I have 2 boxes of old Sun memory, 200 pin and 232 pin.
I do not have a way to test these, but they are in good shape.
Any takers out there?
PN include 501-3136,501-4743, 501-2480 for the 200 pin and 501-5401,
501-5030 for the 232 pin.
Cindy Croxton
Electronics Plus
1613 Water Street
Kerrville, TX 78028
(830)792-3400 phone (830)792-3404 fax
AOL IM elcpls
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I have five Zilog Z182 microprocessors left over from the latest run of
P112 boards. If you bought a naked board without anything mounted from me
or Dave Brooks, and you haven't gotten around to getting a microprocessor
I'm offering you one free-for-shipping.
--
David Griffith
dgriffi at cs.csubak.edu
Hi,
Ever since I first saw them at the University where I worked in the late
80's and early 90's, I wished I had one to experiment with myself, but they
have neither gotten cheap nor plentiful over the years. My first computers
ran CP/M, SCO Unix, then SunOS on a SPARC-4/110.
So my 11/53 just arrived, and my 11/73 is on it's way, both in BA23 chassis.
Inventory of the 11/53 is:
KDJ11-D/S CPU
Dataram 4093 with 2MB RAM
RQDX3 controller
The power supply checks good, the cabinet is remarkably clean inside,
and I get the countdown from the console port, then it tries to boot
>from a TEAC drive I had that matched the smashed one that came with the
system. No network card in this one, but the 11/73 will have a Delqa
with it.
I'm pleased there are still so many links that haven't expired to
documentation, and nice web pages and youtube videos by others like
myself who have resurrected these systems.
I wish I hadn't thrown out all my MFM drives, years ago when I moved, since
I don't think I can do much more until the 11/73 with a hard drive shows up,
and that machine will have the Delqa card too.
I have some questions that I have either not been able to answer, or for
which I've found confusing answers.
- What are the rules for cards & slots in a BA23?
- If I wanted to get bsd2.11 running on either of these, do I need an
additional board with some kind of RTC, or some other hardware than I
already have? (I see comments about an MXV11-B, at least for 11/23 users?)
- I can't find a Dataram 4093 manual online. I might never need it, but I'd
like documentation for all the cards in my system.
- Is there some kind of diagnostics I can perhaps use PUTR to copy onto
a bootable floppy, that would do further hardware tests? I'm not even
clear if the ROM power-on memory test is thorough.
I've found useful references from hobyists working with similar hardware:
http://home.windstream.net/engdahl/pdp-11.htmhttp://www.retrocomputingtasmania.com/members/nw-retrocomputingtasmania-com…http://www.youtube.com/watch?v=BGTX13MnRLQ (and the followup videos)
http://lordkalvan.typepad.com/blog/2009/11/nablopomo-dec-micro-pdp-1173.html
Mark
--
Mark G. Thomas (Mark at Misty.com)
Does anyone have any info on this particular system? It looks like I've got
two different generations of CPU cards for it, which I was told would not
be compatible with each other. My digging online has turned up very little
on ACE in general.
The sytem:
http://i.imgur.com/LXMKKwx.jpg
Close-up of cards:
http://i.imgur.com/oEeTscu.jpg
I can snap some better pictures later if needed.
Thanks,
Kyle
W4GNU
Hi,
I'm currently trying to start one of my M40s for the first time since
over 5 years, and it doesn't boot.
I had the 8" floppy drive removed in order to image the floppies on
a PC.
Now I've put it back into the M40.
But it doesn't boot anymore, it just says 3 numbers: "4 5 8".
I assume these are indicators of failed startup tests, but I cannot find
information about what these numbers actually mean.
Does anyone here have some documentation about the M40,
most preferably hardware documentation or a service manual?
Any help would be appreciated.
regards,
chris
I've got a PDP-8A w/32K of core memory that I'm bringing up. For quite a
while I couldn't examine/deposit to anything but field 0 using the
programmers console. Pressing "000X" LXA never changed the field digit.
But by accident I tried doing an LXA with "3333" as the operand and it
started using field 3!. A little experimentation revealed that LXA was
using the tens (eights?) digit to set the address.
Now this PDP-8A is a 620 which means it really has the PDP-8E board set.
From reading the 8E maint manual when a load field is done on that machine
bits 6-8 of the switch register set the instruction field and 9-11 set the
data field. But the 8A user manual says that entering "0003" LXA should
work.
So it would seem that the 8A programmers console or the M8316 module needs
to replicate the lowest digit of the value entered into the tens digit to
work correctly. I can't see where that is done from looking at the
description or schematic.
Can anyone with an 8A programmers console verfiy that just entering "000X"
LXA sets the address to XYYYY (where YYYY was set with the LA button)?
Thanks,
Marc
Hi! Thanks everyone! There are enough pre-orders to warrant a PCB
manufacturing order so I made one today for the S-100 buffered prototyping
board PCBs.
They should be here around 30 Dec 2013 or so. I will keep you posted on
progress. Of course the pre-ordered PCBs will go out first but there should
be plenty left over for any late comers.
Thanks and have a nice day!
Andrew Lynch
I have just collected one of these machines. I don't know a lot about them.
It seems they use a customized version of MS-DOS. Does anyone have a copy?
I have inspected the PSU in the base unit and there are no obviously swollen
capacitors, but it is 30 years old. Not sure if I should try applying power.
Regards
Rob
