After months of procrastination and work, my new website has gone live at:
It is a nearly complete makeover. The home page also has a link to what
my site used to look like.
(Context: The website used to be at
webpages.charter.net/thecomptuercollection . However Charter/Spectrum
dropped support of subscriber home pages, so I had to move it to a
hosting service, which I did last year - pretty much intact as it had
That then opened up the opportunity for the website to have a lot more
images and capabilities - the new website is the result.
I have one of these, it has 2 jumper blocks, JPR2 (4 3 pin jumper
'settings'... looks to probably latch each of the 4 high or low) and
JPR3 (12 on/off jumper positions).
It also has a JPR1 which would be a 3 pin header and it is strapped by
wire to position 1-2.
Would love to figure out how the IO port and IRQs are configured. Card
has no BIOS, so unlike a WD1002A-FOX there won't likely be any jumpers
to set drive type. (I'm not having much luck with that card in a Tandy
2500 SX... but that's a completely different issue).
Hopefully someone has or knows where there are some docs on the jumper
I'd imagine I could figure out some by probing which ISA pins various
jumpers connect to..... but any jumper settings that control chips for
decoding logic will be far more difficult to determine.
Domain has been down for 7 days now. No reply to emails. Does anyone know
From: William Sudbrink [mailto:wh.sudbrink at verizon.net]
Sent: Monday, November 04, 2019 12:29 PM
To: 'General Discussion: On-Topic and Off-Topic Posts'
Subject: swtpc.com expired???
Anybody know if Mike Holley is OK?
This email has been checked for viruses by Avast antivirus software.
I'm encountering some strange and severe failures on our 4/260 and
therefore I'm looking for a dump/tape image of the Sun-4 Diagnostic
Executive. The manuals are online but not the tape, so I hope someone has
made a dump.
I have had a major health incident which means that I have been unresponsive
for several months. As I need to move in closer to town, I will be disposing
of what remains of my collection (Things like: Altairs, Imsa, PET 2001,
Apple II, TRS-80s, lots of S100 carts etc.)
I have posted some preliminary information at:
This will be updated on a regular basis.
If you are interested in what happened to me, I have posted
some details at:
The Computer History Museum's IBM 1620 Jr. project team has several
announcements about Cadetwriter:
1)? Congratulations to Paul Williamson as the first person, besides our
project team, to successfully build his own Cadetwriter.? We know that a
number of people are building or planning to build one, but Paul is the
first person we've heard from that has completed it.
??? If you are building, or planning to build, a Cadetwriter, please
let us know about it.
??? Paul's WheelWriter 1000 seems to have a different version of the
logic board and/or its firmware than the CHM WheelWriters. This exposed
several issues that Paul diagnosed which led to changes in the
Cadetwriter firmware that make it more robust.
2)? A new version (5R5) of the firmware is available with these
??? -? Added support for semi-automatic paper loading.
??? -? Increased the Interrupt Service Routine delay time to deal with
overlapping column scans.
??? -? Adjusted the timing of unshifted, shifted, and code characters.
??? This firmware is available at: https://github.com/IBM-1620/Cadetwriter
3)? There is a new Cadetwriter message board at:
??? There are actually 5 channels available:
??? -? Cadetwriter/announcements - for announcements of new versions of
the firmware, documentation, hardware, etc.
??? -? Cadetwriter/description - for a general description of
Cadetwriter and links to resources.
??? -? Cadetwriter/building - a discussion forum for those building a
??? -? Cadetwriter/operating - a discussion forum for those using a
??? -? Cadetwriter/suggestions - a discussion forum for proposed
additions/changes to Cadetwriter.
??? If you have interest in Cadetwriter, please register and
participate in the discussion.
IBM 1620 Jr. Team
I suspect a number of members are like me - when there's salvage or rescue
stuff on the radar you grab first and ask question later otherwise tomorrow
it might not be there.
I quite like those picker shows and subscribe to their philosophy "buy (or
grab) it when you see it". I'm still ruing the day I let a TRS-80 Model II
with a full set of floppy drives go by procrastinating as I haven't seen one
Anyway a little while ago someone I know was quitting their business and
gave me all their office salvage - laptops, PC's, printers, KVMs, routers,
monitors etc etc. As before I did not ask any questions and did not look the
gift horse in the mouth.
The other day I needed a CD drive for a little project and went through the
stuff , found something promising and opened it up. Anyway they'd been
doing all their "business" in there (number ones and twos amongst many other
things I suspect) and the machine was a write off. I suspect finds by other
list members have been even more "interesting"
I've been playing with SpaceWar for my PDP8 Omnibus machines. Since I don'thave the EAE option I've made the LAB8 / AX08 version work on the VC8E.
So now you can run Evan Suits SpaceWar version on an Omnibus machine
and you don't need an EAE.? https://github.com/Roland-Huisman/SpaceWar
And for those who might not have the VC8E graphics boards I've designed74xx clone boards. These are my VC8E (M869 / M855) clone boards:
And this is the DK8E RTC clone (M882) which I'm using.
There are a few more board clones on my GitHub like the RX8E (M8357) for the RX01/RX02
or TA8E (M8331) for the TU60 if anyone would be interested. With the gerber files andpart lists you should be able to make your own boards. They are all 74xx clones sono hard to find DEC chips on it...
I'm not very active on cctech and I guess some people on cctech are maybe not active on vcfed.So I thought it is nice to mention it here too...
Dave, sorry to hear about your situation.
Regarding system/parts/etc. selling prices, I use something called
TeraPeak. It is available on a subscription basis with the downside that
it is now part of Ebay... I quit them in 2015 with no current plans of
ever having anything to do with them, but is still the best way I've
found to get pricing on what sells and how much. It normally has the
actual selling price as opposed to the "asking" price on the main
listing. Because the prices on TeraPeak are the actual selling prices
inflated by the eBay fees and "free" shipping, I generally reduce them
by around 20% - 30% to get realistic pricing (rare items excepted.)
Another what appears to be similar service is Worthpoint. Although I've
looked at it, I have never actually used it.
Like you, I had plans of starting a museum and thus have stuff that I
haven't been able to find pricing information using either TeraPeak or
Google. That would include rare terminals (i.e. Hazeltone, ), some
computers (Philips word processors, Wang, etc.), documentation (IBM,
Burroughs, a variety of printers, etc.) and a lot of other "stuff"
(including some of the stuff you have listed.) How many people have
heard of DMA Systems?
Since I live in Santa Barbara where a number of computer, software,
peripheral were made, I decided to keep anything made in the Santa
Barbara and still have plans for a museum dedicated to what was made
here. That is something you might find possible in your area.
Another thing I'm "collecting" is anecdotes about computer collecting in
the Santa Barbara area. Two examples are where how the name Pickles and
Trout came about, and Lobo drives being named after Roger Billings
(formerly Production manager at Polymorphic) pet wolf, etc.
You might also consider writing a book documenting some of the knowledge
you acquired about computers, etc.
In any case, it sounds like you are well on your way to recovery. So my
best to you and your family during this recovery period!
> Thanks to everyone for the kind words on my situation.
> Had lots of correspondence from various people interested in
> certain systems, but no offers, and very little information on
> what people think they are worth. Many of these systems are
> very old, very rare and nearly impossible to acquire. As I am no
> longer working I want to maximize what I receive from them.
> I will be researching this over the next year and will add prices
> if/when I work them out. If price is unknown I will take the highest
> reasonable offer, so I cannot offer systems now without an idea
> of what they are worth to you.