Thread View: vmsnet.pdp-11
2 messages
2 total messages
Started by Samuel Scott Patterson
Sat, 09 Jan 1993 07:21
Mysterious Messages...
Author: Samuel Scott Patterson
Date: Sat, 09 Jan 1993 07:21
Date: Sat, 09 Jan 1993 07:21
46 lines
2833 bytes
2833 bytes
Hi,
Well, thanks to the help of people in this newsgroup, I got my
serial port configured properly so I could hook a terminal up to my
PDP-11/34a... However, there seems to be something trapped inside
a boot ROM and I am wondering what it is... WhenI connect a terminal
to my PDP and turn the computer on, the RUN lamp comes on and I get,
170000 170002 170000 170010
@
pressing any two keys makes it display
000000 173200 165212 165212
@
And any time I press two keys after that, I get the same line. Is this
some sort of debugger or what? The @ appears to be some sort of prompt
for something but I don't know what. I got the machine 3rd or 4th hand.
There are 4 PROMs on the Bootstrp board. One apparently is a terminal
emulator and the others are mysterious non-factory PROMs. When I got the
machine, it came with a 2-drive SMD controller, Console Card, Terminal Card,
Bootstrap Card, Processor Cards, and two mystery cards. The first one has
2 50-Pin connectors on the top of it and is labeled, "ASSY NO 1409683 \n
MASTER BUS I/F \n SCHEMATIC - 1409685" The board is very organized and
spaced out. Everything is socketed and in rows/columns. The Board is
labeled by chip row from the bottom up, "A B C D E F" and across,
"1 2 3 4 5 6 7 8 9 10 11" If anyone could give me even the slightest
clue what this board does, I would really appreciate it.
The second mystery board is not as mysterious, it is labeled,
"MENU/TABLET INTERFACE \n ASSY NO 1409716 \n SCHEMATIC 140" It appears
to be made by the same company. It is also very organized and laid out
with the lettering "A-E" up the rows and "1 - 16" across the columns.
The DIP banks have little labels beside them indicating BAUD rates
for the MENU and or TABLET, ADDRs, and VECT. (Why can't all boards have
this) On the top of the board is a 19 PIN connector. Are there
any practical uses for this board? What used to be hooked up to it?
I noticed that it has 2 RCA CDP1854CD 910 chips on it which I seem
to remember being processors of some sort. Anyways, if anyone could
give me any ideas what either of these boards are good for, I would
really appreciate it. Thanks in advance.
-Scott
Oh!! I nearly forgot! Does anyone out there happen to have
manuals for the ACD/01 DISK CONTROLLER? It's a 2 drive SMD controller.
If you have one or know someone that does, I would be willing to pay
a reasonable amount for it.
Re: Mysterious Messages...
Author: Terry Kennedy, Operations Mgr.
Date: Sat, 09 Jan 1993 10:58
Date: Sat, 09 Jan 1993 10:58
24 lines
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1589 bytes
In article <1993Jan9.072106.17306@netcom.com>, sspatter@netcom.com (Samuel Scott Patterson) writes: > However, there seems to be something trapped inside > a boot ROM and I am wondering what it is... WhenI connect a terminal > to my PDP and turn the computer on, the RUN lamp comes on and I get, > 170000 170002 170000 170010 > @ That's the console emulator PROM (23-616F1 if I recall correctly). It is an interesting attempt at a console program in 512 words. You have to type uppercase commands to it [I recall looking at it to see if this could be fixed - *every* byte is used and the code is already quite tight, so I gave up]. You boot devices by typing the device mnemonic (DB, DM, DL, MT, MM, etc.). If you don't have a ROM for it you get an error. Your ROMs should have numbers like 755A9 on them. If they don't, examine locations 173000, 173200, 173400, 173600 and tell me what the first word is and I'll look 'em up. On the other hand, you could just convert the octal to ASCII and it's the device mnemonic. Terry Kennedy Operations Manager, Academic Computing terry@spcvxa.bitnet St. Peter's College, Jersey City, NJ USA terry@spcvxa.spc.edu +1 201 915 9381
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