Things to try
Opened this issue · 5 comments
Some things I'd like to try. I'll jot some notes here occasionally.
- Rebuild monitor with refresh dialog.
- Test KL10 monitor with pdp10-kl emulator.
- Run Spacewar.
- Refresh disks, run DART off tape and RESTORE system.
- Build KA10 monitor newer than June 1976. Does it still work?
- Test DataMedia support.
- Test RH20 disks.
- See the uptime sailboats on a Data Disc display, introduced 1983.
- Check green/red/yellow lights and DDT bell, introduced 1981.
- Write new program; port Mandelbrot?
Tested the 1976-08-03 "SYSTEM.DMP.72" off Saildart with pdp10-kl. It started off well, but hangs/crashes after entering time.
Stanford 8.01/C 08-01-76
Start other processor at 204, else type any character.
Type today's date as mm-dd-yy
08-01-76
Enter time of day in 24-hour format
0832
Breaking out to SIMH prompt says Simulation stopped, PC: 000000 (LUUO00 0,1)
FYI, @rcornwell & @bgbaumgart
Is seems the crash is in DDT[S,SYS]. We get safely to the CONO KLPAG, but after that it goes off into the weeds according to CPU history.
SETXC:
IFE FTEXPG,< PUSH P,EXPGT+DDTPG >;NO FTEXPG
NOKL10,< PUSH P,170
MOVE TAC,[JRST SETXCT]
MOVEM TAC,170 >;NOKL10
IFKL10,< PUSH P,KLUPT+KLPFNP
MOVEI TAC,SETXCT
MOVEM TAC,KLUPT+KLPFNP ;>IFKL10
MOVE TAC,[160040,,1000] ;PAGE TABLE POINTER TO 1000000
MOVE TAC1,[DDTA,,DDTPG⊗9] ;INITIAL BLT POINTER
HLRE AC2,DDTSYM
MOVN AC2,AC2
ADD AC2,DDTSYM ;ONE PAST LAST SYMBOL
MOVEI AC2,-DDTA+777(AC2) ;SIZE OF DDT+SYMBOLS+777
LDB AC2,[POINT 9,AC2,26] ;NUMBER OF PAGES IN DDT+SYMBOLS
PUSH P,AC2
NOKL10,< CONO PAG,0 ;LOAD MBR
CONO PAG,7 ;TURN ON MAPPING
SETXC2: CONO PAG,1 ;CLEAR ARS MAPPING EXEC PAGES >;NOKL10
IFKL10,< BLKI KLPAG,[EXPGT⊗-9 ↔ -1] ;SET EXPGT AND USPGT POINTERS IN AC BLOCK 6
SETXC2: CONO KLPAG,@KLPCON ;>IFKL10
History:
076604 777602036310 002502 004000060217 777603036311 300000 00 261140002502 PUSH 3,2502
076605 000777000000 077455 004000076647 004000076647 300000 00 200040077455 MOVE 1,77455
076606 004000076647 002502 004000076647 004000076647 300000 00 202040002502 MOVEM 1,2502
076607 004000076647 077462 160040001000 160040001000 300000 00 200040077462 MOVE 1,77462
076610 000001000000 077447 100000261000 100000261000 300000 00 200100077447 MOVE 2,77447
076611 000007072140 000036 000000106357 000000000000 300000 00 574700000036 HLRE 16,36
076612 000000000000 000016 000000000000 000000000000 300000 00 210700000016 MOVN 16,16
076613 000000000000 000036 000000106357 000000106357 300000 00 270700000036 ADD 16,36
076614 000000106357 007356 000000007356 000000007356 300000 00 201716700777 MOVEI 16,700777(16)
076615 000000007356 077461 000000077461 111100000016 300000 00 135700077461 LDB 16,77461
076615 000000007356 000016 000000000016 000000007356 320000 00
076616 777603036311 000016 000000000007 777604036312 300000 00 261140000016 PUSH 3,16
076617 000000000001 077471 000000077471 700100000002 300000 00 701000077471 BLKI PAG,77471
076620 000000000004 060001 000000060001 000000060001 300000 00 701220022577 CONO PAG,@22577
401313 000000000001 001444 000000000000 000000000000 300000 00 336002000444 SKIPN 0,444(2)
Not too sure about that SKIPN. Here's stepping from a breakpoint:
Breakpoint, PC: 076620
sim> s
Step expired, PC: 076621
sim> s
Step expired, PC: 000000 (LUUO00 0,1)
sim>
So it looks like the pager isn't doing the right thing here. Were there special SAIL microcode?
@bgbaumgart, is this the WAITS bell?
I have a program to draw the Mandelbrot set on a Knight TV or 340 display. It would be an interesting exercise to port it over to WAITS and display on DD and/or III.
I was expecting to hack Spacewar due to a rumor that it needs a PDP-6 to run. But on a whim I just loaded SW[SW,REG] and it worked right off the bat.
There's an option to use keyboard controls, but it seems they are not ordinary key presses but actually a spaceware console attached to the keyboard scanner? There are also spacewar buttons, but the emulator doesn't yet support those. I think it will be a nice afternoon hack to add them in the same fashion as MIT's spacewar consoles.