Ran into this at the electronics-surplus store just down the way from
my workplace and grabbed it on the cheap. I don't actually know what
it *is,* but the labels on the switches make it look a *hell* of a lot
like a 16-bit general-purpose computer of some kind. Despite the
claims of being "microprocessor-controlled," I looked at every board
inside the thing and couldn't spot anything that looked like a 16-bit
or even 8-bit CPU. Genuinely curious what this is, but I can't find
much on it online - the name pops up in a few archived documents, but
Bitsavers doesn't have anything for the company. Though the design is
attributed to Stanley Kubota and Edward Corby - looks like Mr. Kubota
still has an online presence at https://www.exsellsales.com/about-us/
so I'll have to drop them a line...
Anybody heard of or encountered one of these before?
So many VCFs happening in the US but we have them in Europe too!
VCF Berlin is not even two months away (Oct 12th and 13th) and
you can still register as an exhibitor till Sept 8th.
Our special topic this year will be Computer from Germany.
The show will be located at the Technikmuseum (do I need to translate
that?) which is itself worth a visit.
So please attend, as exhibitor or visitor, admission is free!
For more information and a list of exhibitions see
Hope to see you there,
Say, can anyone tell me which version of the kernel was the last one to
work with Decnet?
Does anyone know what the actual issues are? My friend who does kernel
stuff wants to know.
Yoyodyne Propulsion Systems: "The Future Begins Tomorrow"
Visit us at: http://www.yoyodyne-propulsion.net
"When a true genius appears in the world, you may know him by this sign,
that the dunces are all in confederacy against him." -- Jonathan Swift
Beautiful front panel (1970s design).
It would make a nice front panel for a DIY Computer.
It is an RS-423 control/switch panel.
RS-423 is an EIA/TIA serial communications standard, BUT there is no common pinout (standard) for RS-423.
RS-232 was defined in 1962 by the Electronics Industry Association (now the Electronics Industry Alliance). Control of the standards definition was passed over to the Telecommunications Industry Association in 1988. Since then, standards documents relating to RS-232 are referenced by the code ?TIA.? The standard is currently known as TIA-232-F.
RS-432 was a faster version of RS-232 ? BUT it was not widely adopted.
The BBC Micro computer used a 5-pin DIN connector. DEC used it with their Modified Modular Jack (MMJ) connector. This was sometimes called "DEC-423".
RS-432 was implemented in Apple Mac computers and the Enterprise 64 and 128 models. All other hardware manufacturers stuck with RS-232.
Midwest VCF : September 14-15, 2019
Sent from iPad Air
I'm just curious how many people have powered up their TRS-80 computers,
and ended up with a bang and a room filled with smoke?
So far, I've gotten the fireworks in two out of two TRS-80s (model 3 and
4) when they were powered up. In both cases, the problem was with the
main line filter capacitor mounted on one of the power supplies. The
computers continued to work which was my first clue the problem was not
Is this a normal problem with these older computers? I'm used to seeing
the electrolytics give problems, but this is the first time I've seen
one of the X type line filter caps blow.
OK...?? it isn't Versatec or Calcomp but it is early HP.?? It's a
DesignJet 755CM.?? HP part number is C3198B.?? It was fully functional and
in weekly used when finally taken out of service but it's been sitting
for 20+ years in inside storage and it needs a new home. I haven't fired
it up as it *will* need new belts (just from sitting) but otherwise it
should be in fairly good mechanical/electronic condition. Lots of tech
data including the complete service manual can be found online.
It needs a new home.
Any interest? Physically/cosmetically it's in good shape although the
paper bin is not original.?? Its mounted on the classic DesignJet stand
for mobility and I have a box of assorted unused/sealed ink cartridges
(beyond that, their status is totally unk though).?? I can probably find
a roll of paper for it as well.
Located in the SF Bay area, it *could* be shipped but I suspect you
don't want go there - even if I boxed it myself.?? If there's a serious
interest, I'd be open to delivering it or meeting part way.?? Obviously,
I can part it out or just e-waste it but those seem like such a shame to do.
I could email some photos off-list if there's anyone interested.
> From: Zane Healy
> What I found really odd was that it had part numbers and manual names
> from one version, but when I clicked on the links it said no known
> version online.
They try and list all known DEC manuals and print sets that ever existed, so
just because something is listed in the index page (and has a subsidiary page
which is linked from there), doesn't mean there's a known copy online.
If you look in the "Status" column on the index page, it will be blank if no
online copy is known, or "Online" if there is a copy (to which they link,
through the subsidiary page).
I have mixed reactions to it. I use it some, often to see if something is
online at all. (If I buy a manual, I usually check, to see if I need to
scan it, and get it to Al. Have a backlog at the moment, sigh.)
The problem is that there are 'false negatives'; i.e. entries where
they say 'none known online', but which are available. E.g.
KE11-A Field Maintenance Print Set
KE11-B Field Maintenance Print Set
Both listed as not online, but they are: the KE11-A is on Bitsavers,
and the KE11-B I also just found (IIRC, on one of the collections they
list as indexed).
So I'd use it as a 'first stop', but don't depend on the negatives to
be accurate - do a Web seach if it pans out.