test-drb April 2002

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Computers Manufactured in 1986

by dquebbeman＠acm.org

> > The Mac! > > Eeek. > > How about a nice Apollo workstation? D'Oh! Yeah, what he said, too... -dq

22 years, 3 months

Computers Manufactured in 1986

by dquebbeman＠acm.org

> > What are some good old computers manufactured in 1986? > Well, my Prime 2455 is one example... That *may* be the year John's Cyber 180/960 was built... Any Apollo workstation made that year... Oh! Oh! Didn't the Mac II premiere in '86? Or was it '87? IBM RS/6000? Kaypro 2000? -dq

22 years, 3 months

IBM PS/1 Recovery/Install diskettes available

by SUPRDAVE＠aol.com

In a message dated 4/2/02 5:05:52 PM Eastern Standard Time, r_beaudry(a)hotmail.com writes: << A bit too new to be on topic, but... I was scrounging through some stuff yesterday, and unearthed a set of original diskettes for an IBM PS/1. >> do you know what model PS/1? old computers, old cars and sundry items www.nothingtodo.org

22 years, 3 months

Shoddy Hardware (Was: Re: WW fixtures (was Re: "New" PDP-8))

by dquebbeman＠acm.org

> > > Loboyko Steve wrote: > > > WW sockets are getting more expensive. I won't use > > > anything but machine tooled pin sockets, which are > > > even more expensive. Buf going nuts and wasting your > > > precious free time over a flaky socket is really, > > > really expensive. > > > > I, too, can recommend only going with machined-pin sockets; anything less > > isn't worth the hassle of trying to chase down phantom problems. This > > goes for soldered designs as well as WW. > > I'll 'third' it... > > I will use nothing but turned-pin sockets (that's what they're called in > the UK) now. I once spent most of a day tracking down a fault that was > caused by a flaky contact on a folded-metal type of socket. Never again. > I've got more enjoyable things to do... Speaking of machined parts versus something else... Anyone notice how commodity PCs have screws that have clearly been *cast* onstead of *turned/Machined*? Everytime you thread one into a hole, you generate a nice supply of metal shavings. Not good. To get back on topic, when did this trend start? The IBM PC, PC/XT, and PC/AT used machined/turned fasteners. Lots of classic non-consumer hardware used various "captive mechanisms" instead of plain old screws and bolts. And how about sharp edges inside a chassis? Older hardware tends to have spent a little time in the hands of a whitesmith, who added lots of finishing detail like smooth edges that don't cut. -dq

22 years, 3 months

ZX81 and 6116

by acme_ent＠bellsouth.net

> From: Tony Duell <ard(a)p850ug1.demon.co.uk> > > The text refers to 2x2114 or a 4118 installed in the UK version and a > > 2K option for export - possibly there are 2 versions of the board? > > OK, I've pulled my ZX81 apart. The PCB claims to be 'Issue 1'. I have never seen any board marked "Issue 2." Did it exist? > So, fit L2 if you install a 6116 (A10 on pin 19). Fit L1 if you install a > 4118 (I am not sure what pin 19 is, I can't find a 4118 data sheet, but > at least one schematic I have calls it 'E', presumably an active high > enable signal). Fit either or no links if you install 2 * 2114s. Never > fit both links, or you'll short A10 to the +5V rail. Today I checked out about two dozen ZX81/TS1000s. They've been piling up in a box and today I finally got to them. Here's what I found: All of the 1K boards had two 2114s and no jumper installed. All but one of the 2K boards had a single 2016 and L2 was installed. One 2K board had a 6116 and L2 was installed. The board was operational and appeared unmodified. I replaced a socketed 2016 on a working board with the 6116 pulled from the above-mentioned board, and the board still worked. So I think it's safe to say that L2 is required for a single-RAM-chip board, and that a 6116 is a drop-in replacement for a 2016. Never did see a 4118. Perhaps the use of it would change things, jumper-wise. Glen 0/0

22 years, 3 months

Pr1marily Contented (Longish)

by steven_j_robertson＠hotmail.com

>From: "Douglas H. Quebbeman" <dquebbeman(a)acm.org> >Reply-To: classiccmp(a)classiccmp.org >To: "ClassicCmp List" <classiccmp(a)classiccmp.org> >Subject: Pr1marily Contented (Longish) >Date: Mon, 1 Apr 2002 23:23:03 -0500 > >Now that my Prime 2455 is fully operational again, I >want to thank everyone who offered advice here. After >giving up on repairing the power supply, I decided to >buy one. I assuming you don't need the one I have set aside? SteveRob _________________________________________________________________ Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp.

22 years, 3 months

Strange idea in VAX

by vance＠ikickass.org

Ok. I wonder what would happen if I stuck a DWBUA in the BI cage of my VAX 7000-650, and added a UNIBUS cabinet, then I were to take a Qniverter and add a Qbus framebuffer? Peace... Sridhar

22 years, 3 months

Shoddy Hardware (Was: Re: WW fixtures (was Re: "New" PDP-8))

by csmith＠amdocs.com

> -----Original Message----- > From: Douglas H. Quebbeman [mailto:dquebbeman@acm.org] > Chris Smith and I were discussing repair techniques offline, and the > above were amongst the discussed techniques. > However, I prefer erecting totems next to the troublesome devices... I still maintain the usefulness of runestones, incense, and rituals involving chant and the drawing of "signs of power" around the device. Chris Christopher Smith, Perl Developer Amdocs - Champaign, IL /usr/bin/perl -e ' print((~"\x95\xc4\xe3"^"Just Another Perl Hacker.")."\x08!\n"); '

22 years, 3 months

Computers Manufactured in 1986

by mcguire＠neurotica.com

On April 2, Christopher Smith wrote: > AT&T Unix PC. 512k to 4M of ram [usually 1M], 40 to 60M hard drive, > all in one system with a monochrome green screen, removable keyboard, > and 3 button mouse. It also had a 5.25" floppy. It ran Unix SystemV > R 3.0 or 3.5, I vaguely remember a port of some other system to run > on it. Check some of the web pages you can find. There was a built > in graphical windowing system, dynamically loadable drivers, and if > you could get the ethernet board, or extra serial ports, you could > run multi-user configurations. It could read/write (through special > bundled software) MS-DOS disks, and there was also a DOS board for it > with an 8088 CPU or something like that, and some RAM to let it > actually run DOS, and DOS apps. What wonderful machines these are. The first ones, though, shipped with 10MB drives, not 40MB, and it was SYSVR2, not 3. I sold these machines at a computer store when I was in high school, and later had one of my own as my first real UNIX machine. Stupidly I sold it many years ago. Thanks to the assistance of a fellow lister (hi Mark!) I finally have one now, which I will keep forever. -Dave -- Dave McGuire "...it's leaving me this unpleasant, St. Petersburg, FL damp feeling on my shorts..." -Sridhar

22 years, 3 months

Computers Manufactured in 1986

by csmith＠amdocs.com

> -----Original Message----- > From: blacklord [mailto:blacklord@telstra.com] > And it's the best one (subjective) out of all the others so far > mentioned. An A1000 can still happily run just about anything you can > throw at it, plus it's emminently expandable. ... if you can find the expansions. :) Personally I like the Intergraph on my list. Never seen one, but if I had, I would own one by now. As for a more common system (more common than the Intergraph, not the Amiga), a UnixPC with 1 meg of ram, and maybe 60MB of disk will give you access to a really decent subset of available Unix (and possibly MS-DOS) software. It will also have a decent development environment, given the installation of a dev kit. On the other hand, the Atari ST plays quite a few more games. :) Chris Christopher Smith, Perl Developer Amdocs - Champaign, IL /usr/bin/perl -e ' print((~"\x95\xc4\xe3"^"Just Another Perl Hacker.")."\x08!\n"); '

22 years, 3 months

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test-drb April 2002