So, I've been making wooden racks to hold a lot of my DEC boards, and I've
finally come up with a nice design for one, which holds quad boards:
which holds them vertically.
It's much better than the dual rack next to it, which holds them
horizontally, which has the issue that the distance between the sides needs
to be absolutely perfect, otherwise the boards tend to drop out of their
slots. With the boards held vertically, it's much less sensitive.
If anyone's interested in building one, I can whip up a drawing. (Note that
the slots are offset slightly to the left because one needs different
clearances for the solder and component sides.)
The one shown uses 3 pieces of 1"x8"x6' (not sure what that translates to in
that new-fangled French stuff :-). It would be tricky to make without a
radial-arm saw, though - although I suppose a router with a small bit could
be used, albeit tedious.
I was working 1976 as a volunteer at a research center near Vienna in
Austria writing FORTRAN programs on a PDP8a. We also have a PDP8/e there.
Now I am collecting DEC stuff.
Happy new year !!!!!!!!!!!!
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Gesendet: Sonntag, 31. Dezember 2017 19:00
An: cctalk at classiccmp.org
Betreff: cctalk Digest, Vol 39, Issue 30
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I've been experimenting with the SIMH VAX simulators a lot lately. The only way I know of to mount a tape, disk pack, CD-ROM, etc. after boot time is to halt the simulation with ^e to get to the SIMH command prompt, ATTACH the desired image, and then resume the simulation with CONTINUE.
Is there any way to attach/detach media images in SIMH without halting the simulation? I've tried putting the system console on a telnet port so it doesn't occupy SIMH's controlling terminal, and I found that it's still necessary to halt the simulation to get back to the SIMH command prompt.
Mark J. Blair, NF6X <nf6x at nf6x.net>
Are any of you aware of an MTS mailing list that lives outside of the
execrable Yahoo groups environment? And if not, is there any interest in
Meanwhile, if there are any MTS hacks on the list, I have a question:
When running *SAV or *SVW, what are the labels the system is expecting for the
FSnnnn tapes? I tried the obvious - FS2001 for the FS2001 tape prompted
for - but no luck there. Then again, maybe I'm not labeling the tapes
This is under Hercules.
hetinit -d fs2001.aws FS2001 MTS
doesn't cut it. I also tried running *lbh against that tape (to give it the
same label), but no luck there, either.
The MTS operator's guide doesn't have anything to say about daily/weekly
backups, other than the cryptic notes on the *SAV and *SVW files, and I can't
find anything else as I dig through the rest of the online system docs.
A friend, probably in Ohio, tells me his father has 3 boxes (about 150
of manuals for VAX/VMS and IBM 360 from the mid 1980s.
If anyone's interested in following up, email me and I'll send you the
thanks, and Happy New Year!
I'm actively working on show planning for VCF PNW and I'm noticing that we
have a few international travelers planning to attend and exhibit their
machines/projects. I'd like to put together a FAQ for the logistics of
traveling with vintage equipment across the US border. If you have ideas
please let me know.
For example: Should I plan on providing letters in advance stating that a
person is a registered exhibitor at our show, including details like the
show location, dates, times, and contact information in case there is a
question about why somebody is carrying strange looking equipment into the
US? Is there any sort of paperwork or customs form needed even if nothing
is being sold or left in the US? Any other gotchas to look for?
> From: Paul Koning
> RSTS-11 V4, which had a major reliability problem ... As part of trying
> to keep the customer placated, DEC supplied full OS sources, 5
> dectapes. ... We printed them ... I still have copies of those files.
Is that version available online? If not, maybe an OCR project?
(Although I know other versions of RSTS-11 are available, so maybe it's not
rare enough to make the tedium of OCR worth it. That has been used on a
number of systems; notably CTSS, but also the IMP code and the Apollo
Guidance Computer, that I know of. I'm currently looking into getting an
early version of MERT, and that may also come down to OCR - if we're lucky!)
> Stranger still is the "fancy" lights in RSTS ... "Fancy" because it
> produces a rotating pattern not just in the data lights which is easy,
> but also in the address lights. It runs in supervisor mode
Ah; it must busy loop at loops spread across the address space? Clever!
(Perhaps using the mapping hardware so that it doesn't use too much _actual_
memory.) Is the source available?
??????????????? I?m looking for some x86 source code for what I?ll call a standalone version of an X/Y/ZModem (or any combination thereof) for use with a non-IBM/PC x86 machine. Many versions exist on Simtel and other archives but they are executable programs rather than source.
??????????????? The reason for the odd request is that the system that it will be used on is a Seattle Gazelle replica I built based on the one in the VCFE inventory, and the constraints are hardware/OS imposed. None of the I/O ports are at PC-compatible addresses and it has no INT-callable system BIOS. The system does run both MS-DOS 1.25 and 2.0 but the standard character I/O devices other than CON: (LPT and AUX) are mapped to parallel ports on one of the boards. COM1 and COM2 devices don?t exist.
??????????????? Ideally it should just take two command line parameters ? the file name and whether it?s a transmit/upload or receive/download transaction. I know that the protocol is fairly simple but I was looking to adapt something rather than starting from scratch. I found an implementation of XMODEM in Microsoft BASIC, but it relies on opening the COM1 device to work. I am looking into writing direct hardware access using PEEK/POKE, but I?m not there on it yet.
??????????????? If anyone has something usable in their archives, please let me know. Thanks, and Happy New Year to all!
I was perusing my old computer magazine collection the other day and
came across an article entitled: ?Fast-Growing new hobby, Real
Computers you assemble yourself?, Dec. 1976. It was about MITS,
Sphere, IMSAI and SWT. 4K memory was $500. Yikes! Even more here in
Canada. Now this is true Classic Computing. Have a Happy New Year
everyone. May the computing gods shine down on us all in 2018.
Happy computing. Murray :)