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101090 discussions

Bus and Tag Telex drive listed (Ebay alert)

by jwsmail＠jwsss.com

The same vendor which listed the CDC Keystone drives also has listed a pair of Telex drives with Bus & Tag. I don't recall who has the incoming 4341, but this would be a great and for the mainframe, compact half inch tape subsystem. I would check, but I believe this would have all you need for hooking it up from what the listing says for two drives. Located in Sacramento, Ca, would need freighting & shipping, as auction is marked local pickup only. Hope someone saves them. Probably way more compact and less fuss the 3420's. I doubt anyone will find many 3411's which would be the next most desirable, since it also has a builtin controller if you get the 370 version. With the 3411, you have to watch out for IBM 36 or some such which looked the same, but only had a single Bus cable to the host. But I digress. the 18" x 18" x 18" block of steel you don't have to deal with in the 3803 and probably 900# of just the controller makes a lot of difference. Thanks Jim Telex-8020-Model-266-Controller-with-Tape-Drive-One-additional-Tape-Drive http://www.ebay.com/itm/272516253336

8 years, 9 months

How do you clean your vintage computers?

by barythrin＠gmail.com

Am I misremembering or wasn't denatured alchohol the recommended type when cleaning rubber type computer parts (i.e. rollers in laser printers). I thought isopropyl dried them out. ?I don't know the affects on either other than that though.

8 years, 9 months

Compatibility of 1101A and 1101A1

by vintagecomputer＠bettercomputing.net

Ok. ?I'm assuming they can work together then? ?I have scoured the net and found a couple of pics of mark-8 boards with a mix of 1101a and 1101a1.. or maybe thats why they werent working? :) Sent from my Samsung device -------- Original message -------- From: dstalk at execulink.com Date: 2017-01-20 2:54 PM (GMT-08:00) To: cctalk at classiccmp.org Subject: Re: Compatibility of 1101A and 1101A1 On Fri Jan 20 15:19:24 2017 vintagecomputer at bettercomputing.net (Brad H) wrote: > > 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. > According to my TI manual the 1101A is 1500 ns while the A1 is 1000 ns.

8 years, 9 months

Compatibility of 1101A and 1101A1

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.

8 years, 9 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

8 years, 9 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

8 years, 9 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

8 years, 9 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

8 years, 9 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?

8 years, 9 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

8 years, 9 months

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