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101090 discussions

FA: COMPLETE! HP-86 system including CPM

by rigdonj＠cfl.rr.com

<http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2014665697> Located in Canada. Starting price $100 but it sounds worth it. Joe

24 years

CP/M and Imsai

by ajp166＠bellatlantic.net

From: Bill Sudbrink <wh.sudbrink(a)verizon.net> >You should add that it is a real kick when you finally get >everything right and the sucker actually boots and works! That's still the best reason to do it. It's a total immersion project and once done there are few parts of the system that will not be understood at the software (maybe hardware too) level. >All of my boxes that run CP/M run 2.2 built from the source >found at the "unofficial CP/M web site": Some of those I copied to Tim! I was useing them back when to build mine, from the emergence of V2.2 on. >http://www.retroarchive.org/cpm/archive/unofficial/ Da place! >Finding a build environment is left as an exercise for the reader. I recommend MyZ80 as a starting point. Then work the hardware dependent stuff iteritively on the target via serial download. Allison

24 years

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

by dquebbeman＠acm.org

> > In the case of self-tapping screws it generally pervents the screw from > > starting a new thread (which, if done enough times means there's no metal > > left). In the case of large-diameter fine pitch threads (like lens > > retaining rings in cameras, OK, off-topic, but I can't think of such a > > thread in a computer), it helps prevent cross-threading. > > > > I assumed this trick was well-known, but perhaps not. > > > > -tony > > > Sheesh! I should have read one more message! > > - don I never am as clear in some of my posts as I'd like... The kind of screws I'm lamenting are cast, and cast poorly... I assume everyone knows what casting flash is... these screws have casting flash... when you thread them through, the sheet metal eats at the flash, and you get metal bits from that, and at the same time, the part of the flash that doesn't come off quickly reams the sheet metal to death. *Buy* quality screws? There is an advertisement showing here in the U.S. Midwest for an office supply firm. The scene is set in a "typical" office... some shirts are having a meeting, when another shirt comes in and asks if "can we use the pen"? THE pen. The only pen in the office. When I need a screw for a PC, I typically have to find a PC >from which to remove a screw. Everything ends up with half the screws it was designed to use. Now, we just bought 25 Dells that don't use very many screws. Where oh where will I get a screw when I need one? -dq

24 years

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

by csmith＠amdocs.com

> -----Original Message----- > From: Doc [mailto:doc@mdrconsult.com] > As hard as it may be to envision, I bet _most_ of the subscribers to > this list do not own tap & die sets. Many probably own only Speaking as someone who doesn't own a tap and die, I can say that there's not a day I'm working on something (anything) that I don't think "maybe I should go out and finally get a tap and die set." ;) > Doc, who has a very sharp knife and a flashlight at all times, > or did until September 11.... Doc, you can reply in email if you'd like since it's not really on topic, but why on earth have you stopped carrying them? Chris Christopher Smith, Perl Developer Amdocs - Champaign, IL /usr/bin/perl -e ' print((~"\x95\xc4\xe3"^"Just Another Perl Hacker.")."\x08!\n"); '

24 years

Headstart Explorer Help

by jbstuart＠gulftel.com

Hi again Mr. Carlson, I determined yesterday that I am missing a file or folder entitled "Patches". If you have this file in your Explorer, would you please email it to me? Thank you, John

24 years

should I take RM03's ?

by mcguire＠neurotica.com

On April 5, Douglas H. Quebbeman wrote: > > > I just let Doug Gwyn beat me on one of the 9764? (the larger > > > 300MB drive that's somewhat similar) on e-Bay... > > > > ...the very same Doug Gwyn who once told me that he wasn't > > interested in classic hardware, only software. ;) > > Well, people's interests change, and Doug's a good guy... > I think he's possible spreading himself a bit too thinly, > but then I resemble that remark sufficiently that I'll > not be criticizing anyone for it. Oh yes, I didn't mean to suggest otherwise...I just keep losing eBay auctions to him. ;) -Dave -- Dave McGuire "I thought it would go quickly, St. Petersburg, FL that rubberized bottom..." -Sridhar

24 years

should I take RM03's ?

by dquebbeman＠acm.org

> On April 5, Douglas H. Quebbeman wrote: > > If anyone runs across one of these in either Prime colors or > > straight CDC color/badging, please drop me a line. I have > > terribly fond memories of them... > > > > I just let Doug Gwyn beat me on one of the 9764? (the larger > > 300MB drive that's somewhat similar) on e-Bay... > > ...the very same Doug Gwyn who once told me that he wasn't > interested in classic hardware, only software. ;) Well, people's interests change, and Doug's a good guy... I think he's possible spreading himself a bit too thinly, but then I resemble that remark sufficiently that I'll not be criticizing anyone for it. I've had a few hobby-related things go so far south before that it left me in a seriously deep funk for, well, years. But forgiveness can be liberating, and the good things that have been happening that last few months to the last year more than make up for it. Sometimes, you just gotta take the long view... -dq -Douglas Hurst Quebbeman (DougQ at ixnayamspayIgLou.com) [Call me "Doug"] Surgically excise the pig-latin from my e-mail address in order to reply "The large print giveth, and the small print taketh away." -Tom Waits

24 years

should I take RM03's ?"

by mcguire＠neurotica.com

On April 5, Douglas H. Quebbeman wrote: > If anyone runs across one of these in either Prime colors or > straight CDC color/badging, please drop me a line. I have > terribly fond memories of them... > > I just let Doug Gwyn beat me on one of the 9764? (the larger > 300MB drive that's somewhat similar) on e-Bay... ...the very same Doug Gwyn who once told me that he wasn't interested in classic hardware, only software. ;) -Dave -- Dave McGuire "I thought it would go quickly, St. Petersburg, FL that rubberized bottom..." -Sridhar

24 years

Headstart Explorer

by jbstuart＠gulftel.com

Hi Mr. Clausen, I have been seeking help on my Headstart Explorer XT computer made by Vendex. I cannot seem to restore it after formating the 40 MB hard disk, Automagic. I have all the original disks that came with it when I bought it new in 1990. The Master Disk says to put it in the A drive and then turn on the computer. I have done this several times and it does not seem to work. I have the other disks, DOS System Disk #1, Programs Disk #2, and Disk 3. I would appreciate any assistance you may give me. Thanks, John

24 years

CD-ROM on RT-11?

by Antonio.Carlini＠riverstonenet.com

Tom Leffingwell wrote: >All of the DEC CD-ROMs after the RRD42 were caddyless. R The RRD44 on my desk here needs a caddy. Antonio

24 years

should I take RM03's ?"

by dquebbeman＠acm.org

> A.K.A. CDC 9762 with a Massbus<->SMD adapter in the bottom. Nice > drives. I powered two of them on a 110V 15A circuit....as long as I > spun them up sequentially to let the starting surge die down, the > breaker stayed closed. I never measured the actual current draw, but > that sorta says it. :) If anyone runs across one of these in either Prime colors or straight CDC color/badging, please drop me a line. I have terribly fond memories of them... I just let Doug Gwyn beat me on one of the 9764? (the larger 300MB drive that's somewhat similar) on e-Bay... thx, -dq

24 years

Shoddy Hardware (Was: Re: WW fixtures (was Re: "New"""

by mythtech＠mac.com

>What's an LED flashlight? Do you mean one of thelaser pointers? No, they now make flashlights that rather than using a traditional incandescent bulb, use a super bright LED instead. I have one on my keychain that is this tiny thin black plastic thing. You squeeze it, and the LED on the end lights up. It is REALLY freaking bright (bright enough, that if I shine it out a car window, I can read house numbers across the street), and is powered by two fairly standard replaceable button cell batteries. -chris <http://www.mythtech.net>

24 years

Computers Manufactured in 1986

by stanb＠dial.pipex.com

Hi, "Merle K. Peirce" <at258(a)osfn.org> said: You have the Kelvin? What a lovely surprise. ^^^^^^ [see below...} >On Wed, 3 Apr 2002, Stan Barr wrote: >> Hi, >> >> Ben Franchuk <bfranchuk(a)jetnet.ab.ca> said: >> > Stan Barr wrote: >> > All of a sudden I feel _very_ old ;-( There were no working electronic >> > > computers when I was born...even Collosus was still a few months from >> > > completion.... >> > >> > Well you could go after the mechanical ones :) >> >> Finding one here in the UK would be difficult! We have a very nice >> string (wire, actually..) and pulley tidal computer here in Liverpool. >> It was computing tide table for countries all round the world until >> replaced by an IBM 1130. >> Kelvin?? Must look that one up... ;-) I don't personally have such a thing ;-) But Liverpool University have a Doodson/Lege - magnificnt beast! See www.pol.ac.uk -- Cheers, Stan Barr stanb(a)dial.pipex.com The future was never like this!

24 years

CP/M and Imsai

by ajp166＠bellatlantic.net

From: Hans Franke <Hans.Franke(a)mch20.sbs.de> >> >http://www.retroarchive.org/cpm/archive/unofficial/ > >> Da place! > >Isn't I saw it and forgot. > >http://www.gaby.de/cpm/index.html > >more like the official unofficial web site ? >AFAIR Retroarchive is only snapshoot of the old site, >while the pages at gaby.de are still maintained (and >extended). Is a good thing. The extensions are very fine. Allison

24 years

"When programming is outlawed, only outlaws will program""

by dquebbeman＠acm.org

> On Wed, 3 Apr 2002, Douglas H. Quebbeman wrote: > > > Now John's doing fine, tho work comes to him slowly, > > Only because most people run the other way upon meeting him ;) You just have to stand your ground, and say "no thank you". ;) > > and poor Adam Osborne is slowly dying in a village in > > India, from Parkinson's Disease. BTW, I'm told that one > > of Adam's expressed wishes is that he be left to go in > > peace... Let's all thank him for his efforts and achievements, > > and wish him a Happy Journey into the hereafter. > > Wow, that sucks. I hadn't heard this. Any references? Why > a village in India? IIRC, his father was English, his mother Hindi... There was mention of it over in alt.folklore.computers recently... -dq

24 years

Core Memory Interfacing?

by ajp166＠bellatlantic.net

From: Peter C. Wallace <pcw(a)mesanet.com> > >Hytype IIs also use a 8 bit TTL based microcoded machine (IICRC they use >74LS283 adders, 74LS170 register file chips, along with bipolar PROMS)... > I have a few of those boards... Wich I had the correct prints for the board numbers I do have. Could be fun to bend them into a general purpose 8bitter. Allison

24 years

Seeking Old Wirth-Jensen Pascal Book

by acme_ent＠bellsouth.net

> From: Douglas H. Quebbeman <dquebbeman(a)acm.org> Now isn't THIS a frickin' coincidence -- Joe Rigdon just posted a link to an Ebay auction which included this very tome . . . Glen 0/0 > I used to have a copy of: > > PASCAL User Manual and Report > Authors: Jensen & Wirth > Pub: Springer-Verlag > > It had a silver cover with red & black printing. I loaned it out, > it never came back. > > If anyone has a copy they'd part with, or finds one, please > contact me.

24 years

Core Memory Interfacing?

by dquebbeman＠acm.org

> > From: Douglas H. Quebbeman <dquebbeman(a)acm.org> > > > > >The Hazeltine 2000 is a 1972-era computer terminal. It used core > > >memory, but did not have a microprocesor, and therefore, no > > >software. > > > > > >So at least the Hazeltine did it in hardware. > > > > As did the VT52 and a slew of others. > > Except that every VT52 I've ever worked on used > semiconductor memory, not core. > > Anyway. the fact that there's no microprocessor does not mean that > there's no software. There are plenty of microcoded TTL designs about > (the VT52 is one of them IMHO) which have PROMs containing something that > is reasonably called firmware. Yeah, there is the old 7400 series arithmetic unit... But in my experience, most pre-micro computer equipment used fusible-link ROMs for truth-tables; a transitional item, the Processor Tech SOL's keyboard, is a good example of this. -dq

24 years

PS/2 - E

by SUPRDAVE＠aol.com

In a message dated 4/4/2002 6:28:17 PM Eastern Standard Time, csmith(a)amdocs.com writes: > I have a PS/2 - E. It's a little tiny 80387(?) with a 387 math > coprocessor. Four PCMCIA slots, and a floppy drive. Integrated > video, parallel and serial. 1.4M floppy, and unknown(right now) > hard drive. > > Does anyone know anything about it? > > What can I do with it? Will OS/2 work? What interface does the > hard drive use, BTW? What are my chances of getting BSD or linux > to drive the PCMCIA slots? Anything else I should know about this > one? > It's a neat system. I bought two and still have one in original box with all original ship group items. One of the two I bought was still under 3 year warranty! it's a 486slc class machine and uses a thinkpad floppy drive and 2.5 IDE laptop hard drive. nice and quiet too. takes 16meg max. OS/2 runs fine on it, just like it would on any PS/2 or you can use win 3.1. -- DB Young www.nothingtodo.org

24 years

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

by jeff.kaneko＠juno.com

On Tue, 2 Apr 2002 23:44:50 +0100 (BST) ard(a)p850ug1.demon.co.uk (Tony Duell) writes: > > I think this started when we (the U.S.A.) began importing > > parts made in communist countries. > > Well, I spent most of the weekend inside a small East German camera, > > about 40 years old. > > I was seriously impressed by the general engineering (anyone who > makes a > leaf shutter that can do 1/750s gets my respect!), the build quality > and > the repairer-freindlyness of the design. I've found few cameras as > pleasant to repair. > > So not all communnist-country products are badly made... Actually, I should have specifically fingered Red China, which is the only communist country that is a major supplier to the U.S. I never saw real, unadulterated *junk* until I looked at what has been spewing from Red Chinese factories . . . Jeff ________________________________________________________________ GET INTERNET ACCESS FROM JUNO! Juno offers FREE or PREMIUM Internet access for less! Join Juno today! For your FREE software, visit: http://dl.www.juno.com/get/web/.

24 years

Austin, TX: Free Rack-Mounted VAX

by tsm＠palindrome.org

Free rack-mounted VAX available in Austin, TX. Badged as a MicroVAX II, has a KA-655 CPU (MicroVAX 3800/3900), 32MB of RAM, and standard DELQA, RD54, TK50, etc. In H9642 (42") rackmount cabinet. Located in central Austin. Will go to the landfill if no takers. Please e-mail me if interested or have any questions. Thanks, Terry

24 years

New items have appeared in your saved search: Core Memory

by bill_r＠inetnebr.com

E-mail from eBay: "New items have appeared in your saved search: Core Memory" Clicking on the item link, we find: >The Core Memory Plus Pillow conforms to your head for a soothing, customized fit. > Layered memory foam promotes a proper sleeping posture, while the resilient foam > base provides therapeutic values. I'd think those ferrite beads would leave a pretty nasty imprint on your face, not to mention getting poked by the wires all the time. So, how many bits are these things, anyway??? <DOH!> -Bill Richman (bill_r(a)inetnebr.com) Web Page: http://incolor.inetnebr.com/bill_r Home of the COSMAC Elf Microcomputer Simulator, Fun with Molten Metal, Orphaned Robots, and Technological Oddities.

24 years

Harris Model 8 CPU

by healyzh＠aracnet.com

> Does anyone have any docs on the Harris 24 bit line (or > the Datacraft 6024?) Considering there are still H-series > machines in use, I've not been able to turn up much at > all on them. Somewhere I've got printouts of the JCL 'man' pages from a H550. That's ALL the doc's I've ever really seen on one. The same binder has 3 8" floppies containing documents I created with the MUSE Word Processor. Zane

24 years

CD-ROM on RT-11?

by healyzh＠aracnet.com

> I presume from what you are saying that the Viking/QDT does not have any > boot ROMs. If so, it is one of the very few (probably the only one I know > about) NON-DEC controllers or host adapters that does not have a boot > ROM. There are four versions of the Viking board. Tape, Disk, Tape/Disk, and Disk/Boot (it can only boot a PDP-11). > Any idea if there was a DEC approved CDROM drive which did NOT > use a caddy? Sure, any CD-ROM that they had out after the RRD-42. > Any idea how much an M8190-BB (quad 11/73) might cost? I have a > couple, but I want to keep them for a few more years. But Tom might > find this is the least expensive way to go. It would probably be a worth while upgrade, BUT it would also require a backplane and memory upgrade, and as I recall he doesn't have a budget for this. As for the price I don't remember, but I know they've come down in price (I got mine as part of a trade). Zane

24 years

SCSI options for PDP 11/23

by tom＠sba.miami.edu

After my recent RX02 problems, I've decided I'd like to add a SCSI controller in my 11/23, and keep my programs on a hard disk. What Q-bus controllers will work with RT-11? What's the minimum version of RT-11 that I can get by with? Can I use any disk, or does it have to be something in particular? Thanks, Tom

24 years

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