- cctalk - classiccmp.org

by Evan Koblentz

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 Jersey. 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 robotics" collection. Interested buyers should send me a private message to evan(a)snarc.net.

2 years, 11 months

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IBM 8" disk drives - anyone need?

by Steve Lewis

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. -Steve

2 years, 11 months

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ICL / Digico

by Christian Corti

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 :-) Christian

2 years, 11 months

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IMSAI SIO 8080 Comm Program?

by Bill Degnan

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 connector 1. My system is using the original 8080, I want to avoid the cp/m z80 route. Bill

2 years, 11 months

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xerox viewboard

by r.stricklin

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. ok bear.

2 years, 11 months

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Can't access

by Murray McCullough

Dear sir; I can't access your site. Not sure why! It mat be due to the email address I employ. Many thanks, Murray 🙂

2 years, 11 months

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Re: Death of Mitnick

by John Foust

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> >wrote: >> Too bad, but on the other hand, John Draper turned 80 this year. >> Probably a better role model. >> >> --Chuck > >Oh, god, no. Chuck's only saying that because he wasn't invited to "work out." - John

2 years, 11 months

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Death of Mitnick

by Murray McCullough

Maybe this note is off topic but I don't think so: The death of Kevin Mitnick. His book "Ghost in the Wire" is a classic. Too bad he was a criminal! Murray 🙂

2 years, 11 months

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VT100: Datasheet for Intel 8228

by Rob Jarratt

Hello, 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. Thanks Rob

2 years, 11 months

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VCF and System Source Computer Museum swap meet this weekend

by Mark G Thomas

Hi, I am curious if anyone here might be planning on attending. https://museum.syssrc.com/artifact/events/3000/ The Vintage Computer Federation and the System Source Computer Museum are hosting a vintage computer repair workshop on Saturday July 22nd and Sunday July 23rd 2023 ... Mark -- Mark G. Thomas <Mark(a)Misty.com>, KC3DRE

2 years, 11 months

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