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documentation/v1515.bwr
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BEWARE FILE FOR RSX-20F V15-15:
1) INSTALLATION
Follow the procedure for building the front-end file system outlined in the
appropriate software installation guide for your system (TOPS-10 Software
Installation Guide, chapter 6; or TOPS-20 KL Model B Installation Guide,
chapter 4).
TOPS-10 customers with DECtapes will notice that three tapes have been supplied
rather than two. Tape 'C' may be copied to the disk structure after finishing
tapes 'A' and 'B', and running SAV, as outlined in section 6.1.1 of the TOPS-10
Software Installation Guide. To install tape 'C', use the following procedure:
1) Remove the tape from drive 0 and mount Dectape 'C'.
2) Type a control-\ on the CTY to invoke the parser:
PAR%MCR MOU <return>
MOU>DT0: <return>
MOU -- MOUNT COMPLETE
MOU><control-Z>
<control-\>
PAR%MCR PIP <return>
PIP>DB0:=DT0: <return>
PIP>TT:=DB0:/LI <return>
PIP><control-Z>
<control-\>
PAR%MCR DMO <return>
DMO>DT0: <return>
DMO -- DISMOUNT COMPLETE
DMO><control-Z>
At this point you can boot the system from disk as described in section 6.1.3.
2) CHANGE TO KLI DIALOG
An additional question has been added to the KLI dialog relating to
the MCA25 Cache Page Table. This question will only appear if the MCA25 is
present. The MCA25 is divided into two parts which may be used either
selectively or together. Normally one should use both, but for maintenance
purposes either half may be used exclusively. An example of the new KLI
dialog follows:
Sample TOPS-10 dialog:
RSX-20F VE15-15 17:00 17-SEP-84
[SY0: redirected to DB0:]
[DB0: mounted]
KLI -- VERSION VA15-15 RUNNING
KLI -- ENTER DIALOG [NO,YES,EXIT,BOOT]?
KLI>YES
KLI -- KL10 S/N: 2476., MODEL B, 60 HERTZ
KLI -- KL10 HARDWARE ENVIRONMENT:
MCA25 CACHE PAGER UPGRADE
MOS MASTER OSCILLATOR
EXTENDED ADDRESSING
INTERNAL CHANNELS
CACHE
KLI -- SELECT PAGE TABLE [FILE,BOTH,0,1]?
KLI>BOTH
KLI -- PAGE TABLE SELECTED: BOTH
KLI -- RELOAD MICROCODE [YES,VERIFY,FIX,NO]?
KLI>YES
KLI -- MICROCODE VERSION 2.0[400] LOADED
KLI -- RECONFIGURE CACHE [FILE,ALL,REVERSE,YES,NO]?
KLI>ALL
KLI -- ALL CACHE ENABLED
KLI -- CONFIGURE KL MEMORY [FILE,ALL,REVERSE,YES,NO]?
KLI>ALL
LOGICAL MEMORY CONFIGURATION.
ADDRESS SIZE INT TYPE CONTROLLER
00000000 768K 4 MF20 10
KLI -- LOAD KL BOOTSTRAP [FILE,YES,NO,FILENAME]?
KLI>
KLI -- WRITE CONFIGURATION FILE [YES,NO]?
KLI>
KLI -- CONFIGURATION FILE WRITTEN
KLI -- BOOTSTRAP LOADED AND STARTED
BOOT V2(17)
BOOT>
Sample TOP-20 dialog:
RSX-20F VB15-15 17:00 17-SEP-84
[SY0: redirected to DB0:]
[DB0: mounted]
KLI -- VERSION VB15-15 RUNNING
KLI -- ENTER DIALOG [NO,YES,EXIT,BOOT]?
KLI>YES
KLI -- KL10 S/N: 2476., MODEL B, 60 HERTZ
KLI -- KL10 HARDWARE ENVIRONMENT:
MCA25 CACHE PAGER UPGRADE
MOS MASTER OSCILLATOR
EXTENDED ADDRESSING
INTERNAL CHANNELS
CACHE
KLI -- SELECT PAGE TABLE [FILE,BOTH,0,1]?
KLI>BOTH
KLI -- PAGE TABLE SELECTED: BOTH
KLI -- RELOAD MICROCODE [YES,VERIFY,FIX,NO]?
KLI>YES
KLI -- MICROCODE VERSION 1.0[357] LOADED
KLI -- RECONFIGURE CACHE [FILE,ALL,REVERSE,YES,NO]?
KLI>ALL
KLI -- ALL CACHE ENABLED
KLI -- CONFIGURE KL MEMORY [FILE,ALL,REVERSE,YES,NO]?
KLI>ALL
LOGICAL MEMORY CONFIGURATION.
ADDRESS SIZE INT TYPE CONTROLLER
00000000 768K 4 MF20 10
KLI -- LOAD KL BOOTSTRAP [FILE,YES,NO,FILENAME]?
KLI>
KLI -- WRITE CONFIGURATION FILE [YES,NO]?
KLI>
KLI -- CONFIGURATION FILE WRITTEN
KLI -- BOOTSTRAP LOADED AND STARTED
BOOT V10.0(152)
BOOT>
3) TEMPORARY PATCHES FOR AUTOBAUD PROBLEM
We have changed the autobaud algorithm which appeared in version 14-45 of
RSX-20F to include support for speeds up to 9600 baud. Unfortunately, in
so doing we have found that in some instances the front end will incorrectly
determine the speed of an autobaud line. Rather than hold up the release of
version 15-15 of RSX-20F, we have decided to ship 15-15 unpatched, and list
here two patches which should help to alleviate the problem. These patches
need only be applied if your users experience autobaud problems. Moreover,
already built into version 15-15 is a new feature whereby if a user does get
set to the wrong speed (indicated by garbage appearing on the screen), he/she
can type two consecutive break characters in order to reenter autobaud detect.
We are continuing to investigate this problem, and when a final resolution is
determined, the following patches will become unsupported. Also, please note
that patch B has the side effect of dropping autobaud support for devices at
150 baud. If you need support for autobaud at 150 baud, do not apply patch B.
The following patch is edit A to RSX20F V15-15.
To apply this patch do the following:
1) Shut down the system by typing the following:
^\ ! Control-\ to invoke the PARSER
PAR>SHUT ! Causes TOPS-10/20 to stop running
2) Now reboot the Console Front End by setting the switches on
the PDP-11 to 203 (switches 0,1, and 7 up, others down) and
pressing the ENABLE and SWITCHES load switches on the KL10
front panel.
3) Type ^\ (Control-\) to invoke the PARSER
4) In response to the PAR> prompt type the following (text
beginning with an exclamation mark or semicolon is a comment
and need not be typed on the console terminal):
SET CONSOLE MAINTENANCE
SET MEMORY ELEVEN
! .PAT2.: MOV STSW0(R5),-(SP) ; FETCH CURRENT SPEED
DEPOSIT 120=16546
DEPOSIT NEXT=4
! BIC #S0.MSK,(SP) ; DROP FLAGS
DEPOSIT NEXT=42716
DEPOSIT NEXT=140000
! CMP R3,(SP)+ ; DO SPEEDS MATCH?
DEPOSIT NEXT=20326
! BEQ 10$ ; YES -- GO ON
DEPOSIT NEXT=1407
! BIC #^C<S0.MSK>,STSW0(R5) ; NO -- FLUSH OLD SPEED
DEPOSIT NEXT=42765
DEPOSIT NEXT=37777
DEPOSIT NEXT=4
! BIS R3,STSW0(R5) ; SAVE NEW SPEED
DEPOSIT NEXT=50365
DEPOSIT NEXT=4
! JMP TTINPB ; DISMISS AND WAIT FOR MORE
DEPOSIT NEXT=137
DEPOSIT NEXT=37060
! 10$: BIC #TT.ABW,STSW1(R5) ; TERMINATE AUTO BAUD WAIT
DEPOSIT NEXT=42765
DEPOSIT NEXT=10
DEPOSIT NEXT=6
! CALL .DHSPD ; SET SPEED
DEPOSIT NEXT=4737
DEPOSIT NEXT=40334
! JMP $DHINP+310 ; RETURN FROM PATCH
DEPOSIT NEXT=137
DEPOSIT NEXT=36330
!
! BIC #TT.IGN,STSW1(R5) ; NEXT CHAR OK
DEPOSIT 36272=10000
! JMP .PAT2. ; ENTER PATCH
DEPOSIT 36324=137
DEPOSIT NEXT=120
! .ASCII /5A/ ; CALL THIS EDIT A
DEPOSIT 1044=40465
SET CONSOLE OPERATOR
5) Now type "MCR SAV<CR>"
6) In response to the prompt SAV> type "SY0:/WB<CR>"
This will save the patched RSX20F system image on the front-end
file system.
The following patch is edit B to RSX20F V15-15.
To apply this patch do the following:
1) Shut down the system by typing the following:
^\ ! Control-\ to invoke the PARSER
PAR>SHUT ! Causes TOPS-10/20 to stop running
2) Now reboot the Console Front End by setting the switches on
the PDP-11 to 203 (switches 0,1, and 7 up, others down) and
pressing the ENABLE and SWITCHES load switches on the KL10
front panel.
3) Type ^\ (Control-\) to invoke the PARSER
4) In response to the PAR> prompt type the following (text
beginning with an exclamation mark is a comment and need
not be typed on the console terminal):
SET CONSOLE MAINTENANCE
SET MEMORY ELEVEN
! LSPTAB::
! .BYTE 174 ; 110 BAUD ^C
! .BYTE 015 ; 300 BAUD CR
DEPOSIT 32610=6574
! .BYTE 215 ; 300 BAUD CR
! .BYTE 003 ; 300 BAUD ^C
DEPOSIT NEXT=1615
! .BYTE 203 ; 300 BAUD ^C
! HSPTAB::
! .BYTE 200 ; 300 BAUD CR OR ^C
DEPOSIT NEXT=100203
! LSPSPD::
! .BYTE 00 ; 110 BAUD ^C
! .BYTE 02 ; 300 BAUD CR
DEPOSIT 32632=1000
! .BYTE 02 ; 300 BAUD CR
! .BYTE 02 ; 300 BAUD ^C
DEPOSIT NEXT=1002
! .BYTE 02 ; 300 BAUD ^C
! HSPSPD::
! .BYTE LSP.IG!02 ; 300 BAUD CR OR ^C
DEPOSIT NEXT=101002
! .ASCII /5B/ ; CALL THIS EDIT B
DEPOSIT 1044=41065
SET CONSOLE OPERATOR
5) Now type "MCR SAV<CR>"
6) In response to the prompt SAV> type "SY0:/WB<CR>"
This will save the patched RSX20F system image on the front-end
file system.
4) TOPS-20 XON/XOFF HANDLING
The front end now handles XON/XOFF without need of intervention from the
monitor. A patch to TOPS-20 is required in order to bring it in line with
this new "protocol". This patch should only be installed if you install
version 15-15 of RSX-20F, with expections noted below. In addition to
appearing here, it will also be on Autopatch tape 9 for TOPS-20, as a separate
REL file; and should be on Autopatch tape 10, incorporated in the usual manner.
(TOPS-10 already has the appropriate changes in version 7.02 of the monitor.)
**********
[SYMPTOM]
Terminal lines appear to lose an occasional XON and possibly
XOFFs as well. This edit replaces edit 2906.
[DIAGNOSIS]
When RSX20F receives an XOFF, it stops output immediately and
passes the XOFF through to TOPS20 so that TOPS20 can stop sending
characters. TOPS20 will turn around and tell the front-end to stop
output which is redundant as it forces RSX20F to go through the same
code it executed when it first received the XOFF.
When RSX20F receives an XON, it does nothing other than pass the
character through to TOPS20. TOPS20 will then see the XON and tell
RSX20F to start output again.
It is unclear exactly how it happens, but it appears that this
scenario produces a race condition which can make 20F appear to lose
the XON in rare circumstances.
[CURE]
Eliminate any possibility of race conditions. Allow RSX20F to
control both the starting and stopping of output, rather than just the
stopping. Create a bit in TTSTAT (TT%XFF) that allows TOPS20 to force
the front-end to set/clear the XOFFed state. This has to be done when
the monitor needs to specifically overide XON/XOFF. These places are
at .STPAR+25 (where TT%PGM mode is turned off,) TTYDE4+31 (where
terminal lines are reset,) and at TTCBF7+1 (where output buffers are
flushed.) A new routine TTXONF has been created to perform this
overide task. It will need to set TT%XFF only if an XOFF state exists
(i.e. TT%RXF is set.)
This edit requires a version of RSX-20F that uses the new
protocol for XON and XOFF. Versions 15-06 or greater may be used.
Version 14-45 may be used only if edit A is applied. Note that
version 14-45G does not contain edit A, it must be patched. When
installing edit A (using 20-RSX20F-31), do NOT install MONITOR edit
2906 which is included in 20-RSX20F-31. Use this edit instead.
PCO Log Report
[EDIT]
@
@; EDIT 3176 - FIXES XON/XOFF RACES
@
@; THIS EDIT CHANGES THE PROTOCOL FOR HANDLING XON/XOFF
@; IT MUST BE USED WITH VERSION 15-06 OF RSX20F OR GREATER
@; IT MAY ALSO BE USED WITH VERSION 14-45 IF EDIT A IS APPLIED
@; NOTE THAT VERSION 14-45G WAS NOT RELEASED WITH EDIT A. IT
@; MUST BE PATCHED.
@
$ENABLE (CAPABILITIES)
$GET SYSTEM:MONITR.EXE
$START (PROGRAM) 140
DDT
TTXON1+2/ MOVEI T1,21 JRST FFF
FFF/ 0 MOVEI CX,100000
FFF+1/ 0 TDNN CX,0(T2)
FFF+2/ 0 RET
FFF+3/ 0 ANDCAM CX,0(T2)
FFF+4/ 0 MOVEI A,.DFXON
FFF+5/ 0 JRST TTXON1+3
FFF+6/ 0 FFF:
TTCHI3+1/ HRRZ T2,T1(T2) JRST FFF
FFF/ 0 MOVEI CX,100000
FFF+1/ 0 TDNN CX,0(T2)
FFF+2/ 0 RET
FFF+3/ 0 ANDCAM CX,0(T2)
FFF+4/ 0 HRRZ T2,1(T2)
FFF+5/ 0 JRST TTCHI3+2
FFF+6/ 0 FFF:
FFF/ 0 TTXONF: MOVE CX,0(T2)
TTXONF+1/ 0 TLNN CX,4
TTXONF+2/ 0 JRST TTXONA
TTXONF+3/ 0 MOVEI CX,100000
TTXONF+4/ 0 IORM CX,0(T2)
TTXONF+5/ 0 JRST TTXONA
TTXONF+6/ 0 FFF:
TTCBF7+1/ CALL TTXONA CALL TTXONF
TTYDE4+30/ CALL TTXONA CALL TTXONF
.STPAR+25/ CALL TTXONA CALL TTXONF
^Z
$SAVE SYSTEM:MONITR
<SYSTEM>MONITR.EXE.2 SAVED
$