test-drb

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101090 discussions

by derschjo＠gmail.com

Anyone have any idea where one might track down a copy of TI System V for the S1500 series? I've had these two TI UNIX systems for awhile now, a TI S1505 and a TI S1507 (68030 and 68040-based, respectively). They came without hard drives or OS media and so they've basically been doorstops. I asked around about OS media back when I got them (in 2013) and at the time I got no leads; I'm guessing things probably haven't changed, but I figured I'd ask again just in case... Seem like nice machines, wish I could do something with 'em... - Josh

8 years, 2 months

ISO: Seattle Computer Producs 300 S100 board

by ethan＠757.org

I jumped the gun and bought a SCP 200B board. I grew up a DOS kid, so figured it would be fun to run 86-DOS. I found out about the SCP 300 board, that contains the boot loader and serial port. Anyone have an extra they would be interested in unloading? Thanks -- : Ethan O'Toole

8 years, 2 months

brand new DC600A data cartridges

by elson＠pico-systems.com

Anybody need DC600A data cartridges? These are still in the carrying case, wrapped in the sealed wrapper. I have a box of 5. They are from early 1990's. I also have one used cart, but it is pretty dusty. Jon

8 years, 2 months

VAX 4000 PSU (H7874) Schematics

by aaron＠aaronsplace.co.uk

I am trying to repair a VAX 4000 power supply. Does anyone have the schematics? I can't find anything on BitSavers and I'm not completely convinced it was even designed by DEC. The VAX turns on and the status LED stays on F. The DC lamp does not illuminate on the PSU. 5V rail appears fine but there is nothing from the 12V rail. There were some *very* dodgy looking caps which I have replaced, and some *very* exploded MOSFETs, which I have also replaced. If anyone has schematics, or know where I might find them, it would be much appreciated. Thanks, Aaron.

8 years, 2 months

Looking for an ex-Sun employee; Alan Charlesworth

by jplist2008＠kiwigeek.com

Hey all; I'd love to talk to Alan Charlesworth, who used to work for Sun and (I believe) CRS before that. I'm interested in his perspective on some historical happenings and Sun design work. If anyone knows him and might be willing to get me in contact with him I'd very much appreciate it. Unfortunately while I can find several papers he's written they all provide his Sun address, and there are three other prominent Alan Charlesworths that are making searching for him difficult. My thanks for your help; - JP

8 years, 2 months

New Listings for Sellam's Collection Sales

by kurt＠hamm.me

I, too, have emailed Sellam with no response. But, I guess I am adding to the "broad-based whine" Wow. Kurt. ---------- Forwarded message ---------- From: Sellam Ismail <sellam.ismail at gmail.com> To: Randy Dawson <rdawson16 at hotmail.com> Cc: "General Discussion: On-Topic and Off-Topic Posts" < cctalk at classiccmp.org> Bcc: Date: Wed, 6 Jun 2018 21:59:42 -0700 Subject: Re: New Listings for Sellam's Collection Sales Hi Randy. I have stuff that you can't find on eBay. And I am not offering the eBay experience. This is me, Sellam, you are dealing with. When I can find actual closing sales online (I need some place to start), I generally go on the lower end of the mean of the data I find. It's a collectors market, sometimes I'm high, sometimes I'm low, but I'm trying. Do you know how to assess the value of items as diverse as what I'm listing? I do, it's a lot of work. Come help out if you have the time, I'll trade you for stuff. The listed prices are what I'm asking, as stated. I'm always open to offers, as stated. I price fairly, to move it, and if something sits for a while, you have a good chance of negotiating a price more to your liking, if you ask, but know that I am willing to sit on some things. I invested a lot of time, effort, blood, sweat, tears and money into my collection over many years. I'd like to recoup some of it. All you have done is propounded a broad-based whine. if there's something that interests you but the price is not right, let me know. I'm making many sales and many deals, stuff is moving. Ask and ye may well receive. Just be reasonable. Sellam On Wed, Jun 6, 2018 at 7:57 PM, Randy Dawson <rdawson16 at hotmail.com> wrote: > Inspired by ebay for all the items there that never sell for the asking > price. > > > C'mon Sellam, you want to get out, how about lowering the prices a bit to > move things along? > > > ------------------------------ > *From:* cctalk <cctalk-bounces at classiccmp.org> on behalf of Ed Sharpe via > cctalk <cctalk at classiccmp.org> > *Sent:* Wednesday, June 6, 2018 7:50 PM > *To:* sellam.ismail at gmail.com; cctalk at classiccmp.org; > cctalk at classiccmp.org > *Subject:* Re: New Listings for Sellam's Collection Sales > > do the prices keep increasing? > > In a message dated 6/4/2018 10:02:53 PM US Mountain Standard Time, > cctalk at classiccmp.org writes: > > > Hi Folks. > > I've reorganized my sales listings into a Google Sheets set. The > introductory page is here: > > https://docs.google.com/spreadsheets/d/1I53wxarLHlNmlPVf_ > HJ5oMKuab4zrApI_hiX0pNmy48/edit#gid=0 > > Use the tabs on the bottom of the sheet to navigate to the various "rooms". > > New items have been added and are listed here: > > https://docs.google.com/spreadsheets/d/1I53wxarLHlNmlPVf_ > HJ5oMKuab4zrApI_hiX0pNmy48/edit#gid=949372371 > > New items are always added to the New Arrivals Niche, so that's the first > place you should check when you visit my virtual online warehouse. I will > post a message to this list and the VCFed forums whenever new items are > listed, which will occur more regularly. > > As always, please inquire directly to me via e-mail for the fastest > response. > > Thanks! > > Sellam >

8 years, 2 months

CDC 6600 display character generation

by jnc＠mercury.lcs.mit.edu

Hi, I'm hoping someone here knows the low-level nitty-gritty on how the characters on the CDC 6600 console CRTs were generated. Thornton, "Design of a Computer", says "Control of the beam .. is provided by electrostatic deflection ... electronically converting from the symbol .. to deflection voltages", but alas, doesn't say how that conversion is done. And I looked in some CDC 6600 documentation online, alas, even less detail. But looking at the characters (reproduced on the dust jacket), the curves sure make it look like it wasn't anything simple (e.g. using display vectors, as one source indicated). Does anyone know? (BTW, the VT11 in DEC's GT40 used bit maps for its built-in character geneator, and the hardware did tiny raster zones to display them!) Noel

8 years, 2 months

ISO: DD11-DF backplane

by derschjo＠gmail.com

Hi all -- I finally tracked down the EIS option for my 11/40 and I have it up and running nicely (Ultrix-11 ATM, but I'll be playing with other stuff). Right now I only have a 4-slot DD11 backplane for SPC/MUD boards and I'd like a bit more space for expansion. I have a few DD11-DK backplanes but without modifying the cabling it won't work in a BA11-F chassis. If anyone has a DD11-DF they'd be up for trading for the -DK variant (or for something else) please drop me a line. Thanks! Josh

8 years, 2 months

Whence 556?

by tshoppa＠wmata.com

The 729 CE manual quotes 555 BPI. I?m not sure when it became 556. http://bitsavers.trailing-edge.com/pdf/ibm/magtape/729/223-6845_729_CEman_1… The IBM 728 was 248 BPI. Before that it was the nice round number 200 BPI. I tried permutations of standard IPS and round number data rates and don?t see anything that yields exactly 556BPI. Tim

8 years, 2 months

Weird Lear-Siegler ADM-3A board

by jnc＠mercury.lcs.mit.edu

> Jon Elson > How/where should I submit this? This is now available through here: http://gunkies.org/wiki/Term-Mite_ST_Smart_Terminal I put in a little infrastructure around it (articles on the Term-Mite, NS405, etc), using info I dug up online. Noel

8 years, 2 months

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