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

by waltje＠pdp11.nl

Hi all, I found three interesting bits of stuff today: 1. HeathkitH-8 2. Tandy Color Computer 3 3. Instructigraph code/teletype practice set with practice tapes, keys and (tube) amp There's also a cute Tandy 200-in-one Electronics Lab kit, thats way cool :) I am cleaning out someone's garage for them, and would probably want to sell the above items to get them some money. Any interest here, or should I go ePay ? Cheers, Fred

21 years, 8 months

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Article on data rot on CD's

by cb＠mythtech.net

>Some of the CD longevity articles talk about this... those safes >are rated to preserve paper. The char or combustion temperature for >paper is far higher than the highest temperature that a CD-R >will survive. True, I hadn't thought about that angle of it. I suppose a CD or disk will warp enough to ruin it long before paper starts to show signs of heat damage. Its still going to be better then keeping important media in a cardboard box. -chris <http://www.mythtech.net>

21 years, 8 months

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OT: Simple electronics question...

by woyciesjes＠sbcglobal.net

I do realize that this doesn't really apply here, but I know some of the electronic geniuses here can help me out... I have a little Timex clock radio. Works great, except when I want to fall asleep to the radio, I need to turn it down so as not to disturb my wife. Problem is, that the volume control isn't sensitive enough at the low volume I want. So, my thought is to put a resistor on the positive lead of the speaker, which (I think) would lower the overall volume output, and give me a wider range to adjust the volume to a quiet level. I'm just not sure what size resistor to use, or if that is even the right way to go. I haven't cracked it open yet, but I'm fairly certain it's only a single speaker in there, and it's probably a 16 ohm one at that. Am I on the right track? -- --- Dave Woyciesjes --- ICQ# 905818

21 years, 8 months

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Fw: OT stupid Welsh and Americans (was Re: Cirris 1000)

by geoffreythomas＠onetel.com

This one got lost too . What's going on ? ----- Original Message ----- From: "Geoffrey Thomas" <geoffreythomas(a)onetel.com> To: "Joe R." <rigdonj(a)cfl.rr.com> Sent: Wednesday, August 04, 2004 12:59 AM Subject: Re: OT stupid Welsh and Americans (was Re: Cirris 1000) > > >But our comrade Joe is using a purely perjorative term from the English > > >colonial past. > > > > I might be classified as a lot of things but Comrade is definitely not > > one of them! Where the hell did that come from anyway? > > It's meant to be irony.

21 years, 8 months

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rarest computers

by RMaxwell＠atlantissi.com

> On Tue, 3 Aug 2004, Bill Sudbrink wrote: > > > Well, I have a pretty big stack of Ohio Scientific... hardware, > > software, documentation and advertising. I never thought it was > > that rare, but then Sellam told me that he has a very hard time > > turning up OSI stuff, so maybe it's a little rare. > > To which Sellam Ismail replied: > > OSI stuff has traditionally been hard to turn up (for me at least). It > took several years of collecting before I got my first OSI system. Now I > have a few various models, all given to me by various people ironically. > > Bob Maxwell had the coolest and rarest OSI computer at VCF East: a model > 300 (OSI's first kit?) > Alas, it's not mine. Jim Kearney brought it VCF East to supplement my OSI Superboard display. The 300 is a sobering reminder of how a computer company could start in those early days with hobbyist-grade products. I don't think Michael Dell could have ever sold any PCs with hand-taped circuit board artwork... Bob

21 years, 8 months

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Fw: OT stupid Welsh and Americans (was Re: Cirris 1000)

by geoffreythomas＠onetel.com

This message got lost , here it is again. It wasn't censored was it ? ----- Original Message ----- From: "Geoffrey Thomas" <geoffreythomas(a)onetel.com> To: "Joe R." <rigdonj(a)cfl.rr.com> Sent: Tuesday, August 03, 2004 12:42 PM Subject: Re: OT stupid Welsh and Americans (was Re: Cirris 1000) > > ----- Original Message ----- > From: "Joe R." <rigdonj(a)cfl.rr.com> > To: "Geoffrey Thomas" <geoffreythomas(a)onetel.com>; "General Discussion: > On-Topic and Off-Topic Posts" <cctalk(a)classiccmp.org> > Sent: Tuesday, August 03, 2004 12:01 AM > Subject: Re: OT stupid Welsh and Americans (was Re: Cirris 1000) > > > > Considering the English colonial past, the English don't have the right > > to complain about anything! Not only see Opium wars, see black slavery > > (who do you think shipped the slaves to America and the Caribeaan in > > exchange for sugar and rum?), Irish potato famine, Endentured Servitude > > (another word for slavery), debitor's prison, scalp bounties (both in > North > > American and for Australian Aborigines), press gangs (ship's crews). Then > > go see American Revolution! > > > > Now do you REALLY want to get into a debate about English colonial > past???? > > > > My 2 cents worth, > > Joe > > I'm not English , I'm Welsh - hence my objection to your use of the term in > an offensive (to me ) manner. > You don't need to tell me about the English colonial past - the Welsh have > been on the wrong end of it - hence the large migration to the USA to get > away from them . Hence also the large no. of signatories on the declaration > of independence who are of Welsh descent. > > Geoff. >

21 years, 8 months

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FA: DEC cards, VME card and PC/104 card

by rigdonj＠cfl.rr.com

It's piling up faster than I can get rid of it but I finally got around to putting some more stuff on E-bay. There is a Motorola MVME 167 Single Board Computer card, a Diamond Systems PC/104 Single Board Computer card with DAQ and some DEC cards including a GPIB interface, 11/23+ CPU and a DSD disk drive interface on See <http://cgi6.ebay.com/ws/eBayISAPI.dll?ViewSellersOtherItems&userid=rigdonj>. Joe

21 years, 8 months

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Why do MRV11-D's crap out?

by RMaxwell＠atlantissi.com

A little clarification of Dwight's comment on EPROM life expectancy: The 10-year spec is for the half-life of the charge on the floating gate of the EPROM. In other words, after 10 years, you can expect half a programmed gate's charge to have dissipated. This, by no means, renders the data unreadable: a smaller fraction of the charge is sufficient for the EPROM circuitry to read a programmed cell (most algorithms do a 2x to 4x overprogrammming once a cell reads back programmed). The programmed/unprogrammed read threshold is also temperature sensitive, so cooling off a warm part may allow data recovery from an EPROM that's fading away. Also, bear in mind the specifications are for worst case: the charge leaks away fastest as the device sits near its maximum rated temperature (people have erased EPROMs by heating them over a light bulb!). The cooler the chip, the less leakage. The relationship between temperature and leakage is exponential, too: a few degrees make a lot of difference. If Ed's 2764As were running hot, the gates might have lost enough charge in 15-20 years to forget a few bits... This helps explain why all the EPROMs I programmed in 1985 are still intact. They're backed up on floppy... which decays faster? Bob > -----Original Message----- > > Ed>The set of MXV11-B2 boot ROMs I have are 2764A's. > Ed>Do these die after awhile? > Ed>Just sitting here scratching my head. > Dwight> Most EPROMs are rated for 10 years. That doesn't mean that Dwight> every one will last that long. Also, many of these types Dwight> of systems were all made with EPROMs from the same lot. Dwight> If there was a long term issue, they'd all fail.

21 years, 8 months

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rarest computers.

by fm.arnold＠gmx.net

cctech-request(a)classiccmp.org schrieb am 04.08.2004: >Message: 17 >Date: Mon, 2 Aug 2004 10:53:15 -0700 (PDT) >From: "Dwight K. Elvey" <dwight.elvey(a)amd.com> >Subject: rarest computers. was: RE: Xerox Alto Restoration + Emulation > > >Hi > I was just wondering. What people on this list consider their >rarest computers in their collections. > >Dwight Hi, My rarest computer is a Nokia Mikko-1. Made by Nokia of Finland in the second half of the seventies. (The g.o.days N. still was a decent company). This computer was build as a 4 bit slice on one 4" x 9" pcb, so there were 8, 12, 16 and even 20 bit versions of it. The instructionset was microprogrammed on another control-pcb, and since different departments at Nokia had different opinions on what was a suitable instructionset, there were at least 4 different instructionsets simultanousley in continuous devellopment. It was programmed in assembler only, whith some cross-compiler running on a PDP8-E with a RF32 attached. It was using Intel 1103 RAM and 1602 ROM or 1702 Eprom. Several thousands were manufactured and used in many different industrial aplications, and as embedded systems in the NOP30 time-shareing terminal or LP4900 multi-channel analyser. I have no idea how many there are still alive, I have 2 systems, and will put some photo's on-line sometime next week. Anyone else has such a beast or its successor Mikko-2? (mainley used in banking applications). Frank

21 years, 8 months

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HP 7980 tape drive

by vax3900＠yahoo.com

Saw one today. They ask $69 plus tax. vax, 3900 __________________________________ Do you Yahoo!? New and Improved Yahoo! Mail - Send 10MB messages! http://promotions.yahoo.com/new_mail

21 years, 8 months

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Zilog Z8038 Z-FIO document available

by aek＠spies.com

> Al Kossow might want > it for bitsavers. Oh, There is an Al_Kossow on the list. He must hate me because I snapshot his ebay bid of an 80186 emulator. He got the manual though. -- Would be interested to know when you get it if it was the complete boxed unit. The listing was ambiguous. If it wasn't complete, the manual will be up on bitsavers/microtek in the next week or two.

21 years, 8 months

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TEK UNIX history

by aek＠spies.com

Later, Tek developed a microprocessor development system that utilized an LSI-11 core. It was called the 8250. -- 8550 and 8560 It was an evolultion of the systems that started with the 8002 8550s have an 11/02 in them and ran an OS called DOS-50, which I would REALLY like to find. The 8560s are UTEK machines starting with 11/23s and 8" drives and evolving through 11/73s and 5" drives. I have an 8560 with an 8" drive and would like to find the service manual for it (I have the svc docs for the 5" version). There is a fair amt of scanned documentation on the 8002->8560 up now on bitsavers. And dovetailing into Hans' comments, it is VERY difficult to find the documentation and software for these systems, while the hardware shows up at hamfests and on eBay frequently.

21 years, 8 months

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Tandy 1000 on ebay

by teoz＠neo.rr.com

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=1247&item=5112979548… Is there something rare about a Tandy 1000 TL/2 for pricing to hit $167.50 or more?

21 years, 8 months

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rarest computers

by Adrian＠beovax.co.uk

> -----Original Message----- > From: cctalk-bounces(a)classiccmp.org > [mailto:cctalk-bounces@classiccmp.org] On Behalf Of Vintage > Computer Festival > Sent: 05 August 2004 10:55 > To: General Discussion: On-Topic and Off-Topic Posts > Subject: RE: rarest computers > > I wasn't allowed to take photos, but it looks pretty much > like it did in the late 1960s (with a few scuffs here and > there perhaps). Not allowed to take pictures? Swines. I'd love to see that up close and personal! Cheers w

21 years, 8 months

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Sord M5

by Adrian＠beovax.co.uk

> -----Original Message----- > From: cctalk-bounces(a)classiccmp.org > [mailto:cctalk-bounces@classiccmp.org] On Behalf Of Dave Brown > Sent: 05 August 2004 10:51 > To: General Discussion: On-Topic and Off-Topic Posts > Subject: Re: Sord M5 > > Whether the 'briefcase' held an audio cassette as well I'm > not sure-it would have been a tight squeeze. Be interested in > tracking down samples of software for it. A single basic cart > is rather boring! You haven't seen the rest of the software yet :) Lack of software is one of the things that killed off the M5's chances, along with the Texet TX8000 (amongst other names) and Mattel Aquarius, though let's be honest the Aquarius was never going to set the world on fire was it :) Cheers -- adrian/witchy owner & curator, Binary Dinosaurs - the UK's biggest online home computer collection? www.binarydinosaurs.co.uk - the Museum www.snakebiteandblack.co.uk - former gothic shenanigans www.aaghverts.co.uk - the place to whinge at adverts!

21 years, 8 months

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Sord M5

by Adrian＠beovax.co.uk

> -----Original Message----- > From: cctalk-bounces(a)classiccmp.org > [mailto:cctalk-bounces@classiccmp.org] On Behalf Of Dave Brown > Sent: 05 August 2004 09:35 > To: General Discussion: On-Topic and Off-Topic Posts > Subject: Sord M5 > > > Anyone else have one of these? Seems to need a cartridge to > run. I have a basic language cartridge for it- (labelled > Falcon) and a Sord Basic G cart manual. So I'm looking for > any info, software, other carts, etc. If anyone's interested, > there's pix of the M5 on a few web sites and summary data as well. I've got the european version which was badged by CGL and made in a blue case instead of brown. You need either the BASIC-I (integer) or BASIC-G (graphics) cart before you can do anything else. I've only got a small amount of s/w for it though, maybe 3 tapes and a single lonely 'tank battle' cart that was given to me at the Classic Gaming Expo the other week. http://www.binarydinosaurs.co.uk/Museum/Sord/sord.php Cheers -- adrian/witchy owner & curator, Binary Dinosaurs - the UK's biggest online home computer collection? www.binarydinosaurs.co.uk - the Museum www.snakebiteandblack.co.uk - former gothic shenanigans www.aaghverts.co.uk - the place to whinge at adverts!

21 years, 8 months

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z8000 segment scheme question

by dwight.elvey＠amd.com

Hi If you guys are intending to build a Z8000 machine to run CP/M-8000, you should let me know. There are a couple hardware restrictions you should know about early on. Dwight >From: "Kane, David (DPS)" <David.Kane(a)aph.gov.au> > >The Z8000 segmented address scheme has two forms. The long form that you >described uses two 16 bit values (registers or memory locations). The >short form uses a single 16 bit value with the 7 bit segment number in >bits 9-15 and an 8 bit offset into the segment in bits 1-8. Bit 16 of >the first 16 bit value is a flag which indicates long or short segment >address. This is important for memory addresses operands as the CPU can >get an address word operand from memory, and then based on the flag bit >can decide if the next word must be read to get the complete long >address. In either case the segment address is located in the same place >in either a short segment address or the first word of a long segmented >address. > >David > >> -----Original Message----- >> From: cctalk-bounces(a)classiccmp.org >> [mailto:cctalk-bounces@classiccmp.org] On Behalf Of SHAUN RIPLEY >> Sent: Monday, 26 July 2004 1:27 PM >> To: cctalk(a)classiccmp.org >> Subject: z8000 segment scheme question >> >> >> I picked up one of my computer books today and read >> that z8000 uses one 16 bit register to hold the 7 bit >> segment number and one register to hold the 16 bit >> offset. The strange thing is that the segment number >> is hold in position of bit 9-14 other than the bottom >> half of the first register. I goggled and found >> complaint about this scheme but no one explained why >> it was designed so. Could somebody on the list tell me why? >> >> >> >> __________________________________ >> Do you Yahoo!? >> Yahoo! Mail - 50x more storage than other providers! >http://promotions.yahoo.com/new_mail > >

21 years, 8 months

2
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Contact cleaner/lubricant?

by wh.sudbrink＠verizon.net

Jay West wrote: > If you're dealing with gold contacts.... Nope :-( The OSI fatherboard pins and the card connectors are silver(tin?) with nylon. But, Caig makes DeoxIT too, so that's a "sort of" vote in favor of it. Thanks, Bill

21 years, 8 months

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Metal Case Northstar Horizon

by Adrian＠beovax.co.uk

> -----Original Message----- > From: cctalk-bounces(a)classiccmp.org > [mailto:cctalk-bounces@classiccmp.org] On Behalf Of Marvin Johnston > Sent: 05 August 2004 17:08 > To: General(a)dmzms01.aramiska.net; On-Topic and Off-Topic Posts > Subject: Re: Metal Case Northstar Horizon > > > > Actually, it would be nice to have pictures of all three > Northstar chassis styles. Right now, mine are all buried and > I won't get a chance to get near them for another month or > so. But I'll keep my eyes open for one of the beige ones now :). I'm back at bletchley at the weekend so I'll do some proper pictures; I'm sure there's more than one 'cos I remember seeing a box for them (WOW*RARE*L@@K BOXED!!!11) In common with pretty much all of the stuff in 'storage' they're not in the best condition, principally down to where they're being stored :-\ Cheers -- adrian/witchy owner & curator, Binary Dinosaurs - the UK's biggest online home computer collection? www.binarydinosaurs.co.uk - the Museum www.snakebiteandblack.co.uk - former gothic shenanigans www.aaghverts.co.uk - the place to whinge at adverts!

21 years, 8 months

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Gaps in the collection

by Adrian＠beovax.co.uk

> -----Original Message----- > From: cctalk-bounces(a)classiccmp.org > [mailto:cctalk-bounces@classiccmp.org] On Behalf Of lists(a)microvax.org > Sent: 05 August 2004 10:09 > To: cctalk(a)classiccmp.org > Subject: RE: Gaps in the collection > > > > I fact let's start a thread of what items people feel are > missing from > > their collections, Here's mine... (No, I am not asking for > any of these...) > > I would kill for a VAX 6000 in the UK. Mmmmm... *dribble* :D I walk past a 6000-410 every time I go upstairs here, and there's a 7000 just round the corner in stores. They're both backup machines for a customer though so you can't have 'em. > I'm still a student though, so i've not got a permanent base > to keep one at. And I thought a uV-II in a BA123 was a > bastard to heft around every end-of-academic-year... BA23 is the way forward, though still bloody heavy. Cheers -- adrian/witchy owner & curator, Binary Dinosaurs - the UK's biggest online home computer collection? www.binarydinosaurs.co.uk - the Museum www.snakebiteandblack.co.uk - former gothic shenanigans www.aaghverts.co.uk - the place to whinge at adverts!

21 years, 8 months

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Metal Case Northstar Horizon

by Adrian＠beovax.co.uk

> On Wed, 4 Aug 2004, Marvin Johnston wrote: > > > Someone mentioned some time ago a metal case instead of the > standard > > case for the Northstar Horizon. Can anyone confirm if they > did put out > > a computer in a metal case, and if so, (wishful thinking) how many > > they might have produced? I have one here in a powder blue > metal case There's at least one of the metal cased ones in 'storage' at Bletchley Park - IMSAI blue with an (I assume) aluminium front, 2 vertical floppy drives etc. Got a pic somewhere if anyone's interested, I can't attach it to this mail 'cos the list software will bin it. Cheers -- adrian/witchy owner & curator, Binary Dinosaurs - the UK's biggest online home computer collection? www.binarydinosaurs.co.uk - the Museum www.snakebiteandblack.co.uk - former gothic shenanigans www.aaghverts.co.uk - the place to whinge at adverts!

21 years, 8 months

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rarest computers

by sloboyko＠yahoo.com

Not "really" meant to be a computer, but I have a working HP2644A (with DC100a tapes) that uses an 8008 microprocessor (the first thing HP made with an "outside" CPU, I think). I went nuts on it and rebuilt the moldy CRT. The only other one I know of is at the Univ of Stuttgart museum. You can hack this terminal into playing pong on the 8008. Classic computers need classic peripherals - that's why I've been working on paper tape readers. ===== -Steve Loboyko Incredible wisdom actually found in a commerical fortune cookie: "When small men cast long shadows, then it is very late in the day." Website: http://juliepalooza.8m.com/sl __________________________________ Do you Yahoo!? New and Improved Yahoo! Mail - Send 10MB messages! http://promotions.yahoo.com/new_mail

21 years, 8 months

3
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cctalk Digest, Vol 12, Issue 11

by mtapley＠swri.edu

At 21:01 -0500 8/3/04, William Donzelli <aw288(a)osfn.org> wrote: >Look at your machines as individuals. Where did you get each one? What >were they used for? Do you have evidence to back up the claims? Got a NeXT Cube from Whitelight systems in Palo Alto, CA. They were a NeXT software developer. I still have the company label on the monitor (which has a fault which I'll need to fix eventually) to show that. The disk was scrubbed, though. Unfortunately, that's about as good as it gets in my collection. -- - Mark 210-522-6025, page 888-733-0967

21 years, 8 months

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Gaps in the collection

by Adrian＠beovax.co.uk

> -----Original Message----- > From: cctalk-bounces(a)classiccmp.org > [mailto:cctalk-bounces@classiccmp.org] On Behalf Of lists(a)microvax.org > Sent: 05 August 2004 14:09 > To: General Discussion: On-Topic and Off-Topic Posts > Subject: RE: Gaps in the collection > > > 7000 just round the corner in stores. They're both backup > machines for > > a customer though so you can't have 'em. > > Bastard. Dibs! ;) You're in the queue after me :) > I was just chatting to Greg this morning about swapping my > worldbox for a BA23. Sad to see it go because it's so pretty > and noisy, but I can rack a BA23 and get some work out of it. Why not get one of the VAXstations he got from Jules? Do you have a requirement for a QBUS box or summat? Cheers a/w

21 years, 8 months

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Article on data rot on CD's

by cb＠mythtech.net

>in a >fire-safe case (yes, I realize it wouldn't help except in >the lightest fire) Depending on the case/safe/cabinet, it may actually help quite a bit. They are generally rated to 1200 degrees or higher for 45 minutes or longer. If you have a 1200 degree fire for 45 minutes, then your house is a total loss. A fully involved room doesn't usually get to 1200 degrees (flashover will usually happen around 600-750 degrees depending on air and flamability of the items in the room). However, many MANY people make the mistake of putting their fire resistant safe in an upstairs bedroom for easy access. That will likely cause a failure much sooner then its fire rating. Why? Because as the structure burns, the floor weakens, and now you have a 100+ pound weight sitting on a burned, water soaked, weak floor. It tends to break thru the floor, and not stop falling until it hits the basement two stories down. Usually the impact will make the casing of the safe fail and either pop the door open, or totally destroy the outer shell. In either case, the fire rating has been removed, and the contents will now happily burn. Are these types of boxes/safes the best option? No, but they are better then using a rubbermaid container or a regular file cabinet. For truely important paperwork, a safe deposit box is probably the best option (although they are very rarely fire rated at all, but the safes always have fire suppression systems in them, and seal air tight, so the odds of a fire getting very large is pretty slim). -chris <http://www.mythtech.net>

21 years, 8 months

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Zilog Z8038 Z-FIO document available

by David.Kane＠aph.gov.au

> ..I remember that somebody on the list tried to make a collection of zilog chip documents. That might be Joe R. (looking at old messages), or Al Kossow might want it for bitsavers. Any chance the book has details on the Z-ASCC? David

21 years, 8 months

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rarest computers

by Adrian＠beovax.co.uk

> -----Original Message----- > From: cctalk-bounces(a)classiccmp.org > [mailto:cctalk-bounces@classiccmp.org] On Behalf Of Vintage > Computer Festival > Sent: 04 August 2004 19:23 > To: General Discussion: On-Topic and Off-Topic Posts > Subject: RE: rarest computers > > rush for a Computer History Museum event, but I think it > boiled down to dirty contacts on everything. I unseated and > re-seated all the modules and it finally came up. There I did all that before I discovered it was an NTSC box :) Didn't have any compatible display device at the time so it went back in its box.... > BTW, when I was in Japan at the National Science Museum, they > had on loan the original "Brown Box" prototype of the > Odyssey. They actually had it turned on and connected to a > television, and it was still working! Brilliant! Do you know if there are any pictures of that? I've seen original 1960s photos of the brown box but a current one would be excellent. Cheers -- adrian/witchy owner & curator, Binary Dinosaurs - the UK's biggest online home computer collection? www.binarydinosaurs.co.uk - the Museum www.snakebiteandblack.co.uk - former gothic shenanigans www.aaghverts.co.uk - the place to whinge at adverts!

21 years, 8 months

2
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Gaps in the collection

by lists＠microvax.org

> I fact let's start a thread of what items people feel are missing from > their collections, Here's mine... (No, I am not asking for any of these...) I would kill for a VAX 6000 in the UK. Mmmmm... *dribble* I'm still a student though, so i've not got a permanent base to keep one at. And I thought a uV-II in a BA123 was a bastard to heft around every end-of-academic-year... alex/melt

21 years, 8 months

1
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looking for tek manuals

by jwest＠classiccmp.org

Anyone have installation and service manuals for the following in electronic format? Tektronix 455 S/N: B055329 Tektronix 465 S/N: B306547 Thanks in advance! Jay West

21 years, 8 months

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2
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bah! (spam)

by Innfogra＠aol.com

I get no spam on this email list. Best run list I have ever seen. I use this email address only for this list. Actually that is not entirely true. Usually I get about one spam a week but lately there have been none. I don't think spam comes through this list. Paxton Astoria, OR

21 years, 8 months

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bah! (spam)

by waltje＠pdp11.nl

Hiyall, Bah.. where's spam when ya need it. Waiting for some to arrive to test the new antispam stuff... I have been getting a growing number of spam messages through this address, which is only used for this list, so there have to be spam-harvesters out there. Jay, could you enable a monthly (or longer) "please verify your address" email system where address get dropped off the list of they dont reply, meaning, a human is using it? Thanks, Fred -- Fred N. van Kempen, DEC (Digital Equipment Corporation) Collector/Archivist Visit the VAXlab Project at http://VAXlab.pdp11.nl/ Visit the Archives at http://www.pdp11.nl/ Email: waltje(a)pdp11.nl BUSSUM, THE NETHERLANDS / Mountain View, CA, USA

21 years, 8 months

2
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Metal Case Northstar Horizon

by marvin＠rain.org

Someone mentioned some time ago a metal case instead of the standard case for the Northstar Horizon. Can anyone confirm if they did put out a computer in a metal case, and if so, (wishful thinking) how many they might have produced? I have one here in a powder blue metal case similar in color to the IMSAI, but I thought it was something someone just put together. I talked to the person a few days ago that I got it from, and he couldn't remember any details except that it came from a swap meet many years ago.

21 years, 8 months

6
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First computer with real-time clock?

by msokolov＠ivan.Harhan.ORG

Vintage Computer Festival <vcf(a)siconic.com> wrote: > > If you mean a clock that maintains time when power is off or gets the time > > by radio then we are probably into the micro era. > > Yes. > > But I can't imagine there was not a real-time clock (i.e. as described > above) as at least an option for an earlier computer system. VAX Architecture Reference Manual requires every VAX to have one, and they all indeed do starting with the 11/780. Was the 780 introduced in 1978 or 1979? In any case it was designed in the late 1970s. MS

21 years, 8 months

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Metal Case Northstar Horizon

by dwight.elvey＠amd.com

Hi I have one that is in a beige metal case. Yes, they did do metal case ones. These are not as desired as the wood ones but more practical. Dwight >From: "Marvin Johnston" <marvin(a)rain.org> > > >Someone mentioned some time ago a metal case instead of the standard >case for the Northstar Horizon. Can anyone confirm if they did put out a >computer in a metal case, and if so, (wishful thinking) how many they >might have produced? I have one here in a powder blue metal case similar >in color to the IMSAI, but I thought it was something someone just put >together. I talked to the person a few days ago that I got it from, and >he couldn't remember any details except that it came from a swap meet >many years ago. >

21 years, 8 months

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rarest computers

by mross666＠hotmail.com

Date: Mon, 2 Aug 2004 10:53:15 -0700 (PDT) From: "Dwight K. Elvey" <dwight.elvey(a)amd.com> Subject: rarest computers. was: RE: Xerox Alto Restoration + Emulation >>From: "Vintage Computer Festival" <vcf(a)siconic.com> >> >>They have a *very* well done restoration page. Cool project! However, I >>don't believe their claim to have the only original Alto left in existence >>is accurate. Al Kossow would certainly beg to differ... he has some, I believe, and knows others who do. >Hi >I was just wondering. What people on this list consider their >rarest computers in their collections. Here is my list Oooooooh a liststorm coming! First, define 'rare'... I would say, less than 10 machines known to exist, as an arbitrary figure. OK, here's the Corestore contribution: Two pdp-12s (not 'rare' by above definition, but rareish and very much in demand) Three pdp-10s (a KS (not very rare), a KL 1091 (rare), and a KL 2065 (rare) Two pdp-15s (I know of one other in UK, 4 others in USA) An IBM 1800 (unique, as far as I know) Two IBM System/32s (again unique - know of no others in collections) A Thinking Machines CM-2a (very few other CMs around, but my -2a is unique AFAIK) I'd like to add an IBM System/360 Model 40 to the list, but it *still* isn't here... negotiating! Any of these systems folks wouldn't consider 'rare'? Curious... What rare machine do I covet most? A System/360 Model 30. KA or KI pdp-10 a close second. Web pages: http://www.corestore.org/12.htm (no page for 2nd pdp-12 yet) http://www.corestore.org/15-1.htm http://www.corestore.org/15-2.htm http://www.corestore.org/dec20.htm http://www.corestore.org/dec10.htm http://www.corestore.org/2065move.htm (no proper page yet) http://www.corestore.org/1800-2.htm http://www.corestore.org/32.htm (no page for 2nd System/32 yet) http://www.corestore.org/cm2a.htm Mike http://www.corestore.org

21 years, 8 months

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Metal Case Northstar Horizon

by melamy＠earthlink.net

they indeed produced both a beige and blue metal case. I have one of each as well as a wooden one. I iwll have to dig into my issues of Byte to check into N* ads for more info when I get back to Seattle again. best regards, Steve Thatcher -----Original Message----- From: Marvin Johnston <marvin(a)rain.org> Sent: Aug 4, 2004 5:47 PM To: ClassicCmp <cctalk(a)classiccmp.org> Subject: Metal Case Northstar Horizon Someone mentioned some time ago a metal case instead of the standard case for the Northstar Horizon. Can anyone confirm if they did put out a computer in a metal case, and if so, (wishful thinking) how many they might have produced? I have one here in a powder blue metal case similar in color to the IMSAI, but I thought it was something someone just put together. I talked to the person a few days ago that I got it from, and he couldn't remember any details except that it came from a swap meet many years ago.

21 years, 8 months

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seeking info on ASR-33 interface board

by brian＠quarterbyte.com

Hi Y'all, I just popped open an ASR-33 I picked up a few weeks ago. The tty ran OK in local mode in the store where I found it but in shipment to me something happened, it now free runs (runs free?). Maybe it's a loose connector. In the electronics bay on the right hand side, there's a printed circuit board that runs from front to back. It's definitely a power supply, and probably also an RS-232 to current loop converter. In front is the line/off/local switch, and in back are several large Molex connectors. I was surprised to see this printed on the circuit board: MITS INC TELETYPE INTERFACE BOARD REVISION 0 COPY RIGHT 1976 Does anybody know if this the Altair MITS? The date seems about right. Was it common to produce custom internals like this for teletypes? Anybody have the schematics for this board? Thanks, Brian =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- _| _| _| Brian Knittel _| _| _| Quarterbyte Systems, Inc. _| _| _| Tel: 1-510-559-7930 _| _| _| Fax: 1-510-525-6889 _| _| _| Email: brian(a)quarterbyte.com _| _| _| http://www.quarterbyte.com

21 years, 8 months

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Vector Flashwriter

by gtulloch＠shaw.ca

Hey all: I'm fixing up a Vector Graphic MZ machine and have a problem with the Flashwriter II - all that comes up on the terminal is garbage when I boot the machine. Someone has the Flashwriter (1!) card on sale on eBay, anyone know where I might find docs for this thing? I need to compare them to the Flashwriter II to see if the Mindless Terminal changed between versions or if the older board will work on the newer "terminal". Anyone know of any docs (they're not on the Harte collection, alas) out there? Or any ideas if this will work? Thanks! Regards, Gord

21 years, 8 months

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Contact cleaner/lubricant?

by dwight.elvey＠amd.com

>From: "Bill Sudbrink" <wh.sudbrink(a)verizon.net> > >While watching me struggle with the cards in my OSI C4P, >someone at VCF East (I can't remember who, sorry if it >was you) suggested a product (I can't remember what, I >was a bit distracted) that they used to clean and lubricate >contacts. I just did a little googling and there seem to >be two "major" products: Stabilant 22 and DeoxIT. Anyone >care to share their experiences with either of these or make >another recommendation? > >Thanks, >Bill > Hi Bill I've only had experience with DeoxIT. It seems to work well but before these products were around, I used DC #4 ( Dowe Corning ) silicon grease and also an automotive product called SilGlyde. You shouldn't use ordinary lubricating grease because these have too high of a film strength. The silicon grease used for heat sinks is not good either because of the filler ( white stuff ). Any of these will work miracles. I use this type of product on most card edges and ROM sockets. I've even been know to use it on boards with all socketed parts. If you look back in the archieves you'll see that I've talked about this stuff before. Dwight

21 years, 8 months

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rarest computers. was: RE: Xerox Alto Restoration + Emulation

by aek＠spies.com

>They have a *very* well done restoration page. Cool project! However, I >don't believe their claim to have the only original Alto left in existence >is accurate. At the time the page was created, no other Alto I's were known to exist. Since that time, two are known to still exist in PARC storage, and one is at the CHM. The Alto I in that picture is now back in the Bay Area also. It was one of mine at one point. -- > I was just wondering. What people on this list consider their > rarest computers in their collections. MIT CADR PARC Dorado PARC Dicentra National IMP-16P

21 years, 8 months

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unidentified HP loader rom

by jwest＠classiccmp.org

What's 1816-0769? The image is on Al's site, but can't find it referenced in my docs. Anyone know offhand? Jay --- [This E-mail scanned for viruses by Declude Virus]

21 years, 8 months

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VCM

by dwight.elvey＠amd.com

>From: "Marvin Johnston" <marvin(a)rain.org> > >Since I will be leaving for Europe (Hungary/Czech Republic) in several >weeks, the stuff I have listed on VCM will be expiring on 8/12. It would >be nice to see more names listing things too :). > Hi Marvin How long do you expect to be gone? I was thinking about making a weekend trip down to Santa Barbara sometime later this summer to look at the Polymorphic items you have. Dwight

21 years, 8 months

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VCM

by marvin＠rain.org

Since I will be leaving for Europe (Hungary/Czech Republic) in several weeks, the stuff I have listed on VCM will be expiring on 8/12. It would be nice to see more names listing things too :).

21 years, 8 months

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rarest computers

by Adrian＠beovax.co.uk

> -----Original Message----- > From: cctalk-bounces(a)classiccmp.org > [mailto:cctalk-bounces@classiccmp.org] On Behalf Of Vintage > Computer Festival > Sent: 03 August 2004 18:20 > To: General Discussion: On-Topic and Off-Topic Posts > Subject: Re: rarest computers > > > I have one of these, but I'm missing most of the overlays. Also the > > rifle for some of the games is long since trashed. Some day > I'll dig > > the thing out and see if the system itself still works. > > I got one of mine working recently. It was pretty cool to > see it actually work for the first time. Nice! Mine's NTSC and I need to build a game cable so I can plug it into the tv card in my peecee. Wouldn't surprise me if it was dead. It's been disassembled here: http://www.binarydinosaurs.co.uk/Museum/Magnavox/odyssey.php 'all' that circuitry can generate is 2 player objects, a ball object and optionally a net object down the middle. Top stuff! Cheers -- adrian/witchy owner & curator, Binary Dinosaurs - the UK's biggest online home computer collection? www.binarydinosaurs.co.uk - the Museum www.snakebiteandblack.co.uk - former gothic shenanigans www.aaghverts.co.uk - the place to whinge at adverts!

21 years, 8 months

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Article on data rot on CD's

by jfoust＠threedee.com

I recently tried reading some CDs burned in 1998 or so, on a nice SCSI Sony burner of the time, on Taiyo Yuden media, kept in sleeves with no label or Sharpie, in a fire-safe case (yes, I realize it wouldn't help except in the lightest fire) in an A/C office environment. One of five had an error. On the other hand, I probably didn't check the original for read errors after I made it. - John

21 years, 8 months

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May mailing list change?

by jfoust＠threedee.com

I noticed that my CC-talk and CC-tech mailings stopped in early May. I re-subscribed today. Was there a known glitch? - John

21 years, 8 months

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rarest computers. was: RE: Xerox Alto Restoration + Emulation

by JMeyer101＠aol.com

The rarest computer I now have is a working MCS Intellec 4. I also have a GRiD Compass II 1137 (not as rare as the Intellec but there are not many of the 1137's out there). Jeff Meyer

21 years, 8 months

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SIMH on Slashdot

by rcini＠optonline.net

In case anyone hasn't seen the Slashdot article on SIMH, here's the link. About midway down is my little blurb on the Altair32 project. Right now at 2 ( Informative)...hoping to hit 5. http://it.slashdot.org/article.pl?sid=04/08/04/146202&tid=137&tid=190&tid=1… Rich

21 years, 8 months

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seeking info on ASR-33 interface board

by dwight.elvey＠amd.com

Hi One of the things I've seen that is most of these machines seem to lack lubrication. These things need lots of oil. If you've no run it for a month or two, you'll most likely need to quirt some oil in it. The other thing is if they are run for some time, they need to be cleaned. This means partial disassembly and dunking in solvent ( a large sonic cleaner system is best but one of those automotive part cleaning trays with the pump works well ). There are a lot of moving parts and they all rub against something. Anyway, for the original problem, check the coupling between the printer unit and the keyboard. The "H" coupling piece often pops off. This will cause the machine to not lockup when in the local mode. That board is most likely a RS232 interface card. Maybe some pictures would be good. Dwight >From: "Brian Knittel" <brian(a)quarterbyte.com> > >Hi Y'all, > >I just popped open an ASR-33 I picked up a few weeks ago. The tty ran >OK in local mode in the store where I found it but in shipment to me >something happened, it now free runs (runs free?). Maybe it's a loose >connector. > >In the electronics bay on the right hand side, there's a printed >circuit board that runs from front to back. It's definitely a power >supply, and probably also an RS-232 to current loop converter. In >front is the line/off/local switch, and in back are several large >Molex connectors. I was surprised to see this printed on the circuit >board: > >MITS INC >TELETYPE INTERFACE BOARD >REVISION 0 >COPY RIGHT 1976 > >Does anybody know if this the Altair MITS? The date seems about >right. > >Was it common to produce custom internals like this for teletypes? > >Anybody have the schematics for this board? > >Thanks, >Brian > >=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- >_| _| _| Brian Knittel >_| _| _| Quarterbyte Systems, Inc. >_| _| _| Tel: 1-510-559-7930 >_| _| _| Fax: 1-510-525-6889 >_| _| _| Email: brian(a)quarterbyte.com >_| _| _| http://www.quarterbyte.com > >

21 years, 8 months

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Signetics kit available in the UK

by Adrian＠beovax.co.uk

Folks, Had this mail in from a bloke who has a Signetics development to (I assume) give away; reply to him direct as usual. Cheers w > > Geoff Baxendale (thebears(a)sarno.freeserve.co.uk) on July > > 29th, 2004 at 10:47PM (BST). > > > > Hi Adrian, > > > > > > > > I have a Signetics 2560 development system complte with 8" > > floppies VDU and printer. Any interest? Enjoyed you site,

21 years, 8 months

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