test-drb January 2017

test-drb@ccmp.vtda.org

198 participants
283 discussions

by vintagecomputer＠bettercomputing.net

I have some C1101A RAMs I was planning to use in my Mark-8 project. I'm having trouble finding more, as previously mentioned because the price has shot up so much. I'm wondering, I'm finding lots of P1101A1 RAMs with the correct date codes.. are those compatible with C1101A/P1101A? I don't understand what the 1 at the end signifies.

7 years, 11 months

PDP-6s at MIT

by jnc＠mercury.lcs.mit.edu

> From: Lars Brinkhoff >> They expressed some interest in the old MIT-AI KA-10 that you have in >> storage. Can they have it? > So maybe they got it after all! So perhaps my memory is not so bad after all! :-) Or maybe I was just remembering the discussion of them possibly getting it? The real thing to do is check directly with those guys, rather than examining tea entrails. Howwever, if my memory is accurate, there perhaps might be, in those pictures: http://www.stupi.se/Bilder/pdp-10/ some evidence that they did get it: in the row above the bottom, the picture on the left seems to me like it might be a picture of the HIC-memory for AI. But now that I look close, maybe it's just a CADR? The picture to the right of that one shows what looks like a CADR (they had those giant swing-out monolithic bays on the front which are the CPU - the AI Lab build a cool robot to check the wirewrap when they went into production on the CADRs), and so that may be the front of the same rack as that one before (which would therefore be of the back of that CADR). Noel

7 years, 11 months

How do you clean your vintage computers?

by r3trohub＠gmail.com

Hey all, So one of my recent acquisitions is looking quite grubby, outside it just looks like surface dirt on the plastic, inside seems dusty/basement dirty. My question comes in two parts: 1. What do you use to clean the exterior plastic and/or metal if applicable? I'm always worried about staining the plastic using strong solvent... could you also include what type of cloth/sponge/anything you use :) 2. You guessed it! What about internally? I've heard isopropyl is really good, but how do you apply it? What do you use to apply it in order to make the board shine as if it was just bought!? :D or if you use anything other than isopropyl... I also have a bonus question, how do you ground yourself to ensure you don't blow a component? Is an ESD wrist strap good enough? I absolutely love this group, really enjoyed your previous answers regarding rarest/unusual machines!! -Andy

7 years, 11 months

ISO: Honeywell DPS-6 things

by shadoooo＠gmail.com

Hello, I'm remembering of an old post on vcfed, somebody found in the dump a lot of tapes and floppies related to DPS6. IIRC Al Kossow contacted the man to have the dump of the disks... Maybe he has something? Andrea

7 years, 11 months

Vector Graphics PROM/RAM Board?

by wheagy＠gmail.com

This was helpful, thanks. Unfortunately, I did not find anything specifically related to the specific PROM/RAM board that I have. There was a pretty good manual related to the VG PROM III. I'm sure there is some overlap with my board. The documentation I have for my board is very sparse. I'm not sure if this is all that is available, but it discusses jumpers on the board but doesn't give details on how they are configured, or a description of setup and operation of the board. I tried what I could decipher from my docs, but I haven't seen any signs of life. It's also possible that the board is not working, but I'd like to be sure I'm actually using it correctly. Any other pointers appreciated. Thanks...Win > Does anyone have experience with the Vector Graphics PROM/RAM > card...like this one. > http://www.classiccmp.org/dunfield/s100c/vector/promram.jpg > (This is not my card...mine is not jumpered in upper right.) > I have some documentation with mine and two PROMs loaded in A0 and A1 > (VIMON loaded on them), but am having some trouble getting any > response from it. Most likely a config issue or a conflict with other > RAM. Win, There are two resources that might be useful to you: 1. The VECTOR-GRAPHIC mailing list, inhabited by a couple of former Vector employees, among others - http://h-net.msu.edu/cgi-bin/wa?A0=vector-graphic 2. The Vector Graphic file archive - http://vector-archive.org/index.php De

7 years, 11 months

PAL video in the states

by AppleCorey＠optonline.net

So I have a friend who is originally from the U.K. He has his old BBC micro from when he was a kid and wants to be able to use it here in the states. His parents threw out his old TV in the U.K. Is there a way to use a BBC Micro PAL version with a modern US LCD TV? Do some brands of modern TVs support both NTSC and PAL? Let's assume he may need to grab video before the modulator. Thanks, Corey corey cohen u??o? ???o?

7 years, 11 months

ISO: Honeywell DPS-6 things (Josh Dersch)

by michael.99.thompson＠gmail.com

> > From: Josh Dersch <derschjo at gmail.com> > > So I have this DPS-6 taking up space in my basement right now and I thought > I'd put out a call again to see if anyone has anything at all related to > it. I'd like to get the system running but I'm missing: > > - Mass storage controllers (of any type -- floppy, tape, hard drive) > - GCOS 6 operating system media (in any format, any version, etc.) > > If anyone has any hardware lying around, or GCOS 6 media (or knows anyone > who might), drop me a line. > > Alternately, if there's anyone out there who has a need for a DPS-6 parts > machine, let me know... > > Thanks as always! > - Josh > The RICM has a DPS-6, and another with an Ultimate label on it that may have a Pick processor. -- Michael Thompson

7 years, 11 months

What's the rarest or most unusual computer-related item, do you own?

by gkaufman＠the-planet.org

Re: What's the rarest or most unusual computer-related item do you own? Probably the rarest computer-related item I have is a 7AD7 flip/flop module from the Whirlwind I Computer. I'm also rather fond of my Intel Intellec4 System. I also have an Intel Intellec 4/40. - Gary

7 years, 11 months

ISO: Honeywell DPS-6 things

by derschjo＠gmail.com

So I have this DPS-6 taking up space in my basement right now and I thought I'd put out a call again to see if anyone has anything at all related to it. I'd like to get the system running but I'm missing: - Mass storage controllers (of any type -- floppy, tape, hard drive) - GCOS 6 operating system media (in any format, any version, etc.) If anyone has any hardware lying around, or GCOS 6 media (or knows anyone who might), drop me a line. Alternately, if there's anyone out there who has a need for a DPS-6 parts machine, let me know... Thanks as always! - Josh

7 years, 11 months

How do you clean your vintage computers?

by jnc＠mercury.lcs.mit.edu

> From: Ethan O'Toole > very dry clean air? 'Very dry' is _exactly not_ what you want! Air with decent humidity is less likely to build up static voltage. Dave B. had issues with static destroying components in his workshop in winter-time, when with heating, humidity is low. Noel

7 years, 11 months

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test-drb January 2017