Miscellaneous problems
Opened this issue · 15 comments
larsbrinkhoff commented
I'm lumping together various problems I have seen trying to run and use WAITS (1974 disk images) and @rcornwell's KA10 emulator.
- RUN MTA0: fails for DART.DMP: "ILLEGAL UUO AT USER 20746"
- RUN DTA1:DART.DMP fails too.
- Input from DCS sometimes stops, see rcornwell/sims#243
- System asks for date and time; does the Petit clock work?
- III display has random pixels at the top.
- How to initialize a new file structure on a DECtape?
- Restoring files with DART fails on the second file. Identified: rcornwell/sims#242
- Building a monitor doesn't work. Fixed: restore COMCSS from tape.
- Idling doesn't work. Analysis: CPU idling needs update, PMP device prevents idling.
larsbrinkhoff commented
Regarding building monitor. I have examined COMCSS around the REQUE symbol, and CLKSER page 1 and 2, but nothing wrong as far as I can see.
.ALIAS J17,SYS
.LOAD @SYS
OUTER
FAIL: STANFO
JOBDAT
ALLDAT
IMPDDB
LOWCOR
DID YOU REMEMBER TO CHANGE CONFIG?
PARSER
SYSINI
COMCSS
CLKSER
#####
CLKSER, PAGE 1, LINE 1
COMMENT VALID 00091
PAGES
APRSER & REQUE+7
TWO ADDRESS FIELDS OR UNDEF OPCODE
TWO ADDRESS FIELDS OR UNDEF OPCODE
REPLY 'E' - EDIT, [CR] - CONTINUE, [LF] - CONTINUE AUTOMATICALLY
larsbrinkhoff commented
Monitor build problem was due to a damaged COMCSS file.
larsbrinkhoff commented
SOS manual:
SOS is capable of using the full 128 character character set through
Teletype keyboards. To do this it uses ? to give each character on
the teletype a second meaning. Thus, typing ?2 on the teletype
causes ↔ to be entered into the file (octal code 027). Similarly a ↔
in the file will type out as ?2 on the teletype. To enter a ? one
must type ??. To enter lower case characters through an
upper-case-only keyboard, precede each letter with a "?", or use the
shift commands (←LOWER and ←UPPER, see Section 4). Below is a list
of the alternate meanings of the various non-alphabetic characters.
{=?[ ?=?? α=?" ∩=?-
}=?] ¬=?% β=?# ∪=?.
≤=?< ~=?4 ε=?& ⊂=?+
≥=?> |=?: λ=?( ⊃=?,
≠=?= _=?9 π=?' ↓=?!
≡=?7 ⊗=?1 ∀=?/ →=?6
∧=?$ ∂=?* ∃=?0 ↔=?2
∨=?8 '=?@ ∞=?)
larsbrinkhoff commented
To get the monitor refresh dialogue, change two IFN 0*FTDISK in ONCE and the COMMENT around REFRESH in DSKSER.
larsbrinkhoff commented
III displays random pixels.
larsbrinkhoff commented
Run MTA0: works for COPY.DMP (size 6.5K), but not DART.DMP (size 16K).
larsbrinkhoff commented
Logs from RUN MTA0: with DART.DMP in 128-word records. My comments are inserted.
;At this point the first 31 words have been read fine.
DBG(373137400)> MTC DETAIL: MTC0 read data 000000037777
DBG(373137400)> DCT DATA: DCT Write 000000037777, 0 124021
DBG(373137424)> DCT DATAIO: DCT 200 DATI 000000037777 0 PC=5
DBG(373137820)> MTC DETAIL: MTC0 read data 000000000000
DBG(373137820)> DCT DATA: DCT Write 000000000000, 0 124021
DBG(373137844)> DCT DATAIO: DCT 200 DATI 000000000000 0 PC=5
DBG(373138240)> MTC DETAIL: MTC0 read data 000000000000
DBG(373138240)> DCT DATA: DCT Write 000000000000, 0 124021
DBG(373138264)> DCT DATAIO: DCT 200 DATI 000000000000 0 PC=5
DBG(373138660)> MTC DETAIL: MTC0 read data 000000000000
DBG(373138660)> DCT DATA: DCT Write 000000000000, 0 124021
DBG(373138684)> DCT DATAIO: DCT 200 DATI 000000000000 0 PC=5
DBG(373139080)> MTC DETAIL: MTC0 read data 000000000000
DBG(373139080)> DCT DATA: DCT Write 000000000000, 0 124021
DBG(373139104)> DCT DATAIO: DCT 200 DATI 000000000000 0 PC=5
DBG(373139500)> MTC DETAIL: MTC0 read data 000000000000
DBG(373139500)> DCT DATA: DCT Write 000000000000, 0 124021
DBG(373139524)> DCT DATAIO: DCT 200 DATI 000000000000 0 PC=5
;So far so good. The first 37 words have been read now.
;This is CONSZ at MTDCN1+1.
DBG(373139537)> DCT CONI: DCT 202 CONI 000000124021 0 PC=107003
;Next word is read off tape, but there's no DATAI to fetch it.
DBG(373139920)> MTC DETAIL: MTC0 read data 266240000200
DBG(373139920)> DCT DATA: DCT Write 266240000200, 0 124021
;Next word, and now we're in trouble. The DCT buffer is full, so we get an EOR error.
DBG(373140340)> MTC DETAIL: MTC0 read data 000000000000
DBG(373140340)> DCT DATA: DCT Write 000000000000, 0 121021
DBG(373140760)> MTC DETAIL: MTC0 read data 000000000000
DBG(373140760)> MTC DETAIL: MTC0 read eor 200 04040004
larsbrinkhoff commented
It seems MTDCN1 (in MTCSER) is called when the BLKI runs out. So maybe only ~40 or so words are read by the BLKI, although that seems a bit small.
larsbrinkhoff commented
Oh EOR is just end of record, isn't it?
larsbrinkhoff commented
Reducing record size to 32, I get this. 37777 is the last word in the record, so EOR is set.
After that, some confusing things are happening. Space forward, why? The next record is read by still EOR?
Is the EOR condition not cleared between records?
DBG(356394556)> DCT DATA: DCT Write 000000037777, 0 124021
DBG(356394556)> MTC DETAIL: MTC0 read eor 160 04040004
DBG(356394565)> MTC CONI: MTC CONI 226 status 000004040006 0 04040004 PC=000635
DBG(356394582)> DCT DATAIO: DCT 200 DATI 000000037777 0 PC=1013
DBG(356394644)> DCT CONI: DCT 202 CONI 000000124021 0 PC=107023
DBG(356394647)> MTC CONI: MTC CONI 226 status 000004040006 0 04040004 PC=107025
DBG(356394660)> DCT CONI: DCT 202 CONI 000000124021 0 PC=107035
DBG(356394670)> DCT CONI: DCT 202 CONI 000000124021 0 PC=107042
DBG(356394689)> DCT CONO: DCT 203 CONO 004021 0 PC=107045 004021
DBG(356394692)> DCT DATAIO: DCT 200 DATI 000000000001 0 PC=107046
DBG(356394712)> DCT CONO: DCT 203 CONO 000000 0 PC=107054 000000
DBG(356394715)> MTC CONI: MTC CONI 226 status 000004040006 0 04040004 PC=107055
DBG(356394750)> MTC CONI: MTC CONI 226 status 000004040006 0 04040004 PC=107200
DBG(356394757)> MTC CONI: MTC CONI 226 status 000004040006 0 04040004 PC=107203
DBG(356394801)> DCT CONO: DCT 203 CONO 000000 0 PC=107115 000000
DBG(356394844)> MTC CONI: MTC CONI 226 status 000004040006 0 04040004 PC=107200
DBG(356394850)> MTC CONI: MTC CONI 226 status 000004040006 0 04040004 PC=107203
DBG(356394904)> MTC CONO: MTC CONO 227 status 000000000001 0 01040004 PC=107323
DBG(356394986)> MTC DETAIL: MTC0 EOR 00000000
DBG(356394995)> MTC CONI: MTC CONI 226 status 000001040007 0 01040004 PC=000635
DBG(356395210)> MTC CONI: MTC CONI 226 status 000001040007 0 01040004 PC=107200
DBG(356395217)> MTC CONI: MTC CONI 226 status 000001040007 0 01040004 PC=107203
DBG(356395252)> MTC CONO: MTC CONO 227 status 000000000000 0 00040004 PC=107142
DBG(356395255)> MTC CONO: MTC CONO 223 start 0 4000000000004 PC=107143
DBG(356395504)> MTC DETAIL: MTC0 Done 00000000 00040004
DBG(356395504)> MTC DETAIL: MTC0 stoping 4 00040004
DBG(356397693)> MTC CONO: MTC CONO 223 start 0 4000000000004 PC=106671
DBG(356397696)> MTC CONO: MTC CONO 227 status 000000000002 0 02040004 PC=106672
DBG(356397699)> MTC CONI: MTC CONI 226 status 000002040007 0 02040004 PC=106673
DBG(356397702)> MTC CONI: MTC CONI 226 status 000002040007 0 02040004 PC=106675
DBG(356397705)> MTC CONI: MTC CONI 226 status 000002040007 0 02040004 PC=106676
DBG(356397708)> MTC CONI: MTC CONI 226 status 000002040007 0 02040004 PC=106700
DBG(356397711)> MTC CONI: MTC CONI 226 status 000002040007 0 02040004 PC=106702
DBG(356397756)> MTC CONI: MTC CONI 226 status 000002040007 0 02040004 PC=106535
DBG(356397864)> MTC CONO: MTC CONO 223 start 0 4000000073004 PC=106576
DBG(356397864)> MTC CONO: MTC CONO 223 starting 0
DBG(356397870)> MTC CONO: MTC CONO 227 status 000000040000 0 10040000 PC=106600
DBG(356397885)> MTC CONI: MTC CONI 226 status 000010040000 0 10040000 PC=000635
DBG(356397968)> MTC CONO: MTC CONO 227 status 000000000001 0 01040000 PC=107323
DBG(356398874)> MTC DETAIL: MTC0 space 6
DBG(356398874)> MTC STR: rd_lntf: st: 0, lnt: 160, pos: 336
DBG(356409844)> MTC DETAIL: MTC0 EOR 00000000
DBG(356409853)> MTC CONI: MTC CONI 226 status 000001040007 0 01040004 PC=000635
DBG(356409929)> MTC CONI: MTC CONI 226 status 000001040007 0 01040004 PC=107133
DBG(356409976)> MTC CONI: MTC CONI 226 status 000001040007 0 01040004 PC=107200
DBG(356409983)> MTC CONI: MTC CONI 226 status 000001040007 0 01040004 PC=107203
DBG(356410016)> MTC CONO: MTC CONO 227 status 000000000000 0 00040004 PC=107142
DBG(356410019)> MTC CONO: MTC CONO 223 start 0 4000000000004 PC=107143
DBG(356410344)> MTC DETAIL: MTC0 Done 00000000 00040004
DBG(356410344)> MTC DETAIL: MTC0 stoping 4 00040004
larsbrinkhoff commented
DART RESTORE problem identified, see rcornwell/sims#242 (comment)
larsbrinkhoff commented
DECtape figured out. SIMH's DTC1 corresponds to WAITS' DTA1:
larsbrinkhoff commented
RUN DTA1:DART.DMP says:
?
257K OF CORE NEEDED
^C
If I copy the file to DSK and RUN it from there, it works.
larsbrinkhoff commented
III random pixels identified. There are stuff going on above the display, and it's clamped to the top line.
Pushing everything down 10 pixels or so, we get this nicer picture.
Note, no "random" pixels at the top, and the text displays without tiny gaps.
larsbrinkhoff commented
But wait, there's more! The III keeps giving. Here's a snapshot of an upcoming vector display emulator of mine. Surprisingly, there's an entire line of text not visible in the SIMH III simulation.
