Over the weekend I picked up a Pro/350 from the System Source swap. The
good news is I traded something of similar size for it, and more
importantly I didn't bring anything else home :-)
Anyway, it's a pretty basic system with 10mb ST412 drive, 128k memory on
board, 256kb memory expansion, disk controller, floppy controller and
RX50 (with the usual loose pad, glued back in), and a video card WITHOUT
the extended bitmap option.
Brought it home, pulled everything, checked the power supply (good), got
the drive spinning, and since drives like this tend to be precious I
sucked the data off it using a Gesswin emulator (best money I have
spent). Sucked the data off with no errors, thus everything is preserved
for eternity. I'll take a look at the drive and see about using a bit of
watch oil on the shaft to lubricate the bearings and put this disk back
into a "usable" category.
Even better: Fired up and compiled xhomer on my Raspberry Pi CM3+,
loaded the image, and sure enough: There is a POS 2.0 install on the
disk, with a really neat app called "Prostar/300"
Seems to be an office tool for real estate office, specifically farm
management, investment, and amortization. Even better it looks like all
the data was stored on Floppies (now long gone) so no PII issues. And
there is a word processor built into the app along with the normal PROSE
I'll tool around with it for a bit, then put the disk image up on
crystel.com. An interesting application, can be easily transferred to a
real disk using a gesswin emulator or put it on xhomer. :-)
Pretty nice application from 1986 vintage, I can see this being used in
offices around the midwest.
Around the middle of the 1980s, Lego made a robotics system for 8-bit
computers, including the Apple II, BBC Micro, Commodore 64, and IBM PC.
The system includes a hardware interface (set #9750, "Interface A"), a
card or cable (differs for each computer; the PC-ISA card is set #9771),
and various electronic Lego bits (sensors, lights, motors, etc., the
main set of which is #9700.)
I recently acquired several of the PC-ISA version. I am selling these as
a bundle: 1x-9750, 1x-9771, 2x-9700. The price is $400 + s/h from New
Full details about the sets are on my website, www.brickhacks.com. The
site isn't finished and some links will not work, but the meat of it is
all there. I'll also be posting how-to videos on YouTube
(@TechnicallyEvan) but I can't promise when that will happen -- I'm very
busy in real life.
All of the manuals are on the Internet Archive, under the "vintage Lego
Interested buyers should send me a private message to evan(a)snarc.net.
I have a pair of IBM 8" disk drives - they are from an 1980 IBM 5120
I simply won't have the time to give them the attention they deserve for
many years. They seem mechanically ok (they spin) but I don't know much
more about them, or how "universal" they might be as 8" floppy disk drives.
I think I do have to cut them from the transformer they are connected to
(couple thick red wires), but otherwise they have all the original power
harness stuff as well.
Thinking just cost of shipping plus rounded to nearest $10 or $100. They
are about 20lbs (together, and I would like to keep them together - there
is a pin/clip that is used to latch them together, but I do think they can
be separated fairly easily).
Message me if any interest. If you do need/want them for another 5120
project, I can probably include some adapter cards.
So, I was trying to contact "Pete" at vintage-icl-computers.com several
times during the last years. Obiously, the site and/or the person is dead,
no reaction whatever.
I'm hoping that someone on this list might be able to help me:
I still have a Digico Micro 16V computer that, one day, I'd like to
restore. On the ICL site above I can see that they have (had?) the service
manual/schematics for the system, and I would really love to get a scan
(or at least high resolution photos) of these. Does anyone here maybe have
them or can provide me with some pointers? Oh BTW, software (e.g.
papertape images) would be great, too :-)
I am looking for a basic or commercial IMSAI SIO 8080 Comm Program that
uses SIO serial connector 2 for modem communications. Something I can
start from a ROM monitor running from the console running through serial
My system is using the original 8080, I want to avoid the cp/m z80 route.
Looking for information on how to set the jumpers/dip switches on the Xerox ViewBoard (AWPI Bounty) and ViewBoard II.
Apparently there’s one or more hardware installation manuals for these boards, which were also sold as part of the “Network Services for PC” product, so the hardware installation manual for that would presumably also contain this information. Bitsavers has the Network Services for PC software installation manual, which mentions the separate hardware manual(s), but I haven’t yet been able to locate any copies of anything that describes the jumpers/switches.
At 02:05 AM 7/20/2023, Sellam Abraham via cctalk wrote:
>On Wed, Jul 19, 2023, 8:35 PM Chuck Guzis via cctalk <cctalk(a)classiccmp.org>
>> Too bad, but on the other hand, John Draper turned 80 this year.
>> Probably a better role model.
>Oh, god, no.
Chuck's only saying that because he wasn't invited to "work out."
I have a non-functioning VT100. I think I may have isolated the problem to
an Intel 8228 chip (or 88228, the schematic says 8228, the part is marked
88228C). Certainly, the part gets a bit hot and it doesn't seem to be
outputting anything on the I/O W pin (pin 27) despite activity on STSTB (pin
1), DBIN (pin 4) and WR (Pin 3). There is no activity on the HLDA input
though, but I am not sure if that is required because I think the firmware
is just trying to send its status to the keyboard LEDs.
I can find a brief datasheet for the 8228 but it doesn't tell me the logic
for producing the I/O W signal, so I am not sure if it is behaving as it
should. Does anyone have more comprehensive information on how the 8228 is
supposed to work?
I have dumped the ROMs and been able to capture the ROM reads and they match
the disassembled code, so I think the 8080 CPU itself is working.