test-drb

test-drb@ccmp.vtda.org

101090 discussions

by ken＠seefried.com

>(I often think that the downside of ebay is that an item goes to the person > with the deepest pockets, and they're not necessarily the best person to treat > an item nicely)>> >> So eBay is precisely like every other market on the planet.>> >> Shocking. <rolls eyes>><rolls eyes back> I don't think that I claimed that it wasn't. My point was >that it often has a downside when it comes to getting items to people who are >best capable of preserving them for future generations. My appologies, Jules. I had taken your comment as Yet Another instance of the weekly "eBay sucks because people pay more than I would and, as a special snowflake Classic Computer person, I'm an authority and anyone who pays more than I would is an idiot" thread, when in reality it was Yet Another instance of the weekly "eBay sucks because anyone who outbids me is certainly almost possibly definately as far as I'm concerned, as a Special Snowflake classic computer person, unworthy to own it" thread. I sometimes lack the patience to keep track of the multitude of ways that list members condescend to the world at large. My bad.

15 years, 6 months

ProFiles magazine scans.

by thomas.gardner＠sbcglobal.net

> >> I've taken this as an opportunity to reorganize the documentation > section of the retroarchive.org site a bit - It's now split between > hardware& software docs instead of being mixed together. > >> > >> http://www.retroarchive.org FWIW, Norton Internet Security 2011 calls http://www.retroarchive.org a "known malicious web site" for a "malformed container violation" which Norton characterizes as a virus. Tom

15 years, 6 months

OT: definition, Dazzled (was Tony and museums)

by mtapley＠swri.edu

At 19:58 -0500 10/17/10, Fred wrote: >I remember when the dimmer switch was a button for the left foot. Me too, from last week when I drove my (1968 Plymouth) station wagon. "Dazzled" here in the US has a slight connotation of being befuddled by something wonderful, as opposed to something merely bright. http://dictionary.reference.com/browse/dazzled illustrates this; although the first (and presumably most common) definition has to do with excessive light, the second definition uses synonyms like "astonish" and "impress" and all three of the example sentences for the verbs have the traditional associations with pretty things (women, gems, splendor). -- - Mark 210-379-4635 ----------------------------------------------------------------------- Large Asteroids headed toward planets inhabited by beings that don't have technology adequate to stop them: Think of it as Evolution in Fast-Forward.

15 years, 6 months

CompuPro CPU-Z with IMSAI and Front Panel issues

by js＠cimmeri.com

Well, I know it works, 'cause I've done it myself, but it's been awhile. It doesn't work 100% like an original or a Cromemco ZPU, though. After making all the mods to the CPUZ, you have to bring the CPA itself through all its updates if it hasn't been already, then you have to check the buss lines structure between the two boards to ensure are signals are what they should be... especially the ground lines. This last step is because the CPUZ is S-100 IEEE-696 compliant, whereas the CPA was not... John Singleton Subject: CompuPro CPU-Z with IMSAI and Front Panel issues From: Nick Allen <nick.allen at comcast.net> Date: Sun, 17 Oct 2010 00:34:56 -0500 To: cctech at classiccmp.org Anyone have any experience getting the front panel of an IMSAI computer to work with a CompuPro CPU-Z S100 board? I read the documentation (http://maben.homeip.net/static/S100/compupro/cards/CompuPro%20CPU-Z.pdf), and there seems some configuration required, I obviously am missing something as it is not working properly even after I attempt the config in the documentation. If you currently have a board working and can share a photo, or can provide any technical assistance, I would be extremely grateful! Nick

15 years, 6 months

AT&T 3B1 Boot PROM and system software images?

by classiccmp＠philpem.me.uk

Hi guys, Does anyone have images of the Boot PROM and system software for an AT&T 3B1? I've been skimming the 3B1 tech-ref which Steven Hirsch scanned, and it looks to me like an emulator wouldn't be too difficult a prospect. Take the UAE 68k emulator core, bolt on an emulation of the disc controllers, and write something to emulate the display controller. Link against SDL, add salt and pepper to taste. Problem is, the Boot ROM doesn't seem to have been imaged, and the same applies to the software discs. I've had a quick look on my 'usual haunts' (Bitsavers, the Bluefeathertech archive, and Google) but haven't managed to find anything useful... Have any of these items been imaged? Thanks, -- Phil. classiccmp at philpem.me.uk http://www.philpem.me.uk/

15 years, 6 months

AT&T 3B1 Boot PROM and system software images

by djg＠pdp8online.com

> Problem is, the Boot ROM doesn't seem to have been imaged, and the same > applies to the software discs. I've had a quick look on my 'usual > haunts' (Bitsavers, the Bluefeathertech archive, and Google) but haven't > managed to find anything useful. > Disk images here http://www.bitsavers.org/bits/ATT/unixPC/

15 years, 6 months

Oldest original proper computer (stored program etc)

by roger.holmes＠microspot.co.uk

> From: Jochen Kunz <jkunz at unixag-kl.fh-kl.de> > >> I'm not counting the Zuse in Germany as its not a stored program >> machine, and anyway I'm not sure if it is a replica or the original. > What Zuse you are refering to? There are "many". > > The Z22 at the ZKM sholud be complete and and operable. (If the people > at the ZKM have not ruined the machine meanwhile.) It is tube based and > was build 1958. It is a stored program machine for sure. Main memory is > a drum with 8192 words. It is original and has been kept in working > condition most if its lifetime. I was referring to a wartime machine, I think it was Z4 with external tape program. As far I recall it can't do loops and uses relay logic. More of a programmable calculator than a computer. Any idea how often Z22 is actually powered up and run? I must read up on it. Thanks for replying. Roger Holmes.

15 years, 6 months

W. Donzelli on Babbage & Machining

by c.murray.mccullough＠gmail.com

A top-notch machinist even of that time probably could make Babbage's machine. The question I have is - What would he use it for? Computing! Murray

15 years, 6 months

CompuPro CPU-Z with IMSAI and Front Panel issues

by dgari＠msn.com

I may be able to help. I've worked for Morrow Designs (Thinker Toys), Wordstar (MicroPro) and Stoneware (DBMaster). Yes, I am older than Godbout. I have pwned two Altairs and an IMSAI. I took a tour of the giant (empty) Cromemco facility back in the day. Sooo much promise. So sad. If you send me full specs, a case of Seagram's 7, and a detailed symptom of the problem, I will try to help. dgari at msn dot com > Date: Sun, 17 Oct 2010 08:09:22 -0700 (PDT) > From: Scott LaBombard <labomb_s at yahoo.com> > Subject: Re: CompuPro CPU-Z with IMSAI and Front Panel issues > To: "General Discussion: On-Topic and Off-Topic Posts" > <cctalk at classiccmp.org> > Message-ID: <828014.33056.qm at web110803.mail.gq1.yahoo.com> > Content-Type: text/plain; charset=us-ascii > > ----- Original Message ---- > > > From: Nick Allen <nick.allen at comcast.net> > > > > Anyone have any experience getting the front panel of an IMSAI computer to work > >with a CompuPro CPU-Z S100 board? > > I read the documentation > >(http://maben.homeip.net/static/S100/compupro/cards/CompuPro%20CPU-Z.pdf), and > >there > > seems some configuration required, I obviously am missing something as it is > >not working properly even after I attempt > > the config in the documentation. > > > > Hi Nick, > > Assuming that you followed the 'Imsai Front Panel Usage' section in the > referenced document, I would also take a look > at S100 bus pins 54 and 20. I haven't touched any of my Imsai's in several > years, but I do recall struggling to get a > CompuPro motherboard working with the front panel. If memory serves, at a > minimum I had to cut the trace leading to > pin 54 (External/Slave Clear) on the front panel PCB itself. I noticed in the > CPU-Z schematic that it is indeed driving > pin 54 on the bus, so that may well be the issue. > > As for pin 20, it is GROUND in the IEEE 696 spec. I can't tell if the CPU-Z is > driving that pin on the bus or not... if it > is, you may want to cut the trace leading to it on the front panel board as > well. > > I have additional notes re. another potential additional change that may be > required (somewhere) ...I'll attempt to find > them. In the mean time, I would try the pin 54 mod first, and then add the pin > 20 mod if necessary. > > > Scott

15 years, 6 months

The MERT Operating System and the 3B20D

by spedraja＠gmail.com

A comment from MrBill about the *Bell System Technical Journal online*website make me review the last issues of this magazine in PDF available there. The volume 62 issue 1 talks about the MERT Operating System. What's about this OS and platform (3B20D) ? Something availble ? Emulation/Emulators in project or even possible to do ? Sergio 2010/10/18 Bill Bradford <mrbill at mrbill.net> > The telecom nerd in me just exploded. > > Bell System Technical Journal, 1922-1983. > > http://bstj.bell-labs.com/ > > -- > Bill Bradford > Houston, Texas > _______________________________________________ > GEEKS: http://www.sunhelp.org/mailman/listinfo/geeks >

15 years, 6 months

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