test-drb July 2004

test-drb@ccmp.vtda.org

259 participants
518 discussions

Commodore MPS-801 printer (Cambridge again :)

by julesrichardsonuk＠yahoo.co.uk

I didn't pick this one up yesterday as I didn't know what chance I stood of being able to find a home for it. However, I'll be going back to the site next week I think to rescue some of the software that was there, and chances are good the printer will still be there. If someone wants it and can pick it up from me I'll make sure I grab it. cheers, Jules

21 years, 2 months

SWTPC board

by julesrichardsonuk＠yahoo.co.uk

I'm starting to make progress in going through the carload of stuff I rescued earlier. For starters: One of the things I found in the heap was a SWTPC CPU board. I know nothing about them, but it looked interesting enough to be worth saving >from an unknown fate. However, the board's different to the one at: http://www.computercloset.org/SWTPC6800.htm This one has 5 larger IC sockets along the top edge, the leftmost of which is populated. there are two 7805 regulators toward the centre of the board at the bottom. Bus is 50 pins, just like the card in the above photo - SW-50 I guess. There was no sign of a case for the board, backplane, or any other cards though. Anyone know what the different board variations are? This one says "MP-A2" in the top right corner along with a copyright symbol. Build date looks to be mid-to-late 1977. On the back, written in pencil, is "MRC original board" (which probably doesn't mean anything to anyone!) cheers Jules

21 years, 2 months

Speaking of Amigas...

by nerdware＠ctgonline.org

I was just given an A1000 with keyboard, mouse, and the external floppy (the external floppy seems to have "issues". This is my second A1000, but the first one is dead and was used for my public displays to show the signatures on the inside of the case. I haven't had time to plug it in and see if it boots, but I do know I'll be needing a Kickstart disk. I have the version of Workbench that came with my A500 (1.2, I think?) -- will that boot the 1000? Nice little bonus -- it also came with the genlock slab, so I'll eventually try to play with that. Also, anyone have a copy of the bouncing ball demo I can have? I've never had that, and always wanted a copy, especially since I interviewed RJ Mical several years back and talked to him about it (he's the one who wrote it.) While I'm in the process of purging most of my collection (those of you who have emailed me -- I haven't forgotten you. Life just got nutty for a while and I got behind on a lot of projects.) I'm keeping my 128K Mac and all my Amigas (2 - 500's, A1000, and an A2000). Thanks. Paul Braun Cygnus Productions nerdware(a)ctgonline.org "Enjoy every sandwich." -- Warren Zevon "At Microsoft, Quality is Job, oh, I dunno, maybe 7 or 8?"

21 years, 2 months

GIGI emulator?

by dickset＠amanda.spole.gov

I'm playing with KLH-10 right now, and would like to run some GIGI-aware apps that are in the tops20:<games> dir. Does anyone have any recommendations for a GIGI-emulator app under Linux? -ethan -- Ethan Dicks, A-130-S Current South Pole Weather at 02-Jul-2004 03:50 Z South Pole Station PSC 468 Box 400 Temp -95.5 F (-70.9 C) Windchill -135.3 F (-93 C) APO AP 96598 Wind 9.1 kts Grid 084 Barometer 672 mb (10929. ft) Ethan.Dicks(a)amanda.spole.gov http://penguincentral.com/penguincentral.html

21 years, 2 months

Datasheet needed, 5204 EPROM

by Watzman＠neo.rr.com

I need a datasheet for a 5204 EPROM (I'll settle for a pinout if no one has a complete data sheet). This is 512 bytes x 8, it's essentially half of a 2708. Now for a big question, does anyone know if it can be programmed in a Cromemco Bytesaver II ??? The Bytesaver II board was for 2708's; the early documentation for the original Bytesaver (not the "II") suggested that the original Bytesaver could program 2704's also (same size as a 5204), but never went into a discussion of how to do it (the sockets assume 1k 2708's), and those references are dropped from the Bytesaver II manual. Thanks.

21 years, 2 months

HP I/O Extender available

by jwest＠classiccmp.org

HP 12979B I/O extender - If anyone wants one let me know. Jay

21 years, 2 months

HP analyzer probes

by sloboyko＠yahoo.com

philpem(a)dsl.pipex.com stated: >Drat. Apparently the cabling for the data lines is >nichrome. Whether >that's >for mechanical, reliability or electrical reasons I >have no idea. >Later. The only reason I can think of for nichrome is that there would be a uniform resistance in the wire (likely) or (unlikely) nichrome is a poor (for a metal) conductor of heat. My Tek 1230 is definitely plain old IDC, and that model is worth up to and including nothing without the probes. Probes are $400+ (without the grabbers!). I have 3 and have turned down an offer for $300 for one of them. I spoke with a surplus test equipment supplier and he told me that these are almost always lost when they go up for auction, especially military. Off lease, they just bill the customer and dump them surplus anyway. I actually looked into building a probe - no schematics, no info from TEK, custom and proprietary IC's, and I suspect absolute analog comparator voodoo designed for clean and fast risetimes. Bottom line: you need to get your dough back. Accept no less. ===== -Steve Loboyko Incredible wisdom actually found in a commerical fortune cookie: "When small men cast long shadows, then it is very late in the day." Website: http://juliepalooza.8m.com/sl __________________________________ Do you Yahoo!? Yahoo! Mail Address AutoComplete - You start. We finish. http://promotions.yahoo.com/new_mail

21 years, 2 months

SANG A2000 prototype card

by julesrichardsonuk＠yahoo.co.uk

Next oddball find: A board (about the size of a full-length ISA card) labelled as: "A2000 Prototype Card V1.1", "Interface Megavision / Megalink", "c+p 1988 by SANG Computersysteme GmbH" Bus is 100 pins (50 each side of the board). There's a handful of buffer and PAL chips right by the bus connector, but otherwise it's a blank prototype card. There's a ten pin IDC board-mounted socket in the bottom-right corner. Any ideas what / where / why / when? :-) cheers, Jules

21 years, 2 months

Datasheet needed, 5204 EPROM

by dwight.elvey＠amd.com

>From: "Barry Watzman" <Watzman(a)neo.rr.com> > >I need a datasheet for a 5204 EPROM (I'll settle for a pinout if no one has >a complete data sheet). > >This is 512 bytes x 8, it's essentially half of a 2708. > >Now for a big question, does anyone know if it can be programmed in a >Cromemco Bytesaver II ??? The Bytesaver II board was for 2708's; the early >documentation for the original Bytesaver (not the "II") suggested that the >original Bytesaver could program 2704's also (same size as a 5204), but >never went into a discussion of how to do it (the sockets assume 1k 2708's), >and those references are dropped from the Bytesaver II manual. > >Thanks. Hi I'm not at all sure about programming the 5204 or if it even is pin compatible with the 2708. The 2704 is program and pin compatible with the 2708. You just program 1/2 the address space. The algorithm is the same for both the 2708 and the 2704, otherwise. Dwight

21 years, 2 months

vaxstation 3100 memory?

by brad＠heeltoe.com

vaxstation newbie question: How hard is it to find vaxstation 3100 memory? I'm finding the 4mb on-board memory is a little, eh - small - for my needs. Seems like there are 4 "tower headers" on the motherboard which will allow me to add some more... Is that memory hard to find? Anyone have any lying around? -brad

21 years, 2 months

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test-drb July 2004