT+MB%D1F(Q1) ;SAVE
MOVE T1,TM.DBF(P2) ;GET BAR
MOVEM T1,SEBDAT+MB%D2F(Q1) ;SAVE
RET
;TABLE OF ITEMS TO COPY INTO ERROR BLOCK
ITAB: SEBPTR MB%CS0,SBTWD,CDBCS0(P1) ;CHANNEL STATUS 0
SEBPTR MB%CS1,SBTWD,CDBCS1(P1) ;CHANNEL STATUS 1
SEBPTR MB%CS2,SBTWD,CDBCS2(P1) ;CHANNEL STATUS 2
SEBPTR MB%CC1,SBTWD,CDBCC1(P1) ;CCW 1
SEBPTR MB%CC2,SBTWD,CDBCC2(P1) ;CCW 2
SEBPTR MB%ICR,SBTWD,CDBICR(P1) ;INITIAL CONTROL REGISTER
SEBPTR MB%CNI,SBTWD,TM.CNI(P2) ;CONI INITIAL
SEBPTR MB%D1I,SBTWD,TM.CS1(P2) ;TCR
SEBPTR MB%D2I,SBTWD,TM.DBF(P2) ;BAR/DBF
NITAB==.-ITAB
SUBTTL Routine To Poll Slaves To See If Done Rewind
TM2POL: PUSH P,P4 ;SAVE PERMANENT ACCUMULATORS
MOVEI P4,11 ;GUARD AGAINST BROKEN HARDWARE
PUSH P,Q2 ;WE WILL CLOBBER IT
PUSH P,P3 ;IN CASE WE MUST SWITCH UNITS
PUSH P,[0] ;VARIABLE FOR REWIND DONE
POLAGN: MOVSI T4,-TM2SLC ;[7457] Load AOBJN for number possible slaves
SETOM T1 ;SAYS THAT WE HAVEN'T READ A REGISTER YET
POLLP: ADD T4,P2 ;BUILD POINTER TO KDB ENTRY
MOVE P3,KDBUDB(T4) ;GET UDB ADDRESS FOR THIS SLAVE
SUB T4,P2 ;FUDGE IT BACK
MOVE Q2,TM2ADR(P2) ;GET TM02 ADDRESS
JUMPE P3,TM2PNO ;UNIT NOT KNOWN
MOVX T2,DO.TC ;READY TO LOAD TAPE CNTL REGISTER
TRO T2,(T4) ;SELECT THIS SLAVE
CALL WTREG3 ;...
MOVX T2,DO.DS ;NOW GET STATUS REGISTER
CALL RDREG3
HLLZ T2,UDBSTS(P3) ;GET STATUS OF DRIVE
MOVX T3,US.BOT!US.REW!US.WLK ;CLEAR THESE BITS
ANDCAM T3,UDBSTS(P3) ;DO IT
TXNN T1,DS.BOT ;AT BOT?
TXZA T3,US.BOT ;NO
JRST [SETZM UDBPS1(P3) ;YES, ZERO REC CNTRS
SETZM UDBPS2(P3)
SETOM TU6HDN(P3) ;UNKNOWN DENSITY
JRST .+1]
TXNN T1,DS.PIP ;REWINDING? (PIP=1?)
TXZ T3,US.REW ;NO, CLEAR BIT
TXNN T1,DS.WRL ;WRITE LOCKED?
TXZ T3,US.WLK ;NO
IORM T3,UDBSTS(P3) ;STORE THE STATUS
TXNE T2,US.REW ;ARE WE REWINDING?(T2 IS OLD UDBSTS)
JRST [MOVX T2,US.REW ;OLD STATUS WAS REWINDING, CHECK
TDNE T2,UDBSTS(P3) ;NEW STATUS FOR CHANGE
JRST .+1 ;CONTINUE LOOP
MOVEM P3,(P) ;SAVE UDB WHICH FINISHED REWIND
MOVX T2,US.PSI ;SET REWIND PSI
IORM T2,UDBSTS(P3)
LDB T2,USYTYP ;IS THIS A TU77
CAIE T2,.UTT77 ; ??
JRST .+1 ;NO
PUSH P,T1 ;YES - SAVE T1
MOVX T2,DF.CLR ;AND CLEAR IT
CALL WTREG3 ; ...
POP P,T1 ;RESTORE
JRST .+1] ;AND CONTINUE LOOP
CALL TM2OFC ;DO OFFLINE CHECK
TXNN T1,DS.SLA!DS.SSC ;SLAVE ATTENTION OR SLAVE STATUS CHANGE?
JRST TM2PNO ;NO
LDB T2,USYTYP ;YES - IS IT A TU77?
CAIE T2,.UTT77 ; ??
JRST TM2PNO ;NO
PUSH P,T1 ;YES - SAVE T1
MOVX T2,DF.CLR ;MUST CLEAR IT
CALL WTREG3 ; ...
POP P,T1 ;RESTORE
TM2PNO: AOBJN T4,POLLP ;DO REST OF SLAVES
JUMPGE T1,TM2NRD ;JUMP IF WE HAVE READ THE STATUS REGISTER
MOVE Q2,TM2ADR(P2) ;IF NOT, READ IT NOW
MOVX T2,DO.DS
CALL RDREG3 ;READ THE DRIVE STATUS REGISTER
TM2NRD: TRNE T1,DS.SSC!DS.ERR ;IS SSC OR ERR UP?
JRST FNDCLR ;YES, FIND AN INACTIVE DRIVE FOR DRIVE CLEAR
TM2BCK: POP P,P3 ;RECOVER POSSIBLE REWIND DONE UDB
JUMPE P3,TM2NR1 ;IS THERE ONE?
SKIPN -2(P) ;YES, IS IT LEGAL TO START UP
CALL PHYRWD ;YES, NOTIFY PHYSIO, MAY START IO
TM2NR1: POP P,P3
POP P,Q2
POP P,P4
RET
FNDCLR: MOVE T2,KDBIUN(P2) ;GET AOBJN POINTER
FNDLP: SKIPN P3,(T2) ;IS ENTRY 0?
JRST RDYCLR ;YES, DO DRIVE CLEAR HERE
MOVE T3,UDBSTS(P3) ;GET UDB STATS
TXNE T3,US.REW ;ARE WE REWINDING?
AOBJN T2,FNDLP ;YES, TRY NEXT DRIVE
RDYCLR: SUB T2,KDBIUN(P2) ;SUBT AOBJN POINTER BASE
HRLI T2,(DO.TC) ;IF ALL REWINDING, DO IT TO 7
CALL WTREG3 ;SELECT IT
MOVX T2,DF.CLR ;SET UP TO DO CLEAR
CALL WTREG3 ;LOAD IT INTO CONTRL REGISTER (0)
SOJN P4,POLAGN ;BEGIN POLL AGAIN (THANX TO MATEL ENG)
BUG.(CHK,TM2CCI,PHYM2,HARD,<PHYM2 - TM02 SSC or SLA won't clear>,,<
Cause: 11 (octal) attempts to clear a TM02/3 SSC or SLA have failed.
Action: This is a hardware problem. Field Service should check out the TM02 or
TM03 controller.
>,,<DB%NND>) ;[7.1210]
JRST TM2BCK ;HOPE AND HOPE
;HERE TO CHECK IF ONLINE/OFFLINE STATUS CHANGE
TM2OFC: SAVET ;SAVE TEMPS
HLLZ T2,UDBSTS(P3) ;GET CURRENT STATUS
TXNN T2,US.OFS ;IS IT OFFLINE?
JRST TM2ONC ;YES CHECK TO SEE IF DRIVE WENT ONLINE
TXNN T1,DS.MOL ;IS DRIVE ONLINE
RET ;NO STILL OFFLINE
CALLRET PHYONL ;CHANGE OF STATUS SET IT ONLINE
TM2ONC: TXNE T1,DS.MOL ;CURRENT STATE IS ONLINE IS IT REALLY
RET ;YES ALL OK
CALLRET PHYOFL ;NO DECLARE OFFLINE
SUBTTL TM02 Function Table
;EACH ENTRY MUST BE NON-0
;1B0 ;ILLEGAL FUNCTION
TB.WRT==1B1 ;THIS FUNCTION WRITES ON TAPE
TB.REV==1B2 ;THIS OPERATION MOVES TAPEIN REVERSE DIRECTION
TB.DOP==1B3 ;THIS IS A DATA OPERATION
TB.SPC==1B4 ;THIS IS A SPACE OPERATION
TB.RD==1B5 ;THIS IS A READ
TB.ERA==1B6 ;ERASE OPERATION
TB.TM==1B7 ;WRITE TAPE MARK
TB.NFC==1B8 ;DON'T LOAD FRM COUNT WHEN DOING OPERATION
TB.REW==1B9 ;OPERATION IS A REWIND
;BITS 15,16,17 CONTAIN AN INDEX TO RTYBPT TO TELL US HOW
;TO RETRY AN OPERATION (0 IF NO RETRY)
;BITS 30-35 CONTAIN THE EQUIVALENT TM02 FUNCTION
TM2FTB: 1B0 ;0- ILLEGAL
TB.DOP!TB.RD!TB.NFC!2B17!DF.RDF ;1- READ FORWARD (IRFRED)
1B0 ;2- ILL (RD FMT)
TB.WRT!TB.DOP!1B17!DF.WTF ;3- WRITE FORWARD (IRFWRT)
1B0 ;4- ILL (WRT FMT)
1B0 ;5- ILL (SEEK)
TB.SPC!DF.SPF ;6- SPCE FORWARD
TB.REV!TB.SPC!DF.SPR ;7- SPCE REVERSE
TB.WRT!TB.TM!6B17!DF.WTM ;10- WRITE TM
TB.WRT!TB.ERA!TB.NFC!DF.ERA ;11- ERASE
TB.NFC!TB.REW!DF.REW ;12- REWIND
TB.NFC!DF.UNL ;13- UNLOAD
TB.REV!TB.DOP!TB.RD!TB.NFC!4B17!DF.RDR ;14- READ REVERSE
1B0 ;15- ILL (RECOVERY RD)
1B0 ;16- ILL (USED FOR END OF RECOVERY ACTION)
1B0 ;17- ILL (USED FOR CHECK POSITION ACTION)
;CONVT SOFTWARE MODE CODE TO TM02/3 FMT CODE (1B0 IS ILLEGAL)
;LH IS #FRAMES/BYTE (0 MEANS FRAMES=BYTES), RH IS TM02 FORMAT TYPE
MTBFMT: 1B0 ;0 - ILLEGAL FMT
5,,0 ;1 - COR DMP (LH MEANS 5 FRAMES PER BYTE)
1B0 ;2 - SIXBIT (7TRK) ILLEGAL
2 ;3 - 7-BIT (ASCII)
3 ;4 - 8-BIT (COMPAT)
;CONVT SOFTWARE DENS CODE TO TM02/3 DENSITY CODE (1B0 IS ILLEGAL)
MTBDEN: 1B0 ;0 - ILLEGAL DEN
0 ;1 - 200BPI
1 ;2 - 556BPI
2 ;3 - 800BPI
4 ;4 - 1600BPI
;RETRY TABLES TO TELL HOW TO RETRY
RTYBPT: 0 ;ILLEGAL RETRY
POINT 4,TBRWRT ;WRITE RETRY
POINT 4,TBRRF ;READ FORWARD RETRY
POINT 4,TBRRFC ;READ FORWARD TAPE CLEAN
POINT 4,TBRRR ;READ REVERSE RETRY
POINT 4,TBRRRC ;READ REVERSE TAPE CLEAN
POINT 4,TBRWTM ;WRITE TAPE MARK
0 ;ILLEGAL
;THE FOLLOWING MACROS HELP ME GET AROUND SOME SHORTCOMINGS IN MACRO:
;NOTE: THE MACRO'S MUST BE FIXED IN THE UNLIKELY EVENT THAT
;SOMEBODY WANTS TO CHANGE TO A BYTE SIZE WHICH DOESN'T GO
;EVENLY INTO 36(10). RIGHT NOW IT'S 4.
DEFINE FOO (XXA) <
WD==0
BYC==0
ZZ==0 ;FLIP-FLOP
IRP XXA,<
IFE ZZ,<RP==XXA>
IFN ZZ,<FOO1 RP,XXA>
ZZ==ZZ+1
IFE ZZ-2,<ZZ==0>>
IFN BYC,<EXP WD>>
DEFINE FOO1 (A1,A2) <
REPEAT A1,<
WD==WD+<A2>B<4*BYC+3>
BYC==BYC+1
IFGE BYC-^D9, <
EXP WD
WD==0
BYC==0>>>
TBRWRT: BYTE (4) IRFBSB,IRFERG,17,IRFWRT,16
;WRITE RETRY - SPACE REVERSE, ERASE, CHECK POSITION, WRITE
TBRWTM: BYTE (4) IRFBSB,IRFERG,17,IRFWTM,16
;WTM RETRY - SPACE REVERSE, ERASE, CHECK POS, WTM, EOR
TBRRF: BYTE (4) IRFBSB,17,IRFRED,16
;READ FORWARD RETRY - SPACE REVERSE, CHECK POSITION, READ FORWARD
TBRRR: BYTE (4) IRFFSB,17,IRFRDR,16
;READ REVERSE RETRY - SPACE FORWARD, CHECK POSITION, READ REVERSE
TBRRFC: FOO<CLNREC+1,IRFBSB, CLNREC,IRFFSB, 1,17, 1,IRFRED, 1,16>
;RD FORWARD TAPE CLEAN: 6 SP REVERSE, 5 SP FORWARD, CHECK POSITION, RD FORWARD
TBRRRC: FOO<CLNREC,IRFBSB, CLNREC+1,IRFFSB, 1,17, 1,IRFRDR, 1,16>
;RD REVERSE TAPE CLEAN: 5 SP REVERSE, 6 SP FORWARD, CHECK POSITION, RD REVERSE
SUBTTL End of PHYM2
TNXEND
END