- test-drb@ccmp.vtda.org - classiccmp.org

Xerox 8/16 available in Baltimore, MD area

by vcf＠siconic.com

See below. Contact original sender. Reply-to: <bernhardbang(a)netscape.net> ---------- Forwarded message ---------- Date: Fri, 07 Feb 2003 19:43:03 -0500 From: bernhardbang(a)netscape.net Subject: Zerox 16/8 Gentlemen, I have a Zerox 16/8 computer, complete with instruction manuals. Barely used. Includes Monitor and keyboard. Is it of any value? Do you want it? Who might want it? Thank you for your reply! Bernhard Bang 4208 Wickford Road Baltimore, MD 21210 -- Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------------ International Man of Intrigue and Danger http://www.vintage.org * Old computing resources for business and academia at www.VintageTech.com *

23 years, 2 months

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Seeking info on two PROM chips.

by pete＠dunnington.u-net.com

On Feb 10, 8:03, Paul Thompson wrote: > On Mon, 10 Feb 2003 pete(a)dunnington.u-net.com wrote: > > > E8 means they're 128KB, or 1 Megabit. The part numbers you quote are > > listed in Compaq Assisted Services online catalogue at $4 apiece, so > > you might still be able to get them from DEC/HP. > > I am not sure I have the URL for this, unless it is something I know by > another name.... Try a web search for "Compaq Assisted Services" or for the 23- part numbers you quoted? :-) Or http://www-legacy.digital.com/CAS-Catalog/pric.html -- Pete Peter Turnbull Network Manager University of York

23 years, 2 months

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Electrolytic cap "protection"

by pete＠dunnington.u-net.com

On Feb 10, 10:58, Bryan Pope wrote: > Awhile ago there was a thread about electrolytic capacitors popping and > then destroying the motherboard they are on. One of the ideas was to > replace them before they go. > > Now I was wondering about another idea... Would it be okay to encase > the capacitor in silicone gel? Then when the capacitor pops, it wouldn't > spread its electrolyte all over the motherboard. > > But would this cause other problems with heat or something? Would it > further shorten the life of the capacitor? Well, it's not going to improve its life, and it does mean that when it goes, it will make a louder bang, since it will be harder for the electrolyte to get out. Silicone isn't terribly strong, so it won't stop it. If you look at most electrolytic caps, you'll see they're designed to come apart under stress without turning into small grenades; the ends are scored, or the seals are deliberately made less strong than the aluminium case. -- Pete Peter Turnbull Network Manager University of York

23 years, 2 months

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Assembly on a Apple IIc+

by pete＠dunnington.u-net.com

On Feb 8, 11:06, Jim Keohane wrote: > The reference to "one cycle" instruction may have been referring > to there being 2 cpu cycles per clock cycle. Also, there's the "pipelining" > some say the 6502 does when the last (or only) byte of an instruction is > acted upon simultaneous to next instruction's 1st byte (opcode) being > fetched > > So perhaps "one instruction per clock cycle" may be awfully close with > pipelining and with use of zero page. You must be thinking of some different 6502 to the rest of us :-) As Sellam said, no 6502 opcode takes less than two clock cycles to execute, and most take more (up to 7): the only 2-cycle instructions are the ones with implied addressing, like RTS, CLI, TAX, ... This is why a 6502 running typical well-written code, running on a 2MHz clock, manages at best around 0.7 MIPS. There's no pipelining at all in a 6502. No overlap of instructions whatsoever. Zero-page instructions like LDA $12 take three clock cycles. There aren't two CPU cycles per clock cycle. Perhaps you're thinking of the fact that the 6502 uses a two-phase clock, and does part of the CPU cycle during phi-1, and part during phi-2? > Of course, we're talking Apple ]['s which, if I can trust my memory, > steal every other clock cycle to refresh memory. I believe you're thinking of how it uses part of the clock cycle when the CPU isn't accessing memory, not alternate clock cycles. > > > p.s. I also did quite well with 6502 asm code in cpu speed tests vs > > > 80x86 and Z80 programmers. The zero page, for all intents and purposes, > > > is 256 registers. That was the designers' intention, but you have to remember that it takes an extra clock cycle to access a zero-page location rather than a register. -- Pete Peter Turnbull Network Manager University of York

23 years, 2 months

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Who here has a Planar ELT-320?

by glenslick＠hotmail.com

Had I known that I might have bid on the first one that came up on eBay recently. I thought it might be just a fancy paperweight without the proper keyboard. I'll watch for a reasonable deal on one of those to show up again sometime. >From: Eric Dittman <dittman(a)dittman.net> > >The ELT320 can use either an AT-type keyboard or an LK201-type >keyboard (I have an LK401 connected to mine). _________________________________________________________________ Help STOP SPAM with the new MSN 8 and get 2 months FREE* http://join.msn.com/?page=features/junkmail

23 years, 2 months

2
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PACEMIPPS?

by ken＠seefried.com

From: Joe <rigdonj(a)cfl.rr.com> >Can anyone tell me exactly what a PACEMIPS PIMM - 33SG144C is? It's >made byPerformance Semiconductor but it's not listed on their (POOR!) >website. I THINK it might be an R33000 embedded processor but I'm not >sure. Performance Semi, AFAIK, generally does semiconductors for military/aerospace applications. I recall dimly that they made some MIL-SPEC MIPS devices; this would perhaps be one of them. The part number you cite is not familiar, but might be one of the line of R3000+R3010 derivatives. Not as esoteric as their relatively popular MIL-STD-1750A processors, but unusual none-the-less. I've actually got some Performance Semi 1750A chipsets...I must think of something to do with them... Ken

23 years, 2 months

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Electrolytic cap "protection"

by bpope＠wordstock.com

Hey all, Awhile ago there was a thread about electrolytic capacitors popping and then destroying the motherboard they are on. One of the ideas was to replace them before they go. Now I was wondering about another idea... Would it be okay to encase the capacitor in silicone gel? Then when the capacitor pops, it wouldn't spread its electrolyte all over the motherboard. But would this cause other problems with heat or something? Would it further shorten the life of the capacitor? Cheers, Bryan

23 years, 2 months

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How about this price not being accepted for a Magazine

by cb＠mythtech.net

>> Heck, things like the first appearance of Superman get about $15,000, and >> I would consider that WAY more collectible than the first issue of >> MacWorld even WITH signatures. > >Ummmm.... I believe the going rate for the first appearance of Superman in >Action Comics #1 is over $100,000.... I can't say I am surprised. Its been a LONG time since I looked into comic values (I have a box of a few #1's around, but I don't think of anything worth much). Either way... MacWorld ain't the first appearance of Superman, heck, it ain't even the first appearance of the Mac! -chris <http://www.mythtech.net>

23 years, 2 months

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How about this price not being accepted for a Magazine

by cb＠mythtech.net

>The people bidding on this magazine have no idea what they're doing. I >have at least 2-3 copies of this issue (san autographs, but still). Yeah, I can't imagine it being too rare. There is a store where I vacation (jersey shore), that sells old magazines and the likes. With a few odd execptions, nothing ever seems to go for more than about $50 max. (Exceptions include things like an unaltered copy of the Traci Lords issue of Penthouse, I think they wanted $125 for that... although I would think selling it would actually be illegal since she was under 18 for the shoot). Heck, things like the first appearance of Superman get about $15,000, and I would consider that WAY more collectible than the first issue of MacWorld even WITH signatures. -chris <http://www.mythtech.net>

23 years, 2 months

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How about this price not being accepted for a Magazine

by mbg＠TheWorld.com

>>I think anybody that would pay that kind of money without a LOT more >>proof of authenticity is an idiot! A rich idiot perhaps but an idiot >>none the less. >I noticed that the seller has zero feedback so they must be new to E-bay >(or they've changed their identity). Sounds like a grand formula for a >rip-off to me! Unfortunately, a positive feedback (say, in the hundreds) also does not guarantee that you won't get ripped-off. I recently (well, November of last year), purchased something through ebay from someone who had about 140+ for their feedback... and very few negatives. I sent them the payment for the item ($300+) and although they kept sending emails about how they were going to get it out to me, with some extras due to the delay, the person never did ship the item. His contact information was totally bogus (the mail-to address was different from what the person had on file with ebay, which I didn't get until it was too late and I was reporting a problem). The phone number was no good (again, I didn't have that until there was a problem). Now, the person's account is inactive... So, don't assume anything from a feedback profile value... Megan Gentry Former RT-11 Developer +--------------------------------+-------------------------------------+ | Megan Gentry, EMT/B, PP-ASEL | email: mbg at world.std.com | | | | | "this space | (s/ at /@/) | | unavoidably left blank" | URL: http://world.std.com/~mbg/ | | | "pdp-11 programmer - some assembler | | (DEC '77-'98) | required." - mbg KB1FCA | +--------------------------------+-------------------------------------+

23 years, 2 months

5
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Free 19" Monitor - HP A4033A - UK

by dave＠naffnet.org.uk

I have a 19" HP monitor that is free to anyone who can collect, or arrange collection, from east Berkshire. This is a 3/5 BNC connected beastie (sync-on-green or separate sync) and is the perfect companion to a 700 series workstation. There is some screen-burn , but the monitor is perfectly usable. This monitor is taking up too much space, so it's time to overcome the hoarding instinct and pass it on. Cheers, Dave.

23 years, 2 months

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Seeking info on two PROM chips.

by pete＠dunnington.u-net.com

On Feb 9, 19:24, Brian Chase wrote: > Does anyone have details on the following ROM or PROM chips from a > DEC VAXstation 4000 VLC? Their identifying numbers are LUP9327580 > (DEC part# 23-286E8-00) and LUP9331604 (DEC part# 23-287E8-00); > they're each 40-pin DIPs. The U's may actually be O's or 0's; it's > difficult to tell given the DEC part number label placement. 23-xxxEx is a ROM/EPROM part number, so they may well be programmable. E8 means they're 128KB, or 1 Megabit. The part numbers you quote are listed in Compaq Assisted Services online catalogue at $4 apiece, so you might still be able to get them from DEC/HP. Is there any type number under the DEC label? Are they brown ceramic with a quartz window in the top? If so, they're probably EPROMs, most likely 27C1024 (64K x 16 bit). If not, they're probably one-time PROMs, or possibly Flash. If they're EPROMs, it's unlikely you overwrote them, unless you had them in a programmer. -- Pete Peter Turnbull Network Manager University of York

23 years, 2 months

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Odd ideas that I've had lately...

by Robert_Feldman＠jdedwards.com

Just get an HP 200LX palmtop. It's basically a PC-XT (MS-DOS 5.0, custom 80186 processor) with a monochrome CGA screen (640x200). It can run most standard MS-DOS programs, has built-in terminal emulation, serial and IR ports, a PCMCIA socket that can handle standard of Compact Flash RAM (cards bigger than 256MB might require a driver, depending on brand). You can get upgraded models with up to 96MB internal RAM and a 2x crystal (~32MHz). Runs on 2 AA batteries for days, and can use rechargable batteries (with internal charging). Has instant-on and sleep. There is ethernet and TCP/IP software for it, as well as web and email software. Lastly, you can hook it up to a cell phone to get your email. Only problem is, it's not quite 10 years old :). -----Original Message----- From: John Boffemmyer IV [mailto:john_boffemmyer_iv@boff-net.dhs.org] Sent: Saturday, February 08, 2003 7:44 PM To: cctech(a)classiccmp.org Subject: Re: Odd ideas that I've had lately... <snip> Say, I go over to Sridhar's house and decide I want to grab the docs on an old DECServer, most palms don't have the storage space or interface unless you go find a program written for the machine you are on and have an IR port or happen to have a Palm cradle for that model (nowadays one cradle does NOT fit all). A mini-PC portable, like the idea I had, would have standard built-in interfaces that would allow for this, plus the needed storage space. Like simple FTP'ing the data over a standard tcp/ip protocol on the built-in Ethernet or such, this would make portable data sharing easier. <snip>

23 years, 2 months

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UNSUBSCRIBE CLASSICCMP dweebgeek@yahoo.com

by dweebgeek＠yahoo.com

__________________________________________________ X-Apparently-To: dweebgeek(a)yahoo.com via 66.218.93.72; 02 Feb 2003 15:05:09 -0800 (PST) X-Track: 2: 100 Return-Path: <cctalk-admin(a)classiccmp.org> Received: from 209.145.140.36 (EHLO huey.classiccmp.org) (209.145.140.36) by mta584.mail.yahoo.com with SMTP; 02 Feb 2003 15:05:08 -0800 (PST) Received: from huey.classiccmp.org (localhost [127.0.0.1]) by huey.classiccmp.org (8.11.6/8.11.6) with ESMTP id h12N53m31131; Sun, 2 Feb 2003 17:05:03 -0600 (CST) (envelope-from cctalk-admin(a)classiccmp.org) Received: (from mailnull@localhost) by huey.classiccmp.org (8.11.6/8.11.6) id h12N47931111 for cctalk-post; Sun, 2 Feb 2003 17:04:07 -0600 (CST) (envelope-from cctalk-admin) X-Authentication-Warning: huey.classiccmp.org: mailnull set sender to cctalk-admin using -f Received: from smtp13.eresmas.com ([62.81.235.113]) by huey.classiccmp.org (8.11.6/8.11.6) with ESMTP id h12N46m31107 for <cctech(a)classiccmp.org>; Sun, 2 Feb 2003 17:04:06 -0600 (CST) (envelope-from vsimon(a)eresmas.com) Received: from [192.168.108.108] (helo=smtp08.in.mad.eresmas.com) by smtp13.eresmas.com with esmtp (Exim 4.10) id 18fT7k-0005Lq-00 for cctech(a)classiccmp.org; Mon, 03 Feb 2003 00:02:04 +0100 Received: from [80.224.147.249] (helo=VNOMIS.eresmas.com) by smtp08.in.mad.eresmas.com with esmtp (Exim 4.10) id 18fT7j-0008TF-00 for cctech(a)classiccmp.org; Mon, 03 Feb 2003 00:02:04 +0100 X-Sender: vsimon(a)pop.eresmas.com X-Mailer: QUALCOMM Windows Eudora Version 5.2.0.9 To: cctech(a)classiccmp.org From: Vicente =?iso-8859-1?Q?Sim=F3n?= <vsimon(a)eresmas.com> Subject: UNSUBSCRIBE CLASSICCMP vsimon(a)eresmas.com In-Reply-To: <019301c2cb0f$27299620$0101c80a@p2350> References: <Pine.NEB.4.44.0302020842130.27815-100000(a)haiku.jarai.net> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; format=flowed X-Antivirus: avast! (VPS 31/01/2003), Outbound message X-Antivirus-Status: Clean X-SA-Do-Not-Run: Yes X-SA-Exim-Scanned: No; SAEximRunCond expanded to false Sender: cctalk-admin(a)classiccmp.org Errors-To: cctalk-admin(a)classiccmp.org X-BeenThere: cctalk(a)classiccmp.org X-Mailman-Version: 2.0.10 Precedence: bulk Reply-To: cctalk(a)classiccmp.org List-Unsubscribe: <http://www.classiccmp.org/mailman/listinfo/cctalk>, <mailto:cctalk-request@classiccmp.org?subject=unsubscribe> List-Id: General Discussion: On-Topic and Off-Topic Posts <cctalk.classiccmp.org> List-Post: <mailto:cctalk@classiccmp.org> List-Help: <mailto:cctalk-request@classiccmp.org?subject=help> List-Subscribe: <http://www.classiccmp.org/mailman/listinfo/cctalk>, <mailto:cctalk-request@classiccmp.org?subject=subscribe> List-Archive: <http://www.classiccmp.org/pipermail/cctalk/> X-Original-Date: Mon, 03 Feb 2003 00:02:33 +0100 Date: Mon, 03 Feb 2003 00:02:33 +0100 Content-Length: 41

23 years, 2 months

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PS2 Mouse

by julesrichardsonuk＠yahoo.co.uk

Tony, > While this is true on the genuine PS/2 machines (and the mouse protocol > is very similar to a PC/AT or PS/2 keyboard protocol), there's no reason > why it _has_ to be. It would be possible to make an ISA card with a > programmed microcontroller on it (maybe an 8042, like the keyboard > controller) with the host port at some otherwise unused I/O address, and > then use a special driver (similar in concept to the serial and bus mouse > drivers) to access it. well, I suppose if you're going to go the microcontroller route you may as well make it an external unit with the serial controller included... no messing around with custom drivers on the host system then. Bit beyond me though I'm afraid, but as the original poster said I'm surprised nobody's done it, especially a hobbyist... I suppose it'd need its own power supply though which is a shame. cheers Jules Everything you'll ever need on one web page >from News and Sport to Email and Music Charts http://uk.my.yahoo.com

23 years, 2 months

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cctech digest, Vol 1 #360 - 29 msgs

by paul.shubel＠verizon.net

> I'm either being imprecise or various readings I have done were >imprecise. The reference to "one cycle" instruction may have been referring >to there being 2 cpu cycles per clock cycle. Also, there's the "pipelining" >some say the 6502 does when the last (or only) byte of an instruction is >acted upon simultaneous to next instruction's 1st byte (opcode) being >fetched Hi Everyone, I have recently researched this but it is not true. The so called "pipelining" was just that internally when the CPU does an ADD instructions it does some sub-operations currently. This was hyped in some texts by using (wrongly) the word "pipelining". Normally, "pipelining" for micros refers to overlaping the fetch of one instruction with the "execute phase" of the previous instruction. The 6502 does none of this. Note, the Z8 actually does some limited pipelining. This put it ahead in bragging rights amongs the 8-bitters. Cheers, Paul ----- Original Message ----- From: <cctech-request(a)classiccmp.org> To: <cctech(a)classiccmp.org> Sent: Saturday, February 08, 2003 1:00 PM Subject: cctech digest, Vol 1 #360 - 29 msgs > Send cctech mailing list submissions to > cctech(a)classiccmp.org > > To subscribe or unsubscribe via the World Wide Web, visit > http://www.classiccmp.org/mailman/listinfo/cctech > or, via email, send a message with subject or body 'help' to > cctech-request(a)classiccmp.org > > You can reach the person managing the list at > cctech-admin(a)classiccmp.org > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of cctech digest..." > > > Today's Topics: > > 1. Re: Assembly on a Apple IIc+ (Sellam Ismail) > 2. Re: Unassembled Superboard II (Sellam Ismail) > 3. Re: Assembly on a Apple IIc+ (Sellam Ismail) > 4. Kaypro II available. (Alan Emmerson) > 5. Re: WANTED: RA7x Enclosure/Operator Ctrl. Panel (Eric Dittman) > 6. Re: interesting find (Tony Duell) > 7. Re: MicroVAX 3800 Power Cable (Tony Duell) > 8. Re: Rookie HP-85 problem (Tony Duell) > 9. Re: Old Computer Companies (John Honniball) > 10. Re: Assembly on a Apple IIc+ (Mike Ford) > 11. RE: WANTED: RA7x Enclosure/Operator Ctrl. Panel (John Willis) > 12. Re: MicroVAX 3800 Power Cable (pete(a)dunnington.u-net.com) > 13. RE: Looking for source of MFM or RLL drives (Kelly Leavitt) > 14. RE: Disk drive head locking (DEC RA-82 and HP 7920) (John Willis) > 15. RE: Looking for source of MFM or RLL drives (John Willis) > 16. Re: Rookie HP-85 problem (Joe) > 17. Re: Old computers from HP, maybe? Anybody know where HP is > collecting/storing them? (Fred Cisin (XenoSoft)) > 18. Re: Old computers from HP, maybe? Anybody know where HP is > collecting/storing them? (John Allain) > 19. Re: Looking for source of MFM or RLL drives (Jerome H. Fine) > 20. Re: Old computers from HP, maybe? Anybody know where HP is > collecting/storing them? (R. D. Davis) > 21. RE: Atari ST Help (Lawrence Walker) > 22. TTY ASR-33 Platen? (George R. Gonzalez) > 23. Re: Assembly on a Apple IIc+ (Jim Keohane) > 24. Re: Assembly on a Apple IIc+ (Jim Keohane) > 25. Re: Grundy Newbrain fix (lgomez) > 26. OT Need parts (James Rice) > > --__--__-- > > Message: 1 > Date: Fri, 7 Feb 2003 15:27:17 -0800 (PST) > From: Sellam Ismail <foo(a)siconic.com> > To: <cctalk(a)classiccmp.org> > Subject: Re: Assembly on a Apple IIc+ > Reply-To: cctech(a)classiccmp.org > > On Fri, 7 Feb 2003, Hans Franke wrote: > > > I used BigMac for all my projects, including the doomed SSC > > ROM... (*1) > > > > > > Gruss > > H. > > (*1) I don't know if I already told the story > > I told you I would optimize your code for you :) > > Sellam Ismail Vintage Computer Festival > -------------------------------------------------------------------------- ---- > International Man of Intrigue and Danger http://www.vintage.org > > * Old computing resources for business and academia at www.VintageTech.com * > > --__--__-- > > Message: 2 > Date: Fri, 7 Feb 2003 15:34:32 -0800 (PST) > From: Sellam Ismail <foo(a)siconic.com> > To: <cctalk(a)classiccmp.org> > Subject: Re: Unassembled Superboard II > Reply-To: cctech(a)classiccmp.org > > On Fri, 7 Feb 2003, Bill Sudbrink wrote: > > > Vintage Computer Festival wrote: > > > Someone sent me an unassembled Ohio Scientific Superboard II kit in its > > > original box the other day. > > > > Oh! You lucky son-of-a-gun! What REV? > > The solder mask on the board says "Ohio Scientific Model 600 CPU" and "REV > D". > > The manual is copyright 1982 and the original invoice is dated August 4, > 1982. > > Sellam Ismail Vintage Computer Festival > -------------------------------------------------------------------------- ---- > International Man of Intrigue and Danger http://www.vintage.org > > * Old computing resources for business and academia at www.VintageTech.com * > > --__--__-- > > Message: 3 > Date: Fri, 7 Feb 2003 15:40:34 -0800 (PST) > From: Sellam Ismail <foo(a)siconic.com> > To: <cctalk(a)classiccmp.org> > Subject: Re: Assembly on a Apple IIc+ > Reply-To: cctech(a)classiccmp.org > > On Fri, 7 Feb 2003, Jim Keohane wrote: > > > p.s. I also did quite well with 6502 asm code in cpu speed tests vs > > 80x86 and Z80 programmers. The zero page, for all intents and purposes, > > is 256 registers. 6502 is single cycle instruction execution. Look up > > definitions of RISC and the 6502 is arguably RISC-like. > > No 6502 instruction takes less than 2 cycles to complete. > > Sellam Ismail Vintage Computer Festival > -------------------------------------------------------------------------- ---- > International Man of Intrigue and Danger http://www.vintage.org > > * Old computing resources for business and academia at www.VintageTech.com * > > --__--__-- > > Message: 4 > From: "Alan Emmerson" <aje(a)technet2000.com.au> > To: <classiccmp(a)classiccmp.org> > Subject: Kaypro II available. > Date: Sat, 8 Feb 2003 09:44:55 +1000 > Reply-To: cctech(a)classiccmp.org > > I have two Kaypro II that I have owned from new. Both are upgraded to run > at higher clock speeds and one has a cooling fan fitted. One has the PC8 > ROM There is a complete set of the bundled distribution software (Select, > Perfect Writer etc) with manuals, including that really first class ground > breaking program SBasic, and other programs that I wrote in SBasic > including multi variable non linear regression analysis. Also Unidos and > etc which allows the floppy drives to emulate those of other machines. > > > I used one of these machines to run the first simulation of the CSIRO > Sydney to Melbourne high speed railway. > > What price might one expect for such a a machine?. > > Alan Emmerson > Brisbane QLD > Australia > > --__--__-- > > Message: 5 > From: Eric Dittman <dittman(a)dittman.net> > Subject: Re: WANTED: RA7x Enclosure/Operator Ctrl. Panel > To: cctalk(a)classiccmp.org > Date: Fri, 7 Feb 2003 17:46:03 -0600 (CST) > Reply-To: cctech(a)classiccmp.org > > > Wanted: RA7x Enclosure/Operator Ctrl. Panel > > Where are you located? > -- > Eric Dittman > dittman(a)dittman.net > Check out the DEC Enthusiasts Club at http://www.dittman.net/ > > --__--__-- > > Message: 6 > From: ard(a)p850ug1.demon.co.uk (Tony Duell) > Subject: Re: interesting find > To: cctalk(a)classiccmp.org > Date: Fri, 7 Feb 2003 20:42:32 +0000 (GMT) > Reply-To: cctech(a)classiccmp.org > > > And when nobody cared about the size, weight and power consumption > > of computers... ;-) > > > > > The HP 9100A/B calculators use a similar architecture, using > > > wire bobbins instead of rods, for a microsequence store. > > The HP9100B was entirely discrete transistors [1], with normal R/W core > memory, the core-on-a-rope microcde store and inductively coupled PCB > tracks for the main program ROM. > > The HP9810 which replaced it was built from TTL chips, with 256 nybble > PROMs for the microocde store (and the ALU, which was a couple of > programmed PROMs), 512 byte ROMs for the main program store, and 256 bit > DRAMs (1103s) for the R/W memory. > > Admittedly the 9810 had space for an internal thermal printer, and it had > more user memory. But in the basic configuration it did less ('Math' > functions, like SIN, COS, TAN were on a plug-in ROM module on the 9810, > and bulit-in on the 9100). But the 9810 (the machine built with ICs) is > larger than the 9100. > > [1] OK, there are 8 IC op-amps in the 9100B on the card reader PCB (read > amplifier and comparator for the 3 data tracks and the clock track). But > the machine will run without the card reader ;-) > > -tony > > --__--__-- > > Message: 7 > From: ard(a)p850ug1.demon.co.uk (Tony Duell) > Subject: Re: MicroVAX 3800 Power Cable > To: cctalk(a)classiccmp.org > Date: Fri, 7 Feb 2003 23:21:19 +0000 (GMT) > Reply-To: cctech(a)classiccmp.org > > > On Feb 6, 22:33, Tony Duell wrote: > > > > > I don't see how you can do a proper test without a visual inspection > > of > > > the connections... And I've yet to see a moulded connector that > > provides > > > a proper strain-relief for the cable. > > > > A good PAT tester will check at a sensible current (though admittedly a > > lot only check earth continuity at a proper current). As for strain > > I've never met a PAT tester that tests the current-carrying conductors at > a significant current, mainly because there's no easy way to do this > without dismantling the unit under test (if the cable is fixed) -- the > maximum current you could pass would be the normal operating current of > the unit (by simply applying mains to it), which is not enough. Even then > you couldn't measure the voltage drop across one of the conductors. > > You may have guessed that I don't trust PAT testers, and I have no faith > at all in the safety standards as usually applied. Proper safety tests on > the other hand... > > > releif, well you're not supposed to swing the equipment by the power > > cable, Tony! > > True, but equally I don't expect the outer covering of the cable to pull > out of the moulded connector in normal use exposing the single-insulated > wires inside. Which has happened to many moulded cables round here. > > I assume you'd fail a rewirable plug with the cord grip missing/not used > on an electrical safety test. I certainly would. But most moulded cables > are not a lot better than that. > > > > The cable mounted section looks like a normal 'cold condition' > > _socket_, > > > but there are 3 round pins sticking out of the face of it (where the > > > socket holes would be). The chassis part looks like the normal plug > > > (recessed into the panel, etc) with 3 holes in it in place of the > > normal > > > plug pins. > > > > I've a feeling I've seen this used somewhere -- but not recently, and I > > can't think where :-( > > I've thought of another place I've seen them used. Leitz Focomat 1 > enlarger, at the top of the column. Connector for the lampholder assembly. > > -tony > > --__--__-- > > Message: 8 > From: ard(a)p850ug1.demon.co.uk (Tony Duell) > Subject: Re: Rookie HP-85 problem > To: cctalk(a)classiccmp.org > Date: Fri, 7 Feb 2003 23:41:27 +0000 (GMT) > Reply-To: cctech(a)classiccmp.org > > > OK, I took it apart to take alook inside and clean it up. Now I can't get > > the damn cover back on. > > It seems to get caught on the tape eject button. Don't want to break the > > cover forcing it. > > > > Are you supposed to separate the monitor/tape brown faceplate from the rest > > of the cover first? > > No, pull off the eject button (you should do this before removing the > cover). Then the cover fits easily. Put the button back on when the cover > is screwed in place. > > -tony > > --__--__-- > > Message: 9 > Date: Sat, 08 Feb 2003 00:08:16 +0000 > From: John Honniball <coredump(a)gifford.co.uk> > Organization: Stoke Gifford Computer Museum > To: cctalk(a)classiccmp.org > Subject: Re: Old Computer Companies > Reply-To: cctech(a)classiccmp.org > > Hans B Pufal wrote: > >> Eliott computers from UK. What happened to them? I mean Eliott, not N...a > > There are a few Elliot 803s preserved in Britain. One at Bletchley > Park, another at the Science Museum, and probably others. They have > an interesting power supply: the incoming mains is used to charge > a *big* Ni-Cd battery, which powers the computer. The same battery > is used in the Nimrod aircraft, and the RAF have kindly supplied > spares for the 803s. > > -- > John Honniball > coredump(a)gifford.co.uk > > --__--__-- > > Message: 10 > Date: Fri, 07 Feb 2003 16:03:12 -0800 > To: cctalk(a)classiccmp.org > From: Mike Ford <mikeford(a)socal.rr.com> > Subject: Re: Assembly on a Apple IIc+ > Reply-To: cctech(a)classiccmp.org > > > > Get a copy of BigMac, and go ahead. it's a nice all in one > > > environment, and works fine on every Apple. > > > >Oh Yeah! BigMac (or as we used to call it at Software Productions, > >"BigHack"). > > > My favorite was always LISA, Laser Interactive Symbolic Assembler, a > complete editor/asm/runtime kind of setup. > > I need to look around and figure what the status is of the program, but I > have most of the versions of it that ever existed. > > --__--__-- > > Message: 11 > Subject: RE: WANTED: RA7x Enclosure/Operator Ctrl. Panel > Date: Fri, 7 Feb 2003 18:02:00 -0700 > From: "John Willis" <jwillis(a)arielusa.com> > To: <cctalk(a)classiccmp.org> > Reply-To: cctech(a)classiccmp.org > > New Mexico, USA > > > -----Original Message----- > From: Eric Dittman > Sent: Fri 2/7/2003 4:46 PM > To: cctalk(a)classiccmp.org > Cc: > Subject: Re: WANTED: RA7x Enclosure/Operator Ctrl. Panel > > > Wanted: RA7x Enclosure/Operator Ctrl. Panel > > Where are you located? > -- > Eric Dittman > dittman(a)dittman.net > Check out the DEC Enthusiasts Club at http://www.dittman.net/ > > [demime 1.01a removed an attachment of type application/ms-tnef which had a name of winmail.dat] > > --__--__-- > > Message: 12 > Date: Sat, 8 Feb 2003 01:24:44 GMT > From: pete(a)dunnington.u-net.com > To: cctalk(a)classiccmp.org > Subject: Re: MicroVAX 3800 Power Cable > Reply-To: cctech(a)classiccmp.org > > On Feb 7, 23:21, Tony Duell wrote: > > > On Feb 6, 22:33, Tony Duell wrote: > > > > > > > I don't see how you can do a proper test without a visual > inspection > > > of > > > > the connections... And I've yet to see a moulded connector that > > > provides > > > > a proper strain-relief for the cable. > > > > > > A good PAT tester will check at a sensible current (though > admittedly a > > > lot only check earth continuity at a proper current). As for > strain > > > > I've never met a PAT tester that tests the current-carrying > conductors at > > a significant current, mainly because there's no easy way to do this > > without dismantling the unit under test (if the cable is fixed) -- > the > > maximum current you could pass would be the normal operating current > of > > the unit (by simply applying mains to it), which is not enough. Even > then > > you couldn't measure the voltage drop across one of the conductors. > > A proper PAT tester to current standards has a socket for each end of > an IEC cable, and each cable is supposed to be individually tested with > both ends plugged in to the tester. > > > > releif, well you're not supposed to swing the equipment by the > power > > > cable, Tony! > > > > True, but equally I don't expect the outer covering of the cable to > pull > > out of the moulded connector in normal use exposing the > single-insulated > > wires inside. Which has happened to many moulded cables round here. > > I've only seen one do that -- and it was an instant candidate for the > wirecutters at both ends. A proper visual inspection is supposed to be > the first part of the PAT. > > > I assume you'd fail a rewirable plug with the cord grip missing/not > used > > on an electrical safety test. I certainly would. > > Yes. The first thing I do with any multiblock is take it apart to see > how the ends are wired -- the cheap ones are usually in a condition > where I feel compelled to re-do the job. > > -- > Pete Peter Turnbull > Network Manager > University of York > > --__--__-- > > Message: 13 > From: Kelly Leavitt <CCTalk(a)catcorner.org> > To: "'cctalk(a)classiccmp.org '" <cctalk(a)classiccmp.org> > Subject: RE: Looking for source of MFM or RLL drives > Date: Fri, 7 Feb 2003 20:12:08 -0500 > Reply-To: cctech(a)classiccmp.org > > Yes, the OS allows entering of drive geometry. Actually only supports MFM up > to 70Meg. RLL drives will of course work, just not to RLL capacity. I'm > looking for the largest drives I can find. > > From: Ethan Dicks > --- Kelly Leavitt <CCTalk(a)catcorner.org> wrote: > > Any good sources of MFM or RLL drives. This would be for a Tandy 6000 > > running Xenix. > > > > I'm looking for 70 Meg or higher MFM (110 RLL capacity). > > Hmm... those aren't so common (in the DEC world, there are two > choices - the RD53 (Miniscribe 1325) and the RD54 (Maxtor XT2190). > > I take it you aren't constrained by a narrow set of expected > geometries? (i.e. - you have a running system and/or the install > procedure asks you about the drive rather than assuming?) > > -ethan > > --__--__-- > > Message: 14 > Subject: RE: Disk drive head locking (DEC RA-82 and HP 7920) > Date: Fri, 7 Feb 2003 18:37:25 -0700 > From: "John Willis" <jwillis(a)arielusa.com> > To: <cctalk(a)classiccmp.org> > Reply-To: cctech(a)classiccmp.org > > I seem to have only up to RA81, but everything else :( > -----Original Message----- > From: Dan Veeneman > Sent: Fri 2/7/2003 3:04 PM > To: cctech(a)classiccmp.org > Cc: > Subject: Disk drive head locking (DEC RA-82 and HP 7920) > > Hello, > > I'm scheduled to pick up a pair of DEC RA-82 drives along > with an HP 7920 drive in the next couple of weeks. > > I don't have any technical documentation for either of these > drives, but I'd be very interested in learning the proper > procedure for locking down the heads on these drives > prior to moving them. If anyone has the steps to take > for either or both of these drives, please drop me a note > or point me to the proper archive. > > They've already been warehoused, so it might be too late, > but I'd like to be as safe as I can. > > Thanks! > > > Cheers, > > Dan > www.decodesystems.com/wanted.html > > [demime 1.01a removed an attachment of type application/ms-tnef which had a name of winmail.dat] > > --__--__-- > > Message: 15 > Subject: RE: Looking for source of MFM or RLL drives > Date: Fri, 7 Feb 2003 18:43:20 -0700 > From: "John Willis" <jwillis(a)arielusa.com> > To: <cctalk(a)classiccmp.org> > Reply-To: cctech(a)classiccmp.org > > I have an RD54 available... no idea whether its working. > -----Original Message----- > From: Kelly Leavitt > Sent: Fri 2/7/2003 6:12 PM > To: 'cctalk(a)classiccmp.org ' > Cc: > Subject: RE: Looking for source of MFM or RLL drives > > Yes, the OS allows entering of drive geometry. Actually only supports > MFM up > to 70Meg. RLL drives will of course work, just not to RLL capacity. I'm > looking for the largest drives I can find. > > From: Ethan Dicks > --- Kelly Leavitt <CCTalk(a)catcorner.org> wrote: > > Any good sources of MFM or RLL drives. This would be for a Tandy 6000 > > running Xenix. > > > > I'm looking for 70 Meg or higher MFM (110 RLL capacity). > > Hmm... those aren't so common (in the DEC world, there are two > choices - the RD53 (Miniscribe 1325) and the RD54 (Maxtor XT2190). > > I take it you aren't constrained by a narrow set of expected > geometries? (i.e. - you have a running system and/or the install > procedure asks you about the drive rather than assuming?) > > -ethan > > [demime 1.01a removed an attachment of type application/ms-tnef which had a name of winmail.dat] > > --__--__-- > > Message: 16 > Date: Fri, 07 Feb 2003 21:27:05 > To: cctalk(a)classiccmp.org > From: Joe <rigdonj(a)cfl.rr.com> > Subject: Re: Rookie HP-85 problem > Reply-To: cctech(a)classiccmp.org > > Pull on the tape eject button. It's mounted on a stud and will pull right off. Just push it back on to re-install it. > > Joe > > At 01:11 PM 2/7/03 -0500, you wrote: > >OK, I took it apart to take alook inside and clean it up. Now I can't get > >the damn cover back on. > >It seems to get caught on the tape eject button. Don't want to break the > >cover forcing it. > > > >Are you supposed to separate the monitor/tape brown faceplate from the rest > >of the cover first? > > > >HELP > > > >RH > > --__--__-- > > Message: 17 > Date: Fri, 7 Feb 2003 20:13:09 -0800 (PST) > From: "Fred Cisin (XenoSoft)" <cisin(a)xenosoft.com> > To: cctalk(a)classiccmp.org > Subject: Re: Old computers from HP, maybe? Anybody know where HP is > collecting/storing them? > Reply-To: cctech(a)classiccmp.org > > > Hewlett-Packard is hoping a little green will help make computer owners > > recycle more of their old tech gear. The computer maker is testing a > > no, they are hoping that a little green will help make computer owners get > rid of their "old" tech gear and buy more new stuff. > > > > meets the charities' minimum standards. "For the most part what we get in > > here is pretty darn old," St. Denis said. HP's recycling program accepts > > . . . some of it is as much as two years old!!!! > > > A while back, HP began to "recycle" toner cartridges for the purpose of > making fewer empties available for refilling (which competes with their > new cartridge sales). > > > What do YOU think their primary motivation is?? > > > "Re: Old computers from HP, maybe?" > ^^^^ > It is a ONE-WAY process, of old computers going TO HP to remove them from > circulation. > > > -- > Grumpy Ol' Fred cisin(a)xenosoft.com > > --__--__-- > > Message: 18 > From: "John Allain" <allain(a)panix.com> > To: <cctalk(a)classiccmp.org> > Subject: Re: Old computers from HP, maybe? Anybody know where HP is > collecting/storing them? > Date: Fri, 7 Feb 2003 23:28:25 -0500 > Reply-To: cctech(a)classiccmp.org > > > A while back, HP began to "recycle" toner cartridges for the > > purpose of making fewer empties available for refilling (which > > competes with their new cartridge sales). > > New cartridge sales?? I bought one of their "New" cartridges. > Here's what the small print says: > "This newly manufactured product may contain parts and > materials recovered from the HP Printing Supplies Return > and Recycling Program." > > > What do YOU think their primary motivation is?? > > Selling refills themselves, But just Calling them new. > > John A. > > --__--__-- > > Message: 19 > Date: Fri, 07 Feb 2003 23:59:51 -0500 > From: "Jerome H. Fine" <jhfinepw4z(a)compsys.to> > Organization: Just Sufficient > To: cctalk(a)classiccmp.org > Subject: Re: Looking for source of MFM or RLL drives > Reply-To: cctech(a)classiccmp.org > > >Kelly Leavitt wrote: > > > > I'm looking for 70 Meg or higher MFM (110 RLL capacity). > > Hmm... those aren't so common (in the DEC world, there are two > > choices - the RD53 (Miniscribe 1325) and the RD54 (Maxtor XT2190). > > Jerome Fine replies: > > By the way, the RD53 is a Micropolis 1325 or 1335 with the > R7 jumper added to the logic board. Otherwise, the DEC > RQDX2 will not recognize the drive. I have never tried them > on the RQDX3 without the R7 jumper, but it might be possible - > probably NOT. > > And while there may still be rare occasions when you can actually > complete the FORMAT required for an RD53, I would recommend > that they be used ONLY for scratch at this point at the end of their > life cycle. I suppose that there might still be the odd RD53 that is > still living a good life, but most (almost all) have become so unreliable > that I strongly recommend NOT using them for any files you care to > see the next time you turn the computer on. > > Sincerely yours, > > Jerome Fine > -- > If you attempted to send a reply and the original e-mail > address has been discontinued due a high volume of junk > e-mail, then the semi-permanent e-mail address can be > obtained by replacing the four characters preceding the > 'at' with the four digits of the current year. > > --__--__-- > > Message: 20 > Date: 8 Feb 2003 00:57:58 -0500 > Date: Sat, 8 Feb 2003 00:57:58 -0500 > From: "R. D. Davis" <rdd(a)rddavis.org> > To: cctalk(a)classiccmp.org > Subject: Re: Old computers from HP, maybe? Anybody know where HP is > collecting/storing them? > Organization: why? > Reply-To: cctech(a)classiccmp.org > > Quothe Fred Cisin (XenoSoft), from writings of Fri, Feb 07, 2003 at 08:13:09PM -0800: > > > Hewlett-Packard is hoping a little green will help make computer owners > > > recycle more of their old tech gear. The computer maker is testing a > > > > no, they are hoping that a little green will help make computer owners get > > rid of their "old" tech gear and buy more new stuff. > > Wasn't HP the company that was saving and preserving the "vintage" > computer equipment turned back in to them? I think I read something > about this on their web site, or somewhere, about a year or two ago. > That's not to say they weren't scrapping newer equipment, however, and > I don't recall reading how old the equipment had to be to qualify for > preservation. > > > What do YOU think their primary motivation is?? > > > > > > "Re: Old computers from HP, maybe?" > > ^^^^ > > It is a ONE-WAY process, of old computers going TO HP to remove them from > > circulation. > > Yep... even the vintage ones if they still save them from being > scrapped; surely they still get sent off to a warehouse somewhere to > keep them out of circulation. Speaking of circulation, an HP-3000 > Series III computer running MPE-IV was used to process data for the > circulation department of the Baltimore Sun back around 1990... it was > quite a contrast to see that, and it's disk farm, right across the > room from a sea of big blue cabinets for an IBM mainframe system. > > -- > Copyright (C) 2002 R. D. Davis The difference between humans & other animals: > All Rights Reserved an unnatural belief that we're above Nature & > rdd(a)rddavis.org 410-744-4900 her other creatures, using dogma to justify such > http://www.rddavis.org beliefs and to justify much human cruelty. > > --__--__-- > > Message: 21 > From: "Lawrence Walker" <lgwalker(a)mts.net> > To: "Jeffrey S. Worley" <Technoid(a)30below.com>, cctalk(a)classiccmp.org > Date: Fri, 7 Feb 2003 23:27:36 -0600 > Subject: RE: Atari ST Help > Reply-To: cctech(a)classiccmp.org > > Hmmm how did my address get into this ? > As the old flame went "check your attributes" > and in this case your deletions. > > Lawrence > > On 7 Feb 2003, , Jeffrey S. Worley wrote: > > > BTW, the Link II's they are selling are NEW. Call and ask or > > leave an email. I just checked their catalog. The link I > > bough was from them IIRC. It came in it's original packaging > > and was perfect in all respects. Still is perfect though now > > used... ;-) > > > > Regards, > > > > Jeff > > > > > Yes, I know about that site, but they want WAY too > > > much money for a used adapter for an old computer. > > > > > > You would think that at this point, they'd be... > > > > > > > > lgwalker@ mts.net > > > lgwalker@ mts.net > > --__--__-- > > Message: 22 > From: "George R. Gonzalez" <grg(a)umn.edu> > To: <classiccmp(a)classiccmp.org> > Subject: TTY ASR-33 Platen? > Date: Fri, 7 Feb 2003 07:59:24 -0800 > Organization: Hearing Research Lab > Reply-To: cctech(a)classiccmp.org > > I have been blessed with *two* Teletype ASR-33's. Apart from a minor > cleaning, they are going to be just fine. EXCEPT the rubber platens are as > hard as Chinese arithmetic! In case you havent experienced this, if the > platen gets hard, the printer doesnt print well-- the typehead kinda bounces > off the paper and doesnt leave a clean dark mark. > > I've tried the usual remedies-- acetone cleans them up, but they're still > rock hard. > > I need some suggestions! Should I try ArmorAll (known to soften rubber, > given time), "Platen cleaner", "belt dressing", "french dressing", or what? > > Note that I don't need to clean or make it "grippier", it needs to be > softened, a lot. > > Regards, > > > George > > --__--__-- > > Message: 23 > From: "Jim Keohane" <jimkeo(a)multi-platforms.com> > To: <cctalk(a)classiccmp.org> > Subject: Re: Assembly on a Apple IIc+ > Date: Sat, 8 Feb 2003 11:06:13 -0500 > Organization: Multi-Platforms, Inc. > Reply-To: cctech(a)classiccmp.org > > Sellam Ismail, > > I'm either being imprecise or various readings I have done were > imprecise. The reference to "one cycle" instruction may have been referring > to there being 2 cpu cycles per clock cycle. Also, there's the "pipelining" > some say the 6502 does when the last (or only) byte of an instruction is > acted upon simultaneous to next instruction's 1st byte (opcode) being > fetched > > So perhaps "one instruction per clock cycle" may be awfully close with > pipelining and with use of zero page. > > Of course, we're talking Apple ]['s which, if I can trust my memory, > steal every other clock cycle to refresh memory. > > Cheers, - Jim > > Jim Keohane, Multi-Platforms, Inc. > > "It's not whether you win or lose. It's whether you win!" > ----- Original Message ----- > From: "Sellam Ismail" <foo(a)siconic.com> > To: <cctalk(a)classiccmp.org> > Sent: Friday, February 07, 2003 18:40 > Subject: Re: Assembly on a Apple IIc+ > > > > On Fri, 7 Feb 2003, Jim Keohane wrote: > > > > > p.s. I also did quite well with 6502 asm code in cpu speed tests vs > > > 80x86 and Z80 programmers. The zero page, for all intents and purposes, > > > is 256 registers. 6502 is single cycle instruction execution. Look up > > > definitions of RISC and the 6502 is arguably RISC-like. > > > > No 6502 instruction takes less than 2 cycles to complete. > > > > Sellam Ismail Vintage Computer > Festival > > -------------------------------------------------------------------------- > ---- > > International Man of Intrigue and Danger > http://www.vintage.org > > > > * Old computing resources for business and academia at > www.VintageTech.com * > > --__--__-- > > Message: 24 > From: "Jim Keohane" <jimkeo(a)multi-platforms.com> > To: <cctech(a)classiccmp.org> > Subject: Re: Assembly on a Apple IIc+ > Date: Sat, 8 Feb 2003 11:13:14 -0500 > Organization: Multi-Platforms, Inc. > Reply-To: cctech(a)classiccmp.org > > Not sure if this was mentioned as another option: > > There's the MERLIN assembler. Versions for ProDos and DOS 3.3. > > - Jim > > Jim Keohane, Multi-Platforms, Inc. > > "It's not whether you win or lose. It's whether you win!" > ----- Original Message ----- > From: "Ron Hudson" <rhudson(a)cnonline.net> > To: <cctalk(a)classiccmp.org> > Sent: Friday, February 07, 2003 00:19 > Subject: Assembly on a Apple IIc+ > > > > What do I need to get started with 6502 Assembly on an apple II? > > --__--__-- > > Message: 25 > From: "lgomez" <lgomez(a)cdromsa.es> > Subject: Re: Grundy Newbrain fix > To: cctech(a)classiccmp.org > Date: Sat, 08 Feb 2003 17:31:42 +0100 > Reply-To: cctech(a)classiccmp.org > > Please, can you say me how can i solve this problem? I've a > Newbrain AD with the same problem. > > Regards > > On Fri, 07 Feb 2003 17:43:50 +0100 > Torben Ring <toring(a)inet.uni2.dk> wrote: > > Hi, > > > > I have a Grundy Newbrain, which wouldn't start, or if it > > started it would only show random chars in the display. > > I've found out what was wrong with the machine and if > > anyone needs help with fixing his (or hers) machine, I'll > > be able to point to the problem. As far as I can tell, > > this is a common problem with all these machines, and it > > only gets worse as time goes by. > > > > Regards, > > > > Torben Ring > > --__--__-- > > Message: 26 > Date: Sat, 08 Feb 2003 11:28:06 -0600 > From: James Rice <jrice54(a)charter.net> > To: cctalk(a)classiccmp.org > Subject: OT Need parts > Reply-To: cctech(a)classiccmp.org > > I need one of the beige plastic headed screws that secure the side cover > on a Dell Dimension case. The is for my UMAX S900 that shares a > PaloAlto Design case with the earlier Dell Dimensions. I also need two > blank drive filler panels for a HP NetServer LC II. > > James > -- > http://webpages.charter.net/jrice54/classiccomp2.html > > > > End of cctech Digest

23 years, 2 months

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Main-frame hard drive (maybe) avaliable

by shawnmhoffman＠yahoo.com

Hello, I just thought of something which might be of interest to someone out there. Several years ago I got ahold of a monsterous main-frame type hard drive. I really have no idea what kind of system it came from, but the box was about three feet long, one foot tall, and one foot wide (as I remember it). The disks inside were about 8-10 inches across (I could see them through a little window in the casing). You could turm two screw like things on the front of the box and then lift the cover. Inside was the disk assembly and then another panel of electronics that would swing down from the cover of the box. This whole monster weighed about 60 pounds or so I would say. On the back were two receptacles for connecting it to whatever computer it originally came from. The plugs that plugged into the recepticles were sqaure as I remember it and there was a flat 1" wide cable that came out of each plug. The cables had been cut off of so I don't know what the other end looked like. On the front of the box there were two or three buttons I think. Probably one reset, one power on/off, and one lock/unlock--that's what I seem to recall. Anyway, I took this hard drive back where I got it from because I couldn't figure out any use for it. But if any of you know how to connect this thing to something and are interested in it I may be able to get it back again. It's been out in the weather for several years, but from my experience wheather doesn't affect computers much--the older ones at least. I have gotten some computers that were snowed and rained on and had mud splattered all over them, but they still worked. There was even one computer I got where the battery had leaked all over the mother board and started to eat it away.....but it still worked!! Needless to say, I was amazed!! Well, let me know if you are intersted in this hard drive. I am raising money for a mission trip and that's part of the reason I wondering if this has any value to anybody. Also I hate to see it "rot" out there. ;-) I can't send you any pictures of the drive itself because I don't have it right now, but I think I do have the cable lying around here yet. I could send pics of that or try to describe it if that would help any. By the way, I think the brand name on this device may have been "Digital"; I could be wrong, but a lot of the other parts I got there were made by the "Digital" company so I suspect the hard drive may have been too. (I also have a large plug-in electronics board from some main-frame type computer that I got at the same place if anybody has an interest in that). I know old main-frame parts have value to the right person and I wouldn't mind trying to get it if someone is interested, but please be sure you are really seriously interested before you ask me to get it! :-) It is more than likely buried under a lot of junk and I would have to dig it out which could be quite a job!! But I would be more than willing to try and get it if you are seriously interested; I just don't want to go through all that work and then be stuck with it myself. :-) I can try to describe it better if that would help, but I'll wait to see if anybody has an interest first. Take care all, Shawn :-) Smile, God loves you!!

23 years, 2 months

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Looking for info on UNISYS UN6065 B50 system

by jrkeys＠concentric.net

Got UNISYS UN6065 yesterday at an auction and got only two hits on Google site both no good. Any one know were I can find more? Thanks

23 years, 2 months

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DEC Extenders up for auction

by kyrrin＠bluefeathertech.com

Onwers of DEC Qbus or UniBus boxes; It may interest you to know that I've put up a pair of DEC'ish card extenders for auction on E-pay. Here's the link: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=1247&item=3401378577 There's a dual-height and a quad-height, selling as a pair, starting at $10.00. Thanks for putting up with another ad. ;-) -=-=-=-=-=-=-=-=-=-=-=-=-=-=- Bruce Lane, Owner & Head Hardware Heavy, Blue Feather Technologies -- http://www.bluefeathertech.com ARS KC7GR (Formerly WD6EOS) since 12-77 -- kyrrin(a)bluefeathertech.com "I'll get a life when someone demonstrates that it would be superior to what I have now..." (Taki Kogoma, aka Gym Z. Quirk)

23 years, 2 months

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OT: SC/SC couplers available (was: Re: 10Base-FL)

by pete＠dunnington.u-net.com

On Feb 9, 9:52, Adrien Farkas wrote: > _these_ 'simplex' aren't really simples, they're duplex, but connected > not side by side, but opposite, which makes a need to cut all my sc > cables into two simplex, which I'd like to avoid. I called it 'simplex', > because I wasn't able to describe it properly. Oh, I see. Yes, hard to describe concisely, I suppose they're a sort of "dual simplex" ;-) > hmm, i might to move to STs, but ut's fddi cabling systems and all my > cards are either SC or MIC (FDDI), so I might need bunch of ST cables > and pigtails. sure, ebay is my friend, but you know, shipping this stuff > to europe is quite expensive ;) and I have lots of fddi & sc cables > already, just missing some stuff to connect it together, this is wher > the couplers come. The fibre in my house and workshop is 50/125 FDDI stuff recovered from work. We don't use FDDI any more so I liberated several 10-metre and 20-metre patch cables, cut off the MICs, and re-terminated them with STs. The tools and materials I needed to do that cost about ?100 from TechOptics (luckily, I could borrow a microscope, so I didn't have to buy that) and it's not hard to do. TechOptics don't have prices on their website but they're much cheaper than most catalogues, and quite helpful on the phone. http://www.techoptics.com It took two evenings to reterminate 4 cables, both ends. One evening to strip, wait an hour to let them rest, then crimp and epoxy the STs; the second evening to cleave and polish the ends. I kept a few shorter cables that are ST-to-MIC and acquired a few ST-to-SC cables when I got my ATM kit. Even most of my FDDI kit uses ST or SC connectors; the only thing I have with MIC connectors (other than adaptors for SGI FDDI cards) is an ATM-to-FDDI bridge. I've not done it myself, but someone I know has done a lot of splicing with gel-filled splices, which are quite cheap (though you really need a splice box as well). You can get them from TechOptics too. However, if you already have most of the cables you need, and just want a few couplers, just buy the couplers. -- Pete Peter Turnbull Network Manager University of York

23 years, 2 months

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HP-85 stuff posted for auction

by Innfogra＠aol.com

A couple of days ago I posted for auction a bunch of HP-85 stuff. More to come as I find it. Includes ROM pacs, a 128K memory pac and a GP-IO & serial interfaces. http://cgi6.ebay.com/ws/eBayISAPI.dll?ViewSellersOtherItems&include=0& userid=innfosale&sort=3&rows=25&since=-1&rd=1 my seller name is innfosale Thanks for putting up with the post. Paxton Astoria, OR

23 years, 2 months

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Sharp IQ-3000 language translator?

by evan947＠yahoo.com

Hello out there... anybody have data on the Sharp IQ-3000, a language translator gadget from 1980? All I can find is the miniscule reference below. http://sharp-world.com/corporate/info/his/chronology/p6.html

23 years, 2 months

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Odd ideas that I've had lately...

by john_boffemmyer_iv＠boff-net.dhs.org

I was sitting at home reading my latest copy of Mouser (component catalog) and I came across LCD GUI touch screen kits and Zilog Z80 kits with USB, Serial and 100Mbit Ethernet. My head being screwed up from pain killers (on worker's comp from slipping on ice at a client's), tried to put 2+5 together to get 4 and gave me an expensive (maybe not) idea. Palms and Visors and the like are really small and great for many tasks, but what if I could take a similar processor, say a Dragonball, an ARM or the even an older one (maybe even a mobile RISC-based CPU - now that would be cool) and link them into a slightly larger and more useful hand-held that has USB, Serial and Ethernet with AD and DC capabilities and toss it into a steel box with rubber seals and rubber/knurled steel outsides and a thin plastic piece covering the display with a metal lock-back cover. I know there are knock-off covers out there for the Visor and the Palm that are sold separately, but the palm doesn't have built in USB or Ethernet or Serial, you are stuck with a bulky add-on or a cradle. What If someone could get around that? Anyone have some thoughts to it? Next leap into less than sanity... I actually considered sitting down and getting a prototype board from another mail order company the other day to build my own AT P200MMX motherboard with PC100/133 SD-RAM support, AGPx and ISA/PCI. Now here's where the idea for this would require the prototype board: built in USB and Ethernet and possibly SCSI on a standard AT board in as small a size as possible while enabling use of as many slots in the back of an AT case for the AGPx, PCI and ISA. I was thinking of using something like an AMD-based Ethernet chip with the prototype board's VIA motherboard chipset. Anyone have comments? Kind of lame or just expensive and nuts? -John Boffemmyer IV ---------------------------------------- Founder, Lead Writer, Tech Analyst and Web Designer Boff-Net Technologies http://boff-net.dhs.org/index.html ---------------------------------------

23 years, 2 months

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Working pga adapter, monitor and manual

by dan.stanger＠ieee.org

Free for shipping from Denver, CO 80222. One catch, you have to take the 286 computer its in.

23 years, 2 months

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Sierra Adventure Games

by cb＠mythtech.net

>> ... Leisure Suit Larry 1, too. > >Hey! I still have LSL1 1.0 - 5.25" original disks, not a copy (fished it >out of a pile of debris left by a departing college student a number of >years ago) > >It's... um... a *classic*! Ah, but do you have "SoftPorn" the game that LSL-1 was a rip off of? I played that on my Apple II eons ago (I just saw it on one of the game archive links that passed thru this list recently in anyone wanted to DL it) -chris <http://www.mythtech.net>

23 years, 2 months

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OT: SC/SC couplers available (was: Re: 10Base-FL)

by pete＠dunnington.u-net.com

On Feb 7, 13:44, Adrien Farkas wrote: > pete(a)dunnington.u-net.com (pete(a)dunnington.u-net.com) wrote : > > >SMAs suck big time, and couplers for STs are expensive. ^^ Oops, did I really write that? I meant that couplers for SCs are expensive; ST couplers are cheap. > a propos fiber couplers, does anyone have a few they might miss? I'm > after SC/SC couplers preferrably with direct SC duplex connector > pluggable. I might get a few, but those aren't ready for duplex > connectors, just single SC simplex. Duplex ones are just two simplex ones side by side. Use tape or glue. -- Pete Peter Turnbull Network Manager University of York

23 years, 2 months

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CCS 2422 Floppy Disk Controller

by ekklein＠pacbell.net

I recently acquired a California Computer Systems model 2422 Floppy Disk Controller Rev B. (S-100) in what appears to be good condition but missing a 2716 EPROM presumably containing the onboard BIOS. Does anyone have this card and the capability of providing me with a copy of the PROM or at least a dump of it? I'd also love to get my hands on the docs, if available. Thank you, Erik

23 years, 2 months

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Interesting finds

by Fred.van.Kempen＠microwalt.nl

Hi, While hauling some VAX and StorageWorks stuff yesterday, I bumped into a Philips PTS6000 machine (actually, two.. a larger one, and a smaller one), some HP stuff (looks like HP Big Iron) and the cabinet of a DECarray system. Anyone interested? Pics available. --fred

23 years, 2 months

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PS2 Mouse

by teoz＠neo.rr.com

I was wondering if there ever was a PC PS2 type mouse addon card for old 386 or previous AT type computers? I know there were bus mice, but thats not the same. The reason I am asking is because I have a PS2 KVM switch and want to get my 386/DX40 computer connected to it (it doesnt have a ps2 header).

23 years, 2 months

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6502 cycles and subtleties (was Re: Assembly on a Apple IIc+)

by pete＠dunnington.u-net.com

On Feb 9, 10:55, Eric Smith wrote: > > Are you sure? My understanding is that PLP and PLA increment the stack > > pointer *before* fetching the byte off the stack. > [...] > > Maybe you're thinking of PHP and PHA ([SP]:=A; SP:=SP+1), which take one > > cycle less than PLP/PLA? > > You're right, I was confused. Phew! I was beginning to wonder if the 6502 is more bizarre than I already knew :-) You missed the mistake though -- I should have written SP:=SP-1 (no it wasn't a test, I only just noticed). -- Pete Peter Turnbull Network Manager University of York

23 years, 2 months

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6502 cycles and subtleties (was Re: Assembly on a Apple IIc+)

by pete＠dunnington.u-net.com

On Feb 8, 19:02, Eric Smith wrote: > Well, I haven't counted them, but pretty much all instructions that > use the ALU do that. This includes ADC, SBC, ORA, AND, EOR, BIT, > and (when the accumulator is the destination) LSL, ASR, ROR, and ROL. > And the PLP and PLA instructions, which increment the stack pointer > using the ALU during the next fetch. Are you sure? My understanding is that PLP and PLA increment the stack pointer *before* fetching the byte off the stack. The 6502 stack pointer always points to the next free location on the stack. It's possible that it does something like: fetch instruction decode, and set up ALU to generate SP+1 fetch [SP+1] add 1 to SP while fetching next instruction Maybe you're thinking of PHP and PHA ([SP]:=A; SP:=SP+1), which take one cycle less than PLP/PLA? -- Pete Peter Turnbull Network Manager University of York

23 years, 2 months

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PS2 Mouse

by teoz＠neo.rr.com

PS2 works off the keyboard controller, I was hoping somebody might have made a specialty board with keyboard controller allowing older machines to use ps2 hardware ----- Original Message ----- From: +ACI-John Allain+ACI- +ADw-allain+AEA-panix.com+AD4- To: +ADw-cctalk+AEA-classiccmp.org+AD4- Sent: Sunday, February 09, 2003 12:37 PM Subject: Re: PS2 Mouse +AD4- +AD4- I could use a USB +AD0APg- PS/2 mouse adapter, so far I have not +AD4- +AD4- found any such animal. I've found plenty that go the other way. +AD4- +AD4- Think this is one. It isn't a passthru. +AD4- http://www.cyberguys.com/cgi-bin/sgin0101.exe?T1+AD0-131+-0870 +AD4- +AD4- +AD4- On the subject... +AD4- I see a lot of PS/2-female to RS232/D9-male adaptors. +AD4- I assume that these are for signal sensing mice, +AD4- since these adaptors Are passthru, and I get the impression +AD4- from this list that PS/2 signals aren't RS232. +AD4- +AD4- John A.

23 years, 2 months

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PDP11 RSX-11M operating system manual

by anheier＠owt.com

Hi, I have a large binder containing a DEC PDP11 RSX-11M System Generation and Management Guide, version 3.2, June 1979. Also included is a RSX-11M/M-Plus MCR Operation Manual and two bound mini references. All are in excellent shape. Best offer + shipping. Thanks Norm

23 years, 2 months

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Odd ideas that I've had lately...

by cb＠mythtech.net

>I'd hate to >hose the PalmOS flash - dunno if there's a way to get it back without >building your own external re-Flasher (in the case of the IIIs and older >that *have* removable SIMMs). I think they may have an ability to recover built in. I know when I upgraded the OS on my wife's IIIx, I had a problem with the upgrade, and the flash didn't complete. The Palm wouldn't boot and I thought I was hosed. But a check in the directions offered a recover method. There is a sequence of button presses you can do that drops the Palm into "debugger" mode, and from there, the upgrade utility could restart the flash process and write the OS again. Of course, you would need a copy of the Flash ROM/OS and a utility to write it. I know you can dump your current ROM to file with the tools in the Palm Emulator available from Palm... but the only tool I know to write it back to the Palm is their OS upgrade tool, which means you would have to shell out for the upgrade (or find someone else that already did and use the software that they have). -chris <http://www.mythtech.net>

23 years, 2 months

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attache' where are you?

by paulm064＠icqmail.com

I have been searching for info of an old laptop computer i have . Following details are all i have found: Attache' Forefront 286 model : LV-286D power supply : 17Volt ? 2.7Amp ? Battery : 12Volt 2200mAH NiCAD 3 pin connector - 9.8"x2.1"x1.1" Has detachable keyboard. Does any know if manufacturer was taken over by another? Need details of power supply and battery connector pollarity and or gifs of same . Don't know where else to look. Thanks Paul

23 years, 2 months

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6502 cycles and subtleties (was Re: Assembly on a Apple IIc+)

by pete＠dunnington.u-net.com

On Feb 8, 11:41, Eric Smith wrote: > Pete wrote: > > You must be thinking of some different 6502 to the rest of us :-) As > > Sellam said, no 6502 opcode takes less than two clock cycles to > > execute, and most take more (up to 7): the only 2-cycle instructions are > > the ones with implied addressing, like RTS, CLI, TAX, ... > > Not RTS, that takes a bunch. Oops, wrong column! Yes, it takes 6. > There is a little bit of pipelining internally, but it's not really > obvious. The last ALU operation of an instruction is generally done > during the same clock cycle as the fetch of the next instruction. > For instance, when you do an "ADC #35" instruction (add with carry > immediate), it's a two-cycle instruction, but it really takes three > cycles to complete -- the third cycle is overlapped with the following > instruction's fetch. During the first cycle the opcode is fetched, > during the second cycle the immediate operand is fetched, and during the > third cycle, which is the first cycle of the next instruction, the actual > add occurs. True. Most instructions don't work like that, though. > > There aren't two CPU cycles per clock cycle. Perhaps you're thinking of > > the fact that the 6502 uses a two-phase clock, and does part of the CPU > > cycle during phi-1, and part during phi-2? > > Perhaps the original poster thought that, but it's just the old standard > two-phase NMOS logic. It takes two phases to do just about anything > internally, so it's not a matter of doing two things sequentially in > one clock cycle. (A small number of things occur in parallel in some > cycles, though.) Yes, *I* know that, but I don't think Jim did :-) -- Pete Peter Turnbull Network Manager University of York

23 years, 2 months

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ast cc-232 serial card

by n8uhn＠yahoo.com

I am looking for a copy of the manual of jumber/switch settings and pinout's of the ast cc 232 async/sync serial card. looking at the jumper page (after the link was posted) i found nothing. jpg scans to my email would be great - just attach them. n8uhn at yahoo dot com (replace the "'dot" with "." and "at"' with "@" Thanks, Bill

23 years, 2 months

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Assembly on a Apple IIc+

by pete＠dunnington.u-net.com

On Feb 8, 16:12, Jim Keohane wrote: > I'll type more slowly: > > Question #1: > > If an instruction that takes two cpu cycles (as Sellam Ismail cited as a > minimum) and there are 2 cpu cycles per clock cycle then how many clock > cycles did this one instruction take? > > Answer: one. NO. There NOT two CPU cycles per clock cycle. Sellam cited two CLOCK cycles minimum per instruction. He is correct. I've been been building 6502-based devices and programming 6502 code on and off since 1981, and I suspect Sellam has been arund 6502s nearly as long; we're both accustomed to calculating how many cycles routines take. The 6502 uses several clock cycles per CPU cycle -- if by cycle you mean a fetch-execute cycle. That's exactly the opposite of what you're claiming. > OK. OK. I'm being cute. But the 6502, sans Woz's Apple ][ > sneakiness for video, can do two memory fetches per clock cycle. No, it can't. Go read the data sheet. The *system* can, providing your memory is fast enough that you can run it twice as fast as the CPU -- which the Apple and some other machines did -- and providing you have *something else* (eg, the video) doing its memory access only during the clock phase that the 6502 doesn't use for memory access. It is the clock edges that trigger the 6502 to perform the memory access. > Question #2: > > If someone writes "pipelining" and encloses it within quotes does that > indicate to you that the term is being used, well, advisably? > > Answer: Visit groups.google.com and search for "pipelining" and 6502 (or > related processor). [...] > =====excerpt 3======================= > > The 6502 _IS_ pipelined, but in ways that are not very dramatic or even > obvious > unless you look at the CPU's internal operation in detail. Rockwell touted > the > pipelining in their 6502 user's guide years ago, it is essentially this: > > When you do a ADC of something, the last cycle of the instruction is when > the > actual data byte is read in, right? Immediately after that the next opcode > is > read so the next instruction has started, right? So when did the 6502 add? > > It added while the next opcode was being read. The accumulator does not > actually hold the new value until sometime during the second half (forget > exactly where) of the opcode cycle of the next instruction. > > That's pipelining. It saves you a cycle on every instruction that does an > ALU > operation. It may not be as spectacular as what's being done on the monster > RISCs these days but it is essentially pipelining. Yes, but only on a small number of the instructions. I'm sure other microprocessors of the day did that, Rockwell marketing not withstanding. > I'd say you got me on the "one cycle per instruction" but you jumped the > gun on the pipelining issue. OK? Well, maybe, but the 6502 is not basically a pipelined processor, in the sense that only a few instructions do anything close to pipelining, and not even all the intructions that use the ALU do so. -- Pete Peter Turnbull Network Manager University of York

23 years, 2 months

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PACEMIPPS?

by rigdonj＠cfl.rr.com

Can anyone tell me exactly what a PACEMIPS PIMM - 33SG144C is? It's made by Performance Semiconductor but it's not listed on their (POOR!) website. I THINK it might be an R33000 embedded processor but I'm not sure. Joe

23 years, 2 months

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Micom 2000 ?

by rigdonj＠cfl.rr.com

Lawrence, I found an old message from you in the CC archives while I was searching for info on the Micom 2000. In the message you said that you have a Micom 2000. Can you tell me what kind of disks it uses? I know that they're hard sectored 8" SSDD floppies but I don't know how many sectors they use. I picked up a case of sealed boxs of 8" floppy disks today at a hamfest and the case and boxs say that they're for the Micom 2000. Joe

23 years, 2 months

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CCS 2422 Floppy Disk Controller

by classiccmp＠vintage-computer.com

I recently acquired a California Computer Systems model 2422 Floppy Disk Controller Rev B. (S-100) in what appears to be good condition but missing a 2716 EPROM presumably containing the onboard BIOS. Does anyone have this card and the capability of providing me with a copy of the PROM or at least a dump of it? I'd also love to get my hands on the docs, if available. Thank you, Erik **Resent from the proper account**

23 years, 2 months

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WANTED: RA7x Enclosure/Operator Ctrl. Panel

by jwillis＠arielusa.com

As I understand it, the drives won't spin up without the panel. I currently have full technical documentation for pretty much every DEC hard drive EXCEPT the RA70. One of my bosses was a field service engineer for DEC for 15 years, and the other worked for 22 years as the senior district representative for New Mexico, West Texas, Colorado, Utah, Arizona, and Nevada and was a storage subsystems specialist. They both agree that you need the control panel. They also both agree that I'm nuts for caring. -----Original Message----- From: Ethan Dicks Sent: Sat 2/8/2003 7:21 AM To: cctalk(a)classiccmp.org Cc: Subject: Re: WANTED: RA7x Enclosure/Operator Ctrl. Panel --- John Willis <jwillis(a)arielusa.com> wrote: > Wanted: RA7x Enclosure/Operator Ctrl. Panel Are these things common/rare? Absolutely required or are they just very nice to have? I have a couple of RA70 drives I got in a box with some KDA50s. Was going to put them in my BA123 with a KA630 processor. Haven't had the chance - still using a pair of RD54s. So... has anyone tried to put RA7X drives in a CPU (not disk) enclosure? If I'm hosed, then I guess I'm in the market for a drive enclosure, too (unless there's some way to hack up an old AT-style tower case...) -ethan [demime 1.01a removed an attachment of type application/ms-tnef which had a name of winmail.dat]

23 years, 2 months

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TTY ASR-33 Platen?

by grg＠umn.edu

I have been blessed with *two* Teletype ASR-33's. Apart from a minor cleaning, they are going to be just fine. EXCEPT the rubber platens are as hard as Chinese arithmetic! In case you havent experienced this, if the platen gets hard, the printer doesnt print well-- the typehead kinda bounces off the paper and doesnt leave a clean dark mark. I've tried the usual remedies-- acetone cleans them up, but they're still rock hard. I need some suggestions! Should I try ArmorAll (known to soften rubber, given time), "Platen cleaner", "belt dressing", "french dressing", or what? Note that I don't need to clean or make it "grippier", it needs to be softened, a lot. Regards, George

23 years, 2 months

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MicroVAX 3800 Power Cable

by pete＠dunnington.u-net.com

On Feb 7, 23:21, Tony Duell wrote: > > On Feb 6, 22:33, Tony Duell wrote: > > > > > I don't see how you can do a proper test without a visual inspection > > of > > > the connections... And I've yet to see a moulded connector that > > provides > > > a proper strain-relief for the cable. > > > > A good PAT tester will check at a sensible current (though admittedly a > > lot only check earth continuity at a proper current). As for strain > > I've never met a PAT tester that tests the current-carrying conductors at > a significant current, mainly because there's no easy way to do this > without dismantling the unit under test (if the cable is fixed) -- the > maximum current you could pass would be the normal operating current of > the unit (by simply applying mains to it), which is not enough. Even then > you couldn't measure the voltage drop across one of the conductors. A proper PAT tester to current standards has a socket for each end of an IEC cable, and each cable is supposed to be individually tested with both ends plugged in to the tester. > > releif, well you're not supposed to swing the equipment by the power > > cable, Tony! > > True, but equally I don't expect the outer covering of the cable to pull > out of the moulded connector in normal use exposing the single-insulated > wires inside. Which has happened to many moulded cables round here. I've only seen one do that -- and it was an instant candidate for the wirecutters at both ends. A proper visual inspection is supposed to be the first part of the PAT. > I assume you'd fail a rewirable plug with the cord grip missing/not used > on an electrical safety test. I certainly would. Yes. The first thing I do with any multiblock is take it apart to see how the ends are wired -- the cheap ones are usually in a condition where I feel compelled to re-do the job. -- Pete Peter Turnbull Network Manager University of York

23 years, 2 months

2
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Tandy 1400 HD

by debann17＠yahoo.com

My uncle is lettingme re-set up his old tandy 1400 hd. The battery and everythign appears to be working fine. However, MS-Dos is not loading from the harddrive or from disk. Any suggestions on what cold be wrong? Thank you debann17

23 years, 2 months

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Kaypro II available.

by aje＠technet2000.com.au

I have two Kaypro II that I have owned from new. Both are upgraded to run at higher clock speeds and one has a cooling fan fitted. One has the PC8 ROM There is a complete set of the bundled distribution software (Select, Perfect Writer etc) with manuals, including that really first class ground breaking program SBasic, and other programs that I wrote in SBasic including multi variable non linear regression analysis. Also Unidos and etc which allows the floppy drives to emulate those of other machines. I used one of these machines to run the first simulation of the CSIRO Sydney to Melbourne high speed railway. What price might one expect for such a a machine?. Alan Emmerson Brisbane QLD Australia

23 years, 2 months

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Grundy Newbrain fix

by toring＠inet.uni2.dk

Hi, I have a Grundy Newbrain, which wouldn't start, or if it started it would only show random chars in the display. I've found out what was wrong with the machine and if anyone needs help with fixing his (or hers) machine, I'll be able to point to the problem. As far as I can tell, this is a common problem with all these machines, and it only gets worse as time goes by. Regards, Torben Ring

23 years, 2 months

2
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Qube

by Tcampbelluk＠aol.com

Just read some interesting articles of nostalgia on the Warner Qube site on Yahoo while researching for an article I'm doing over here (England). I was the first President of Warner Qube system in Pittsburgh which was the first fully blown QUBE system after the Columbus, and what an experience. I then went on to Milwaukee and Brooklyn,Queens. If I can find any of my old info and if you are interested I will dig it out. ( I went on to help develop 2 of the largest U.K. cable/telephone systems for Comcast as Managing Director of Birmingham England Cable and Comcast Teesside (England). In each case we supplied cable and telephony service to more resident than the normal provider (British Telecoms) Hope this may be of help, if only historically. Ted Campbell

23 years, 2 months

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Looking for source of MFM or RLL drives

by kelly＠catcorner.org

Yes, the OS allows entering of drive geometry. Actually only supports MFM up to 70Meg. RLL drives will of course work, just not to RLL capacity. I'm looking for the largest drives I can find. From: Ethan Dicks --- Kelly Leavitt <CCTalk(a)catcorner.org> wrote: > Any good sources of MFM or RLL drives. This would be for a Tandy 6000 > running Xenix. > > I'm looking for 70 Meg or higher MFM (110 RLL capacity). Hmm... those aren't so common (in the DEC world, there are two choices - the RD53 (Miniscribe 1325) and the RD54 (Maxtor XT2190). I take it you aren't constrained by a narrow set of expected geometries? (i.e. - you have a running system and/or the install procedure asks you about the drive rather than assuming?) -ethan

23 years, 2 months

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10Base-FL

by pete＠dunnington.u-net.com

On Feb 5, 5:38, vance(a)neurotica.com wrote: > I'm about to put some 10Base-FL in and I was wondering if someone could > tell me what kind of fiber I should be looking for? Is it 50/125 MMF like > GigE? Or is it 62.5/125 MMF like FDDI? It will work fine with either. In theory, you get slightly higher coupling losses with 50/125 but can run slightly longer lengths; in practice it makes little difference. My advice is to stick to one kind or the other for everything. York Uni has always used 50/125 for everything (from the original FDDI and FOIRL through ATM and now 100baseFX and 1000baseSX) -- and we're smiling now that it's come back into vogue. BTW, stick to ST connectors where you can. SMAs suck big time, and couplers for STs are expensive. -- Pete Peter Turnbull Network Manager University of York

23 years, 2 months

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