Hi Guys
My DEC Collection needs downsizing.
Im in the UK so for the US only the small stuff would be worth shipping
If you need anything PDP8, PDP11 or VAX please indicate item you
might want
Rod
Hi
First list of boards available
M7504 DEQNA
M9970 DEC M9970 is a dual-height passive transition board
M9047 M9047 is a dual-width Q-bus grant continuity car
M9714 Alternate Power Source
M7941 DPQ11-A synchronous serial line interface
M7555 RQDX3
G7273 bus grant continuity card
M7546 TQK50
M7850 The DEC M7850 is a legacy UNIBUS card
Rod
Hello again,
Yes, this time I am trying to figure out what I'm doing wrong while
creating a C program.
It is still in RSX11M+ on my 11/23+ and PDP-11 C 1.1.
I have a really simple test program like this:
+>type test.c
#include <stdio.h>
main() {
puts("Hello, world!");
}
The following is what I do to compile and task build:
+>type tstbld.cmd
.IFNINS MAC INS $MAC
.IFNINS TKB INS $TKB
PIP TEST.C/PU,TSTBLD.CMD/PU,TSTTKB.CMD/PU
CCC TEST.C
TKB @TSTTKB.CMD
PIP TEST.OBJ;*/DE
PIP TEST.TSK/PU
+>type tsttkb.cmd
TEST/-FP=TEST,LB:[1,1]CFPURSX.OLB/LB
/
UNITS=1
ASG=TI:1
TASK=...TST
LIBR=FCSFSL:RO
/
The code compiles fine and TKB has no issues. I get my test.tsk:
+>dir test.tsk
Directory DU0:[200,2]
2-SEP-2026 21:36
TEST.TSK;2 22. C 02-SEP-2026 21:30
Total of 22./22. blocks in 1. file
I run it as '+>run test' and I just get the prompt back. I expect it to
print to the terminal.
What am I missing? Nothing stands out to me in the manual. I'm sure it's
something stupid.
Any pointers would be greatly appreciated.
- Peter
https://devin.ai/cli
Not exactly the image I'd expect to see on a webpage advertising shiny new technology. It even shows that application running on the VT100 (simulated, but the evidence for that is pretty subtle).
Fun.
paul
Yes, I did early development on both. At least the interface to the OS was Pascal. I still have the early documentation buried in a box somewhere.
Sent from my iPhone
> On Jun 20, 2026, at 2:02 PM, Fred Cisin via cctalk <cctalk(a)classiccmp.org> wrote:
>
> On Sat, 20 Jun 2026, ben via cctalk wrote:
>> PL/1 and C are the only two high level languages a operating system is written in, that I can think of that are well documented, and easily found on the WEB.
>
> I heard that all of the Lisa OS, and much of Macintosh, were written in Pascal. (obviously other than some low-level drivers and performance critical routines?)
> Is that correct?
>
> http://pascal.hansotten.com/apple-lisa-pascal/
>
> When did Macintosh development switch to C?
>
> --
> Grumpy Ol' Fred cisin(a)xenosoft.com
Not my auction etc etc but I believe these are hard to find. Also fits
HP500A and maybe B logic analyser (500C used PS/2).
https://www.ebay.co.uk/itm/297932090059
Hey gang, a few months ago I presented about timeshare and some aspects
about operating systems since the 1950s.
To buzz through a PDF or PPT version of the notes:
https://github.com/voidstar78/VCF2026
VCFSW has the talk archived here:
https://www.youtube.com/watch?v=9hE235ti9XQ
Sorry being a bit dull as a speaker, but a few highlights:
- overview of Douglass Ross "Director Tape" for Whirlwind (only "what it
looked like" evidence that I was ever able to find, would be curious if
others knew more about it)
- 1965 Honeywell ADMIRAL OS: while I couldn't find much info about that
specific OS, what I did find what Honeywell went to bat for us all vs RAND
corp, putting an end some concerns about ENIAC hardware patents (that's a
very short version of it)
- today we fight about \ vs / slashes, when MULTICS split the difference
and used > (greater than symbol), at least as far as I could tell from the
manuals
- some verification that UNIX was (sort of) originally called UNICS (see
footnotes in the PPT notes), never formally written down but "verified" in
the past year
- I made a claim that Datapoint CTOS (1972) was the only OS ever on a
cassette tape (not to be confused with the late 1970s CTOS) - that said, I
suppose the MCM/70 did as well; really admires Mattis Lind's work on the
DP2200
I never found too much info about "tymshare" (apparently a late 1960s kind
of "corporate or business-to-business digital exchange" system, maybe for
inventory or check-processing?).
Tons of other OS's, obviously couldn't cover them all in a VCF talk. But
there are a bunch of addendum notes after the end of the slides:
- Mike Muuss ENIAC archive (at a .mil ftp if anyone wants to archive it
more properly?)
- I still claim that the word "operating system" was never used before
1960; the "SOS" or "share OS" was a name applied later (1962ish) to those
pre-1960s concepts [ afaik ]
- I couldn't fit in a bit about squozed :) really wanted to, just couldn't
make it fit
- AOSP, EXEC II, IBM 1800 derivatives (anyone ever see one of these in
the wild?),
Oh, not officially launched yet, but I'm now self hosting oldsayings.info
(with a telnet front-end at port 42525). Kicking around some ideas, but
it's reliably staying up now with Starlink as the ISP. I got tired of
waiting for fiber - but the county workers are getting closer, I see them
running it ranch by ranch.
Cheers, wish could have made it to VCF West this year.
-Steve
There's an EAI Analog computer listed for auction on HiBid. Even has
some docs:
https://hibid.com/lot/317096364/analogue-computer-mod-185-240-eai180
It's in Australia and it's local pick up but for the right person in the
right place.....
As usual: No knowledge or relationship on my part.
Hello! Our office represents the family of a gentleman (Mr. Marsh) who passed away from mesothelioma, a cancer caused from breathing asbestos. Mr. Marsh spent his career working for a contractor that provided third-party installation and maintenance of DEC computer equipment at various customer locations. We are curious if any DEC equipment ever contained asbestos, possibly asbestos lined brakes, gaskets etc. I am wondering if anyone in this forum has personal knowledge or documentation of asbestos use in DEC equipment OR if any of you have a tape drive with a braking mechanism that we can test for asbestos content? I can be reached via email or on my cell phone (925) 639-8593 with your thoughts. Thank you for your time!
Regards,
Jennifer Manibusan
Legal Investigator
Maune Raichle Hartley French & Mudd, LLC
1900 Powell Street, Suite 200
Emeryville, CA 94608
(925) 639-8593 Cell
(314) 241-2003 Office
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