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

VCF East 1.0 - July 28/29 in Marlborough, Massachusetts!

by vcf＠siconic.com

It's finally official! VCF East 1.0 July 28-29, 2001 10am to 5pm daily Best Western Royal Plaza Hotel and Trade Center Marlborough, Massachusetts Admission $10 daily at the door Speakers Want to give a talk at VCF East 1.0? E-mail me at <sellam(a)vintage.org>. Exhibitors Sign-up your exhibit at http://www.vintage.org/2001/east/exhibit.php3 Vendors Want to sell vintage computer stuff at VCF East 1.0? Contact me at <vendor(a)vintage.org>. More info to come soon, including updated VCF East 1.0 web pages with speaker schedule, exhibits and more! Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------------ International Man of Intrigue and Danger http://www.vintage.org

25 years, 3 months

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Docs for DRV-11?

by GOOI＠oce.nl

Hi Chuck. Some weeks ago David has set up a website with some scan of PDP Field Maintenance Print Sets. On of them is the DRV-11 FMPS MP00054. It is one of the smaller files with its 3.6 Mb ;-) [600 dpi fine quality scans] The link is: http://www.mainecoon.com/classiccmp suc6, Henk Gooijen, PDP-11 collector Sneak-peek of retro-computing: http://home.12move.nl/~sh416008 -----Original Message----- > From: Chuck McManis [mailto:cmcmanis@mcmanis.com] > Sent: vrijdag 11 mei 2001 1:41 > To: classiccmp(a)classiccmp.org > Subject: Docs for DRV-11? > > Does anyone have docs on a DRV-11? (16 bit Parallel I/O). I > bought one on > Ebay (perhaps it will help in my quest to kludge a cheap SCSI > controller > for Q-bus vaxen :-) and now I need some docs for it... I'll check the > handbook when I get home too. > --Chuck

25 years, 3 months

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ECL Logic - not ten yeas old?

by mcguire＠neurotica.com

On May 10, ajp166 wrote: > If memory serves the infamous Cray YMP was > majorly ECL for speed. Lots of Cray processors were/are ECL. The Cray-1 family were all ECL...as were all the X/MP and YMP (YMP proper, not just YMP architecture, some of which are CMOS) machines. More modern smaller Cray PVP machines (J90, etc) are CMOS, while the bigger ones are ECL. -Dave McGuire

25 years, 3 months

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Mechanical analog computer history

by mranalog＠home.com

Hi all, In my continuing effort to keep the discussion from becoming too digital, I want to point out a wonderful article I just found. This article cover the history of mechanical analog computers in general and specifically the mechanical analog fire control computers developed by the Ford Instruments Company >from it's founding in 1915 up to the dawn of electronic analog computing in the 1940s. Beware the PDF is 2.6 MB. "The Mechanical Analog Computers of Hannibal Ford and William Newell" by A.Ben Clymer, IEEE Annals of the History of Computing, Vol 15, No. 2, 1993 http://web.mit.edu/STS.035/www/PDFs/Newell.pdf And my Ford Instruments page is at: http://www.best.com/~dcoward/analog/fordsperry.htm Regards, --Doug ========================================= Doug Coward @ home in Poulsbo, WA Analog Computer Online Museum and History Center http://www.best.com/~dcoward/analog =========================================

25 years, 3 months

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MicroVMS 4.5 distro available

by cmcmanis＠mcmanis.com

I have what purports to be a MicroVMS 4.5 distribution tape. (on a TK50 natch) If you want it, it will cost you $4.00 in postage to get it to you. Send me an email off list. This could be useful for a MicroVAX I I suspect. On an unrelated note I found the install notes for the Ultrix distribution I found and it's targed to a MicroVAX 3500/3600. The release is 2.2-1 with an upgrade to 2.3 --Chuck

25 years, 3 months

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Mechanical analog computer history...Heathkit

by mranalog＠home.com

On Wed, 9 May 2001, John wrote: > Doug...? Sorry, I'm on digest. On Wed, 9 May 2001, Bruce Ray wrote: > ...and who has information on that wonderfully-nostalgic ol' > Heathkit analog computer that existed in the '60s?? I could probably answer most questions. I have two EC-1s. > It was the EC-1 that I was thinking of, and was hundreds of dollars in the > '60s as I recall. Any cover-page art scanned for that to take me back a few > decades..? I have both manuals for EC-1 on CD. I could send you a scan of the cover from both manuals, but there is not a picture of the computer on the covers. The EC-1 first appeared in the 1960 catalog. Unfortunity, I can seem to find any of Heath catalogs after 1959. On Wed, 9 May 2001, ip500 wrote: > The Heath ANALOG COMPUTER model ES-400 circa 1957] The Heath Electronic Analog Computer (ES-400 is the model number of just the cabinet kit) was advertised in their catalogs >from 1956 to 1959. I have about half of the kit manuals for this computer, and no computer. On Wed, 9 May 2001, Bruce Ray wrote: > I'll ask, John; what -is- the *exact* Heathkit part number for the EC-1 > computer assembly and user manuals? When contacting Heath manual replacement service, you just need the kit model number. Regards, --Doug ========================================= Doug Coward @ home in Poulsbo, WA Analog Computer Online Museum and History Center http://www.best.com/~dcoward/analog =========================================

25 years, 3 months

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ECL Logic - not ten yeas old?

by ajp166＠bellatlantic.net

It is indeed old. Another source of ECL (ECL10K) was RP04/5/6 disks that are definately over 10 years old and I have a bunch of 10113, 10120, 10125 and the venerable 11c90 and 95h90 divide by 10 ECL counters from the early 70s (spares for my yasu 355 350mhz frequency counter). The common voltage used was -5.2 though there were -3.2 and +2 and the other was -2 and +3.2 so the transistion voltages were near or around 0V. If memory serves the infamous Cray YMP was majorly ECL for speed. Allison

25 years, 3 months

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Classic Computer website

by chomko＠greenbelt.com

I was looking over the classiccmp website at: http://www.blinkenlights.com/classiccmp/faq.txt There is reference to a website at: http://haliotis.bothell.washington.edu/classiccmp This site is inactive or otherwise not reachable. Has it moved? Eric

25 years, 3 months

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Wanted to trade a VAX 4000/200 system for a KA694 cpu

by cmcmanis＠mcmanis.com

I have a VAX 4000/200 in a very unusual rack mount BA400 series cabinet. The drives point out the front and the cards mount in the back. I do not have the 'slides' for this chassis. I would be willing to trade it for KA694 (VAX 4000/705A) CPU module. The 4000/200 includes a TK70 and a RF72 disk I believe. It takes BA400 type disk/tape cards. It has 32MB of RAM and a CXY08 async mux card. I'll pay to ship it to you on a pallet if you live near one of Forward Air's terminals. Yes, I know KA694s are sold by resellers for a lot of money, and no I don't hold out a lot of hope that someone will be interested in trading one single card for a complete system, however I had to ask. The alternative is to start selling VAXen on Ebay until I've made enough to pay for a 694. :-) [The astute will wonder how many VAXen that will take, I don't know but we just might find out...] --Chuck

25 years, 3 months

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National Semi 32000 ICs available

by ken＠seefried.com

I've recently come into a cache of National Semiconductor 32000 series ICs that I would be willing to part with for someone who is repairing something vintage that uses them. Contact me with what you can use and what you will use it for. The part #s are: ns32301 ns32302 ns32303 ns32081 ns16032 ns32008 ns16082 ns32082 ns32332 ns32382 BTW: If anyone has any ns32000 stuff they want to get rid of, I'd like to hear about it. Especially 32532 CPUs and 32381 FPUs. Ken Seefried, CISSP

25 years, 3 months

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ECL Logic - not ten yeas old?

by truthanl＠oclc.org

http://www.semtech.com/pdf/ate/ecl_dc_specs.pdf Its rather new High speed low noise logic. Sincerely Larry Truthan truthanl(a)oclc.org classiccmp-digest subscriber faster to respond directly to email.

25 years, 3 months

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Converting TTL monitor to Analog

by Robert_Feldman＠jdedwards.com

The Osborne 1 also used TTL-level signals for its video. -----Original Message----- From: Jeff Hellige [mailto:jhellige@earthlink.net] Sent: Thursday, May 10, 2001 3:36 PM To: classiccmp(a)classiccmp.org Subject: Re: Converting TTL monitor to Analog <snip> Looking at to references I have here, I see two monitors right off the bat that take a TTL signal as input: both the Tandy CM-1 and VM-1 monitors, not to mention the current crop of DVI LCD's out there. Jeff -- Collector of Classic Microcomputers and Video Game Systems: Home of the TRS-80 Model 2000 FAQ File http://www.geocities.com/siliconvalley/lakes/6757

25 years, 3 months

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ECL Logic - not ten yeas old?

by ajp166＠bellatlantic.net

What? ECL is one of the oldest logic families with ECL 1000 dating back to the 60s! I know I still have some of the old moto ECL parts. The VAX9000 (over 10 years old) was built with ECL 100k. Ove the years the threshold levels have changed some but the basic logic has been the same save for the really big thing... it's still one of the fastest. Allison ------Original Message------ From: "Truthan,Larry" <truthanl(a)oclc.org> To: "'pechter(a)bg-tc-ppp1580.monmouth.com'" <pechter(a)bg-tc-ppp1580.monmouth.com> Sent: May 10, 2001 1:12:38 PM GMT Subject: ECL Logic - not ten yeas old? http://www.semtech.com/pdf/ate/ecl_dc_specs.pdf Its rather new High speed low noise logic. Sincerely Larry Truthan truthanl(a)oclc.org classiccmp-digest subscriber faster to respond directly to email.

25 years, 3 months

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Computer recycling

by mmcfadden＠cmh.edu

I just saw this article about computer recycling it talks about the options, seems mainly to concern PC's. Nothing about collecting or reusing, more like grind-them-up. http://news.cnet.com/news/0-1006-201-5787986-0.html?tag=tp_pr Mike mmcfadden(a)cmh.edu

25 years, 3 months

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System 36 Rescue?

by ncherry＠home.com

Tom Owad wrote: > > >No manuals, remember this is an IBM mini/mainframe system. > > That's why manuals would be so helpful. :-) > > >You'll need the OS and what not. I'll drag it over in the morning. > > Ok. Thanks. Let me know when might suit you for pick-up. Sorry for all the delay but someone picked up the system before I could get to it. I'm sorry to have gotten hopes up. I did try to move it the day before it disappeared but it is very heavy. If it's anything like it cousin, the AS/400, then it probably had battery backup built in. -- Linux Home Automation Neil Cherry ncherry(a)home.net http://members.home.net/ncherry (Text only) http://meltingpot.fortunecity.com/lightsey/52 (Graphics) http://linuxha.sourceforge.net/ (SourceForge)

25 years, 3 months

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how do I get an SE/30?

by philcarole＠acenet.net.au

Can you Tell me where to get an SE/30? >From Tom Reply to tomhotdog(a)hotmail.com

25 years, 3 months

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ECL Logic - not ten yeas old?

by Lee.Davison＠merlincommunications.com

Its rather new High speed low noise logic. Sincerely Larry Truthan truthanl(a)oclc.org classiccmp-digest subscriber faster to respond directly to email. ECL isn't, I have some data books from 1974. Lee. ---------------------------------------------------------------------------- ---- This email is intended only for the above named addressee(s). The information contained in this email may contain information which is confidential. The views expressed in this email are personal to the sender and do not in any way reflect the views of the company. If you have received this email and you are not a named addressee please delete it from your system and contact Merlin Communications International IT Department on +44 20 7344 5888. ________________________________________________________________________ This message has been checked for all known viruses, by Star Internet, delivered through the MessageLabs Virus Control Centre. For further information visit: http://www.star.net.uk/stats.asp

25 years, 3 months

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SoCal auction madness, free stuff, more

by mikeford＠socal.rr.com

Very little is left, and the rolloff dumpster is 3/4 full. Surprizingly digging in the last couple of pallets this morning turned out, well. We found a cache of brand new in the box Grid stuff, looks like maybe 6 brand new tablets and some misc. Unfortunately this was also mostly a day of dumping stuff. I tried to keep ahead of the dumping crew, but lots of stuff like new old stock HP keyboards (like the workstations used) were tossed and buried. Around this weekend I will post a wrap up, with details on the Grid's, and kind of a what it was like post. FWIW I will be at the site again for a bit on Thursday morning, but no later than lunch time (thinking 10-12), and if someone really really wants to call me my cell is 714-292-7852.

25 years, 3 months

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Converting TTL monitor to Analog

by Lee.Davison＠merlincommunications.com

> How do you define resolution at the monitor level? I've always been able to > get entirely different resolutions out of monitors, and why would they > disagree? If it's an analogue signal, wouldn't the monitor just sweep along > and project whatever is input? It's defined in lines, i.e. the number of black to white transitions you can draw on a horizontal line before it all becomes a grey blur. If you know the dot pitch for your monitor then it will be about 1/2 that for delta dots or 1/3 that for stripes Multiplied by the tube width. Domestic receivers are rarely better than 450 lines which is why NetTV is so warm and fuzzy. Lee. ---------------------------------------------------------------------------- ---- This email is intended only for the above named addressee(s). The information contained in this email may contain information which is confidential. The views expressed in this email are personal to the sender and do not in any way reflect the views of the company. If you have received this email and you are not a named addressee please delete it from your system and contact Merlin Communications International IT Department on +44 20 7344 5888. ________________________________________________________________________ This message has been checked for all known viruses, by Star Internet, delivered through the MessageLabs Virus Control Centre. For further information visit: http://www.star.net.uk/stats.asp

25 years, 3 months

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Converting TTL monitor to Analog

by jeff.kaneko＠juno.com

On 9 May 2001 15:24:8 +0100 "Iggy Drougge" <optimus(a)canit.se> writes: > OTOH, the Master System had RGB output as well on the DIN-8 "AV > OUT". Or at least it did in Europe. I never knew that. I always assumed the thing could only do composite. Even that though, looked *teriffic* on a Diamond Scan! Jeff ________________________________________________________________ GET INTERNET ACCESS FROM JUNO! Juno offers FREE or PREMIUM Internet access for less! Join Juno today! For your FREE software, visit: http://dl.www.juno.com/get/tagj.

25 years, 3 months

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FW: Rolm Rugged Novas

by acorda＠1bigred.com

It might very well be possible, considering the location of the hamfest, and the fact that I've heard that NASA/Goddard has periodic auctions (although I've yet to find out when and where they are). The unit seems to have been mounted in a 19" rack, since it has a rack faceplate attached with some angle iron... the faceplate has a hole cut in it to fit the front panel of the 1602...definitely not a military configuration. -al- acorda(a)1bigred.com > > > -----Original Message----- > From: Eric Chomko [mailto:chomko@greenbelt.com] > Sent: Wednesday, May 09, 2001 3:09 PM > To: classiccmp(a)classiccmp.org > Subject: Re: FW: Rolm Rugged Novas > > > acorda(a)1bigred.com wrote: > > > Does anyone else on the list have a Rolm besides me? I wonder > > how many are actually in private hands. I have a 1602 that I > > picked up at the Manassas Va. hamfest a couple of years ago. > > The fellow that sold it to me claimed that he bought 2 of 'em > > at a NASA auction, which is believable because it has a couple > > of tags that proclaim it to be part of a "Spacecraft Simulator". > > > > Do you know if it came from the Goddard Spacefilght Center? > I know of a spacecraft simulator (SOCC) that was flown around > on board a modified Boeing jet. I know some folks that worked > on THAT system. Perhaps your box is one of those? > > Eric > <...Text deleted for brevity...>

25 years, 3 months

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Fw: percom board

by r_beaudry＠hotmail.com

Hello all, I was bidding on a Percom S-100 cassette interface on a nameless auction site :-), and I was contacted by someone who wanted to know what my interest in the board was. I replied, and as it turns out, the "someone" was the daughter of Percom's founder! She sent me the message below, detailing some of the history of Percom. Sadly, she has nothing left from the Percom line, and has made a request at the bottom of her message. I have used her name and email with permission. Please contact her directly if you can be of assistance... Rich B. ----- Original Message ----- From: "Margo " <robolady(a)hotmail.com> To: <r_beaudry(a)hotmail.com> Sent: Tuesday, May 08, 2001 04:15 PM Subject: Re: percom board > > Percom was an upstart computer peripherals company, with a brilliant mind behind it. In the right place at the right time. On the cutting edge of the computer hobbiest market of the 1970's. Before the internet, before there was a computer in almost every home and every classroom in America, there were the hobbiest. Garage engineers > Making computer systems from components gathered from here and there. My Dad was one of those engineers, > His name was Harold Mauch and he founded a company known as Percom Data Corporation. > > Percom started in the backroom of our 3 bedroom house in Texas. Dad got tired of working for others and the partnership he had started with 3 buddies wasn't working out. So one day, literally, he decided to break free and market his own ideas himself. His idea was a cassette interface for the hobbiest computer. This was in about 1976. He took out a small ad in Byte magazine and went to work. I remember helping him build PC boards for 50 cents each when I was 12 years old. After awhile the third bedroom wasn't enough space for him so he got a semi large portable building and put it in our backyard. It wasn't long before he had to hire someone to help him and things were going well. In the summer of 1977 My Mother quit her job with Xerox and went to work with my Dad. They were the ideal partnership. He was the brains behind the products, and she was an organizational genius. It wasn't long before they had 3 employees and then a few more. They were growing out of the first building they had rented and needed a new place. They found the perfect shop/office just down the street and moved in. Soon they had 50 employees, engineers, assemblers, office workers etc. Everything a real company has. I remember him telling a story once about how he had walked into the production area one day and it was just humming with activity, this was his dream and he had succeeded. > > The people who worked for Percom in the 1970's were special. They were a family and parties and picnic's were the norm. When I turned 13 they all through me a surprise party. I would hang around in the summers, do some work but mostly bother the employees. Sometimes I would stuff PC boards and clip wires, whatever there was for a 13 year old to do. I really enjoyed the people and the atmosphere. I think everyone who worked there at the time really enjoyed their jobs. > > Soon there were 100 or more people there and they were quickly busting out at the seems. As with any company as it gets larger, there was dissention among the ranks. Engineers were unhappy because they didn't get all the credit for new products, Some took ideas and started their own companies. Some just wanted to break out on their own and do what Dad had done, and be their own boss. But things were changing. New products were being developed and sales were going up. The double density adapter for floppy drives were booming, we no longer sold the old cassette interface product and we were onto bigger and better things- Floppy disk drives. > > I can't tell you the ins and outs of the technical side of the business, for I was just an observer throughout this whole process, but I can tell you business was good. It was at about this time that they made the decision to get a much larger office space. This was the beginning of the end for Percom. They got a huge space and moved in 1981. Because of the new space Percom needed sales desperately. Now the sales were pretty much eaten up by the lease on the building and the salaries of the employees. > Dad needed to do something, so he and mom decided to bring in some investors. The investors came in with their money and their entourage. We began hiring big money executives, sales execs, marketing execs, engineers etc. all making huge salaries. Some even getting hiring bonuses just for coming to work for us. But all of that was okay because we had the investors money to pay them with, and they were going to bring in much more money than they would consume, in theory. > > Work began on a new product, the Hard Drive. This was something new but necessary for Percom to stay competitive. The only problem, no one could get it to work right. So we kept selling Peripherals, Disk drives, Doublers, etc. The new guys knew nothing about the industry, all they knew was how to make money. They had all been pretty successful up until that point, so they must know what they are doing, right? Everyone was working hard to make Percom Bigger and better. All the employees and management were working hard to make this thing work. But something was about to happen > No one could have predicted. > > In August of 1982 Dad found out he had Leukemia, by the end of the month he was dead. As time progressed it became clear that with my Dad's loss Percom had lost it's heart and soul. New products would continue but nothing could keep up with the fat salaries and high rent that Percom had committed itself to. > > Mom quit within a year after Dad's death and so did I. By that time I had graduated High school and had gone to work for Percom full-time in the accounting department. By the mid 80's Percom was gone, but not it's products. I've recently become aware of old Percom products (some in like-new condition) being sold at auction on E-bay. It's always nice to see those products still being used, and I usually try and contact some of the people buying them. > >I Would love to find an OLD CIS30 board or old Byte magazines from 76 or 77. Specifically one issue with a purple(or other pastel, maybe blue) cover, with a large cassette on the cover. This was the first magazine percom ran an ad in. > Well for those of you using this old stuff, Good luck on your projects, You are all made of the same stuff my Dad was made of with those Fertile minds and love of gadgets. > > Margo

25 years, 3 months

3
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9-track questions

by hans＠Huebner.ORG

Hello again, I have two questions regarding 9-track drives: Is the position and type of the BOT mark standardized? I have a few tapes without BOT marker which are refused by my CDC transport, so I guess I'll have to add my own BOT marker. Can one Pertec controller handle multiple tape transports? How are the transports supposed to be connected? Or do I need multiple Pertec controllers if I want to have more than one transport on one machine. Thanks in advance, Hans -- finger hans(a)huebner.org for details

25 years, 3 months

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Here is my intiat program for 82C51 (UART) but it is not working. So need help

by M.Tekeste＠Bradford.ac.uk

#include <conio.h> #include <stdio.h> #include <dos.h> /* Type Definitions */ typedef unsigned char UBYTE; /* Old habbit... */ /* Serial Port Definitions */ #define STATUS 0x308 /* Status Base Address */ #define CONTROL 0x300 /* Control Base Address */ #define TXREG 0x30C /* Transmit Base Address */ #define RXREG 0x304 /* Receive Base Address */ #define TRUE 1 /* Function Prototypes */ void InitUSART(void); /* Initialize USART */ void TxData(UBYTE); /* Transmit Data */ UBYTE RxData(void); /* Receive Data */ /* InitUSART() - Initialize USART to 153600, 8 Data Bits, No Parity, 1 Stop Bit */ void InitUSART(void) { outp(CONTROL, 0x00); outp(CONTROL, 0x00); outp(CONTROL, 0x00); outp(CONTROL, 0x40); // Reset UART outp(CONTROL, 0x4E); // Stop, no parity, 8-bit, %16 baud outp(CONTROL, 0x05); // UART now ready } /* TxData() - Send Data to Serial Port Entry: data = Data to transmit */ void TxData(UBYTE data) { UBYTE x; /* Check for Tx Buffer Empty */ do { x = inp(STATUS); x &= 0x01; } while(x == 0); outp(TXREG, data); /* Send Data */ } /* RxData() - Receive Data from the Serial Port Exit: data = Rx Data byte */ UBYTE RxData(void) { UBYTE x; UBYTE data = 0; while(TRUE) /* Check for Rx Data */ { x = inp(STATUS); x &= 0x02; if(x == 0x02) { data = inp(RXREG); /* Get Data */ break; } /* Optional. Aborts if keypress */ if(kbhit()) /* Abort if Keypress */ { getch(); printf("\n"); break; } } return(data); } void main(void) { UBYTE DSR; InitUSART(); while(TRUE) putch(RxData()); }

25 years, 3 months

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FW: Rolm Rugged Novas

by acorda＠1bigred.com

Does anyone else on the list have a Rolm besides me? I wonder how many are actually in private hands. I have a 1602 that I picked up at the Manassas Va. hamfest a couple of years ago. The fellow that sold it to me claimed that he bought 2 of 'em at a NASA auction, which is believable because it has a couple of tags that proclaim it to be part of a "Spacecraft Simulator". I haven't yet had time to play with it, but I hope to do so sometime this summer. Attaching anything to the mil-spec connectors is going to require a lot of creativity :) -al- acorda(a)1bigred.com > -----Original Message----- > From: Bill Pechter [mailto:pechter@bg-tc-ppp1375.monmouth.com] > Sent: Monday, May 07, 2001 5:30 PM > To: classiccmp(a)classiccmp.org > Subject: Re: Rolm Rugged Novas > > > > G'day DCC/DG lovers - > > > > I have updated the SimuLogics site with some DCC, Rolm and DG/One info. > > (Its a start, anyway.) > > > > www.SimuLogics.com/nostalgia/rolm/rolm.htm > > I know there's lots of those Rolms still in use by the military. > At least they were everywhere when I field serviced Vax systems at Fort > Monmouth (a hotbed of Army software development) in the mid '80's. > > Bill

25 years, 3 months

3
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modern? DEC 8" at TCF

by jeff.kaneko＠juno.com

Sources on the net say this is (part of) an RA-92. On Sat, 5 May 2001 16:38:15 -0400 "John Allain" <allain(a)panix.com> writes: > Anybody want to help me ID this drive? > It appeared to be 8" platter, but new, approx > 9"x7"x18" 20lb? or so, power-ish connector >6 pins > on one end, SCSI-ish on the other, > > with the following >>> DEC <<< #'s: > P/N 70-26850-02 S/N KP04834329 Bearing > P/N 70-27265-01 S/N CX10325134 RevE09 > P/N 70-27492-01 S/N CX10325134 > > It was very light for its size. > > I'm probably going to go back and but 1 tomorrow ($10) > but will get more if people here want. > > I was surprised to see such a large drive since the seller > said he got them new and most nonremoveable drives > made in the last 10 years have been 5.25~3.5 form factor. > > Anyhoo, lemme know if'n you know/want. > > John A. > ________________________________________________________________ GET INTERNET ACCESS FROM JUNO! Juno offers FREE or PREMIUM Internet access for less! Join Juno today! For your FREE software, visit: http://dl.www.juno.com/get/tagj.

25 years, 3 months

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I blew up my IIgs!

by spectre＠stockholm.ptloma.edu

Yes, I really did. Are Apple IIgses that easy to kill? Normally I just keep a single 5.25" drive attached to it, but I needed a 3.5" drive as well today (I'll explain as part of a larger question). So I plugged the 3.5" into the computer, the 5.25" into the 3.5", turned the machine on, it made three loud pops and died. The power light does not come on now and there is no activity from the disk drives. I fortunately do have another IIgs in stock, and was able to swap power supplies so that it boots again (this second is a defective unit I use for spare items). I will say that I wish every power supply were as easy to replace as the IIgses -- it literally just snaps in and out. Now that I have shot an apparently unrepairable PS, or is it?, what did I do wrong so I don't destroy more hardware in the future? Can you really not mix drives? Remember, I'm a C64 freak and I have all kinds of disk drives connected up to my Commodore farm. :-P Now the larger question. This IIgs netboots ProDOS 16 from an SE/30 over AppleTalk, which works quite well. Soon I'll have the IIgs using the SE/30 as a gateway to the apartment network (and shortly thereafter the C128 will join it). I tried to netboot GS/OS on it -- I don't know what version (this is a ROM 03 1MB IIgs). It gives me the nice "Welcome to the IIGS" screen, an AppleShare CDEV? appears lower-left and then disappears, it chugs along some more, and then drops out and puts me back at the AFP client. It then refuses to boot GS/OS at all until I restart the machine. Is this a symptom of something specific? If I just wanted to check if the machine were capbale and properly configured for running GS/OS, how could I do that? And where can I find GS/OS disk images? I looked in ftp://ftp.apple.com/Apple_Support_Area/Apple_Support_Area/Apple_Software_Up… but there doesn't appear to be anything in there(?). Disk Copy-format would be nice, something I can break apart on my Power Mac. Thanks for any suggestions, -- ----------------------------- personal page: http://www.armory.com/~spectre/ -- Cameron Kaiser, Point Loma Nazarene University * ckaiser(a)stockholm.ptloma.edu -- Proponents of other opinions will be merrily beaten to a bloody pulp. ------

25 years, 3 months

5
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PC keyboard to PCjr adapters ...

by mbbrutman＠yahoo.com

I've never seen one of these adapters, but I sure wouldn't mind getting my hands on one. If anybody knows a source for these, please drop me a line ... Mike mbbrutman(a)yahoo.com __________________________________________________ Do You Yahoo!? Yahoo! Auctions - buy the things you want at great prices http://auctions.yahoo.com/

25 years, 3 months

1
0
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Converting TTL monitor to Analog

by jeff.kaneko＠juno.com

On Tue, 8 May 2001 19:27:55 -0400 Jeff Hellige <jhellige(a)earthlink.net> writes: > Most of the early NEC Multisync series (original, II, GS, > plus others) allowed various digital and analog modes to be switch > selectable. They would also sync low enough to be used on various > pre-VGA video adapters. I believe that the original Multsync > included the additional switches to specify the color depth as > described in previous posts here, while later models did not. I > don't recall my GS having them. An excellent monitor > btw...paperwhite grayscale. > One of *my* favorites is the Mitsubishi AUM-1371. Thompson also sold rebadged versions of this model. Not only was this sucker multi-synchronous, but it supported *composite* video as well (worked terriffic with my SEGA Master Sytem game console). Awesome monitor-- it could synch up to just about everything I could throw at it at the time (including a PerSyst BoB-16 video adaptor). Wish I had one today . . . Jeff ________________________________________________________________ GET INTERNET ACCESS FROM JUNO! Juno offers FREE or PREMIUM Internet access for less! Join Juno today! For your FREE software, visit: http://dl.www.juno.com/get/tagj.

25 years, 3 months

2
1
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IBM System/36 5363 Security Issue

by antonio＠ptt.yu

I dont have any idea of that system at all, but have a big problem finding what is what of IC-s from 5363. If you have any information on what that codes on IC-s and discrete components mean, feel free to e-mail me direct. Best Regards, Antonio antonio(a)ptt.yu

25 years, 3 months

2
1
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On topic: VAX graphics board question

by vaxman＠qwest.net

Greetings all, I have a VAXstation 3100/M48 with a rather odd graphics card in it: SCANPROC 8 PLANE 2D Made by digital, same form factor (roughly) as the VS40X, but Ultrix 4.4 doesn't recognize it. VMS 5.? does. Since the goal is to run NetBSD when support for graphics stabilizes (and Ultrix til then), does anyone know what's up with this board? One big LSI logic chip instead of the 10 or so small DEC chips. NOTE: This message cross-posted to classiccmp and port-vax... Please edit your headers (or reply to me personally). Thanks! Clint

25 years, 3 months

4
3
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Need help with retrieving data from a DOS 2.11 formated floppy disk

by guntis＠cyberstate.infi.net

Depends on the machine it was written in. Many machines back then had 720K floppies, which look like 1.44M floppies except for the 'density' hole. The 'old' machine would write the HD floppy in 720K format. The 'new' machine (NT) would sense the density hole and attempt to read the floppy as a 1.44M. If possible, use a 'real' 720K floppy (one without the density hole) to write the data if the drive in the machine is only 720K. That way the new machine will sense that it is a 720K floppy and read it accordingly. You could just tape over the density hole on a HD floppy - just make sure you format it on the 'old' machine before writing to it. Of course, if the old machine can really use the 1.44M floppy then the above won't help much. :-} AFAIK the floppy format has remained relatively stable. At least through NT4 and WIN9x. Guntis. From: jimmy tsai <jtsai(a)vortek.com> I need help to solve a problem. Could anyone lends a hand? The company I work for has a machine that runs on DOS 2.11 There are some data on that machine that we need to retrieve. The information is transfered from that old machine to a 1.44mb floppy. When we put the floppy into our pentium winNT4 computer , we can not read the information on the floppy. The NT os simply says it does not know what format the files are at. Now do I need to install a dos 2.11 or is there anyway around it ? What is the format the dos2.11 writing its files in? Are there any program that reads in that type of format? Does any one here have DOS 2.11 that I can download? Even if I do have DOS 2.11, will I be able to install it or do I need very old hardware as well?

25 years, 3 months

4
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Seriously OT: Firearms (was RE: Interesting show on the Computer Garage)

by SUPRDAVE＠aol.com

Can we get back ON TOPIC and talk old computers, such as how to coax a dead mac portable to power up? I have one and can get a cracking sound out of the speaker but nothing else. -- DB Young Team OS/2 old computers, hot rod pinto and more at: www.nothingtodo.org

25 years, 3 months

7
9
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IBM PC parts

by antonio＠ptt.yu

Since you are all proffesionals (the way you talk about things), looking at me, i should be quiet, but i have a serious question (no flames real problem). What is what in 5363? What that 3+4 digits code mean and do anyone know where to find equivalency tables for that. Like 1582582 == 7400 (wild guess). If anyone have a direct address (www) of a solution, feel free to e-mail me directly (i am rarely online, thunder eaten my modem, working partialy with a relay circuit suplement for electronic hook). I have trashed this box because it was defective already. Best Regards to ALL of you, Antonio antonio(a)ptt.yu

25 years, 3 months

1
0
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Multi-Z80 system design

by mcguire＠neurotica.com

On May 9, Terry Collins wrote: > Are Z80 CTC chips of any use these days? > If so what for? Sure...Z80s and their uspport chips are frighteningly popular in the embedded systems world. "Old" doesn't necessarily mean "useless". If you don't plan to use them for anything, I'd suggest distributing them here on the list or perhaps putting them up on eBay. -Dave McGuire

25 years, 3 months

2
1
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Converting TTL monitor to Analog

by pete＠dunnington.u-net.com

On May 8, 16:22, Cameron Kaiser wrote: > > I believe there was a 9 pin analogue video standard that NEC used at one > > time. It wasn't EGA, though. > > Yes, there was. stockholm's NEC monitor on its console is such a monitor. > It's a regular SVGA monitor in every sense except for the 9-pin connector > -- I have driven it up to 1024x768x256 without difficulty. Definitely not > EGA. :-) Taxan, Eizo and Philips used the same pinout for multisyncs, some of which certainly go up to SVGA resolution. -- Pete Peter Turnbull Network Manager University of York

25 years, 3 months

1
0
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PCjr keyboards

by mbbrutman＠chartermi.net

Oh!! A PCjr question! Oh oh!!! A stock PC keyboard will not hook up to the Jr because the Jr is, well goofy. There is a technical description behind goofy and I can take an hour to paraphrase the technical reference manual, but not right now ... You have three options: [1] Find a real PCjr keyboard, either the original chiclet or the improved keyboard. These show up on (gasp) ebay once in a while, without the rest of the computer. [2] Find a pseudo-real PCjr keyboard - Keytronic made some really nice keyboards and numeric keypads for the PCjr. [3] Find an adapter. Several companies made these, but I think they are very rare. I've never seen one, and I'm sure that not many were sold. Good luck. PCjrs are wonderful little machines. Here is my contribution to classic computing: http://pws.chartermi.net/~mbbrutman/PCjr/ Mike PS: The gun discussion is rediculous. Please stop. Wading through the digest is hard enough. Wading through it when half the messages are about gun control and life vs. death situations is even more difficult. A newsgroup or discussion list probably is not a good place to discuss this, especially a discussion list dedicated to classic computers!

25 years, 3 months

5
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Available: Amiga 1988 DevCon notes + Libraries & Devices RKM

by cmcmanis＠mcmanis.com

For $25 (complete, includes postage in the US) you can own a large binder with the complete notes from the 1988 Amiga Developer's Conference. Plus if you act now :-) you get the 'blue' Libraries & Devices volume of the Rom Kernel manual (the most useful volume) Contact me off list if you want this rare combination of documentation. --Chuck

25 years, 3 months

1
0
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Need help with retrieving data from a DOS 2.11 formated floppy disk

by jtsai＠vortek.com

Hi everyone: I need help to solve a problem. Could anyone lends a hand? The company I work for has a machine that runs on DOS 2.11 There are some data on that machine that we need to retrieve. The information is transfered from that old machine to a 1.44mb floppy. When we put the floppy into our pentium winNT4 computer , we can not read the information on the floppy. The NT os simply says it does not know what format the files are at. Now do I need to install a dos 2.11 or is there anyway around it ? What is the format the dos2.11 writing its files in? Are there any program that reads in that type of format? Does any one here have DOS 2.11 that I can download? Even if I do have DOS 2.11, will I be able to install it or do I need very old hardware as well? Jimmy Tsai SFU engineering 3rd year

25 years, 3 months

11
22
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A good shell for ProDOS

by RCini＠congressfinancial.com

Hello, all: I've got my Diamond TrackStar working well now and have worked out most of the kinks. So, I'm playing around with the supported ProDOS volumes (two 10mb volumes). I'm running ProDOS 1.1.1. I still have to copy either 1.9 or 2.0.3 to the volume from various floppies that I have. Anyway, what's a good shell for ProDOS? I have Sneeze running, but there seems to be a problem with it recognizing the volume (maybe it's an issue with running 1.1.1), so I see no volumes on the screen. Rich

25 years, 3 months

2
1
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Dissed by DSSI

by jeff.kaneko＠juno.com

To everyone who responded: The DSSI adapter has been spoken for. The other adapter was some brand-x thing that I haven't identified yet (I *thought* it was DSSI, but it definitely isnt . . .) Thanks guys! Jeff On Tue, 8 May 2001 11:59:27 -0500 (CDT) Eric Dittman <dittman(a)dittman.net> writes: > > I grabbed a couple of DSSI controllers thinking > > they were SCSI (silly me). Anyone have drives > > for these things smaller than a bar fridge? > > > > Anybody *need* one? > > I could use one, if it is QBUS. > -- > Eric Dittman > dittman(a)dittman.net ________________________________________________________________ GET INTERNET ACCESS FROM JUNO! Juno offers FREE or PREMIUM Internet access for less! Join Juno today! For your FREE software, visit: http://dl.www.juno.com/get/tagj.

25 years, 3 months

1
0
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Multi-Z80 system design

by kebabthesheep＠yahoo.com

Hi all, When going through my stash of older ICs, I identified about four complete Z80 chipsets, and well as many perhipheral devices. For some pervese idea I have decided it would be fun to get back into hardware and software co-design. I intend to construct a multi-z80 machine, based upon a plane backplane, identical cpu cards, and perhipheral cards. I will also design an RTOS for this or port a unix. I have most of the information I require, except for data on the Z80 DMA and CTC. The only files I can find on the web are a two page summary from Zilog, and a large and very broken datasheet from Farnell. Does anybody have any (digital) copies of the datasheets I could copy? I'll tease for now, until I have made a few more design decisions, and decided exactly how I intend to pull this stunt off. Details to follow - should be loads of fun :) Many thanks, Dave. ____________________________________________________________ Do You Yahoo!? Get your free @yahoo.co.uk address at http://mail.yahoo.co.uk or your free @yahoo.ie address at http://mail.yahoo.ie

25 years, 3 months

3
2
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Dissed by DSSI

by jeff.kaneko＠juno.com

On Tue, 8 May 2001 13:36:36 -0400 (EDT) Dave McGuire <mcguire(a)neurotica.com> writes: > On May 8, Jeffrey l Kaneko wrote: > > I grabbed a couple of DSSI controllers thinking > > they were SCSI (silly me). Anyone have drives > > for these things smaller than a bar fridge? > > I think you're confusing DSSI with SDI. I've never seen a DSSI > drive larger than 5.25" FH. Ah yes, you are correct. The thing that struck me about SDI was the *square* coaxial wiring they used. Wierd. I've seen alot of SDI's (mostly in little pieces), but never a DSSI (I just made some wild assumptions about DEC hardware :^). Jeff ________________________________________________________________ GET INTERNET ACCESS FROM JUNO! Juno offers FREE or PREMIUM Internet access for less! Join Juno today! For your FREE software, visit: http://dl.www.juno.com/get/tagj.

25 years, 3 months

1
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"Extra ultra density"? (was: RX50 Replacement

by jeff.kaneko＠juno.com

On Tue, 8 May 2001 12:22:30 -0700 (PDT) "Fred Cisin (XenoSoft)" <cisin(a)xenosoft.com> writes: > Intertec (Superbrain) called their format "QUAD density" when they > went to double sided on their MFM 48 tpi. > So, then when they came out with a 2 sided MFM 96 tpi format (720K), > since they had used up the name QUAD, they called it "SUPER density", > which they abbreviated "SD"! Smoke Signal Broadcasting used to refer to this as 'Octo-density'. Jeff > ________________________________________________________________ GET INTERNET ACCESS FROM JUNO! Juno offers FREE or PREMIUM Internet access for less! Join Juno today! For your FREE software, visit: http://dl.www.juno.com/get/tagj.

25 years, 3 months

1
0
0 0

Mac Portable (Was Re: Seriously OT: Firearms)

by pete＠dunnington.u-net.com

On May 8, 0:25, Mike Ford wrote: > >Mike, are these the same batteries used in the Mac Plus? I can't seem to > >find any equivalent over here. > > Nope, the plus uses something different a PX-21 4.5v alkline (longer than > a AA as I remember) Yes, longer and fatter. > The Battery Company in the UK I am told carries them, but it appears to be > used in some cameras as well, so maybe some larger camera shops would also > have them. Thanks! I'll give that a try. -- Pete Peter Turnbull Network Manager University of York

25 years, 3 months

1
0
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Interesting show on the Computer Garage

by halarewich＠look.ca

Hello all: Last night, tuesday I was waching Undercurrants on CBC Newsworld (canadian brodcasting company 24 hr news station ) When I saw a story about the Compiter Garage in Beverton Oregon, USA very informative segment kudos to the proprietor (can't remember name right now) thanx Chris -- # Netscape POP3 State File # This is a generated file! Do not edit.

25 years, 3 months

35
81
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RX50 Replacement

by dittman＠dittman.net

I have a Pro380 and I'm having trouble finding floppies to use with it. Does anyone know of a source for cheap 5.25" DSDD floppies (I doubt DSQD are available any more)? -- Eric Dittman dittman(a)dittman.net

25 years, 3 months

7
8
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How many transistors in the 6502 processor?

by ajp166＠bellatlantic.net

From: Brian Chase <bdc(a)world.std.com> >Does anyone know how many transistors made up the 6502? These days with >Intel's boasting of the number of transistors their latest processors use, >it'd be interesting to know what we used to get by using. What, it can't >have been more than a few thousand, right? Memory says it was one of the lower transistor count cpus, very efficient design. >And then it'd be rather fun to implement your very own 6502 using 74* >series logic chips. I'd bet it would be fairly high chip count. IT would be interesting to see how fast you cound make it go. Allison

25 years, 3 months

9
16
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Dissed by DSSI

by mcguire＠neurotica.com

On May 8, Jeffrey l Kaneko wrote: > I grabbed a couple of DSSI controllers thinking > they were SCSI (silly me). Anyone have drives > for these things smaller than a bar fridge? I think you're confusing DSSI with SDI. I've never seen a DSSI drive larger than 5.25" FH. -Dave McGuire

25 years, 3 months

1
0
0 0

Computers as weapons

by Robert_Feldman＠jdedwards.com

On May 7, 15:26, James B. DiGriz wrote: > Trying to get in something at least a little on-topic, I've heard of > people being killed accidently by industrial robots and such, or the > prospect of the imminent demise of hospital patients due to script > kiddies screwing around with medical records databases or life support > equipment, but does anyone know of an instance where a computer was used > to kill someone? Including military or intelligence cases? My favorite software disclaimer is with Windows95 (the original is in all caps). I wonder if the text is from Sun or Microsoft?: "Note on Java support. The software may contain support for programs written in Java. Java technology is not fault tolerant and is not designed, manufactured, or intended for use or resale as on-line control equipment in hazardous environments requiring fail-safe performance, such as in the operation of nuclear facilities, aircraft navigation or communication systems, air traffic control, direct life support machines, or weapons systems, in which the failure of Java technology could lead directly to death, personal injury, or severe physical or environmental damage."

25 years, 3 months

5
5
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Dissed by DSSI

by jeff.kaneko＠juno.com

I grabbed a couple of DSSI controllers thinking they were SCSI (silly me). Anyone have drives for these things smaller than a bar fridge? Anybody *need* one? Jeff ________________________________________________________________ GET INTERNET ACCESS FROM JUNO! Juno offers FREE or PREMIUM Internet access for less! Join Juno today! For your FREE software, visit: http://dl.www.juno.com/get/tagj.

25 years, 3 months

3
2
0 0

D-116 Mini

by truthanl＠oclc.org

Date: Mon, 07 May 2001 08:27:53 -0400 From: Eric Chomko <chomko(a)greenbelt.com> Subject: D-116 Digital Computer Controls - minicomputer Has anyone ever heard of such a thing. I dug out a manual and a book on the system, and remember working on one years ago. The books are dated 1972-3. The company is out of New Jersey. Anyone one know anything about the D-116 system or about the fate of the company: DCC? Eric Yes Eric, I have a D-116 in my Garage!. It has a a full flank of front panel switches, a tty port and a paper tape machine Mounted in a 5 foot vertical Bud Cabinet. I have a shoebox full of tapes including some Diagnostics. I also have an IBM PC with a 20MB filecard which was used instead of the paper tape as an excerciser/ development program loader. OCLC the online Computer Library Center, where I work, used these as front end processors, to a bank of Tandem Computers. They were the units that ran the polling protocol similar to IBM Bi - Sync, I would e interested in your literature. Could you Scan the Manual or give me some description of it? Sincerely Larry Truthan truthanl(a)oclc.org. I am a "digest subscriber" on classiccmp.org, Please respond to my Email for most direct correspondence.

25 years, 3 months

1
0
0 0

Falcon PLA

by jeff.kaneko＠juno.com

Does anybody know where I could find the programming image for the address decode PLA for the 11/21 FALCON SBC? I need tomake sure that the one I have is original; if not, I'll have to make a new one. ALso, anybody got a boot rom image for this? Thanks-- Jeff ________________________________________________________________ GET INTERNET ACCESS FROM JUNO! Juno offers FREE or PREMIUM Internet access for less! Join Juno today! For your FREE software, visit: http://dl.www.juno.com/get/tagj.

25 years, 3 months

1
0
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Serious Request For Moderation (On Topic)

by RCini＠congressfinancial.com

I have a simple way of dealing with off-topic items that usually don't interest me (like musings about eBay or gun control)...it's called the <DEL> key. I don't let these tangents concern me as they eventually burn themselves out like an LED that one has connected directly to a 12v power supply. I've been on this list for, what, 4 years now. Everyone will have an opinion on any given topic. It's what gives the list some personality at the expense of some bandwidth. Time for a diversion. OK, let's bash Microsoft... Rich -----Original Message----- From: Ken Seefried [mailto:ken@seefried.com] Sent: Tuesday, May 08, 2001 10:53 AM To: classiccmp(a)classiccmp.org Subject: > Subject: Re: Serious Request For Moderation (On Topic) > From: "Sipke de Wal" <sipke(a)wxs.nl> > > I'll turn to all of you my other cheek while thinking > that this list is in serious need of a MODERATOR > Here, here. Two months on the list, and from what I can see one third of the postings have consisted of rude, ignorant, childish, self-righteous people flaming (pro & con) about eBay, and one third of rude, ignorant, childish, self-righteous people flaming about gun control (pro & con). Barely a quarter of any of the traffic is actaully about classic computers. I might point out for those on the list that clearly enjoy that type of signal-noise ratio, there are *other* places where you can go to vent your spleen dedicated to the topics. Of course, now we'll get two weeks of the same people going back and forth about moderation, and how vitally important and relevant to the classic computer world their opinions about eBay & gun control are, with the associated escalation of insults and derision... Nevermind... Ken

25 years, 3 months

1
0
0 0

> Subject: Re: Serious Request For Moderation (On Topic)

by ken＠seefried.com

> From: "Sipke de Wal" <sipke(a)wxs.nl> > > I'll turn to all of you my other cheek while thinking > that this list is in serious need of a MODERATOR > Here, here. Two months on the list, and from what I can see one third of the postings have consisted of rude, ignorant, childish, self-righteous people flaming (pro & con) about eBay, and one third of rude, ignorant, childish, self-righteous people flaming about gun control (pro & con). Barely a quarter of any of the traffic is actaully about classic computers. I might point out for those on the list that clearly enjoy that type of signal-noise ratio, there are *other* places where you can go to vent your spleen dedicated to the topics. Of course, now we'll get two weeks of the same people going back and forth about moderation, and how vitally important and relevant to the classic computer world their opinions about eBay & gun control are, with the associated escalation of insults and derision... Nevermind... Ken

25 years, 3 months

1
0
0 0

"Every OS Sucks"

by spectre＠stockholm.ptloma.edu

The great irony is that you can't display this video on anything but the modern OSes that the video alleges "suck" (viz., you need Real-ly Bad Player and/or Windows World Media Domination Player). http://cramsession.brainbuzz.com/video/everyossucks/default.asp?OSsucks=Open -- ----------------------------- personal page: http://www.armory.com/~spectre/ -- Cameron Kaiser, Point Loma Nazarene University * ckaiser(a)stockholm.ptloma.edu -- DON'T PANIC! ---------------------------------------------------------------

25 years, 3 months

1
0
0 0

Zuse info available on www.zuse.org

by jos.mar＠bluewin.ch

Thos of you interested in Zuse's old work should move to www.zuse.org This site is made by Karl Zuse's son. The site mainly exists to sell a multimedia CD that is upposed to be filled to the brink with information on Karl Zuse's machines, from the mechanical Z1 until the end of the Zuse company. An interesting note : a copy of the Z3 is being made, with modern relais that feature a LED reflecting the relais state. This machine will make the rounds in Germany soon. Jos Dreesen

25 years, 3 months

25
43
0 0

Need help with retrieving data from a DOS 2.11 formated flopp y disk

by Robert_Feldman＠jdedwards.com

Skipped content of type multipart/alternative

25 years, 3 months

1
0
0 0

eBay alert: TI 980B mini and a HUGE IBM drive

by JRichardson＠softwright.co.uk

OK, that has to be the coolest-looking piece of junk I've seen :-) Does anyone have any websites dedicated to all of the huge old oddball stuff like this? Jules > ---------- > From: ip500[SMTP:ip500@home.com] > Sent: 04 May 2001 20:35 > To: classiccmp(a)classiccmp.org > Subject: Re: eBay alert: TI 980B mini and a HUGE IBM drive > > Lay of the crack! Powder is much easier on the memory!! And that was > here, about a month ago. I've got one hanging over my desk on BIG chains > secured to eyebolts into the main joists of the floor above. Good > conversation piece! > Craig > > URL for the pix is: > http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=1235355979 > > "Jeffrey S. Sharp" wrote: > > > > Quoting ip500 <ip500(a)home.com>: > > > IBM drive 1235355979 > > > These were not offered here first > > > > No, but I think I remember someone talking about finding the big IBM > > drives on this list and even posting those same pictures. Or maybe > > that was another list. Or maybe I should lay off the crack... > > > > -- > > Jeffrey S. Sharp > > jss(a)ou.edu >

25 years, 3 months

1
0
0 0

D-116 Digital Computer Controls - minicomputer

by chomko＠greenbelt.com

Has anyone ever heard of such a thing. I dug out a manual and a book on the system, and remember working on one years ago. The books are dated 1972-3. The company is out of New Jersey. Anyone one know anything about the D-116 system or about the fate of the company: DCC? Eric

25 years, 3 months

6
9
0 0

Mac Portable (Was Re: Seriously OT: Firearms)

by pete＠dunnington.u-net.com

On May 7, 0:57, Mike Ford wrote: > >Yes, that 3.6V AA1/2 is rare and OVERPRICED around here. 16.xx to > >20 ea CDN. Still searching for cheaper sources in canada. Must it > > I buy them for about a buck at the swapmeet, maybe not brand brand new, but > not used and typically within the expected 5 year or so shelf life. Plenty > of people sell them new on Ebay for $6, so I don't bother. > > I will mention that I still have a few hunderd of the 4.5v alkalines for $5 > or less in quantity. Mike, are these the same batteries used in the Mac Plus? I can't seem to find any equivalent over here. -- Pete Peter Turnbull Network Manager University of York

25 years, 3 months

2
1
0 0

IBM Series/1

by vance＠ikickass.org

Anyone know where I can get technical docs for this thing? I have a couple of programming manuals, but I would like stuff like service manuals and hardware configuration guides. Peace... Sridhar

25 years, 3 months

2
1
0 0

Computers as weapons

by pete＠dunnington.u-net.com

On May 7, 15:26, James B. DiGriz wrote: > Trying to get in something at least a little on-topic, I've heard of > people being killed accidently by industrial robots and such, or the > prospect of the imminent demise of hospital patients due to script > kiddies screwing around with medical records databases or life support > equipment, but does anyone know of an instance where a computer was used > to kill someone? Including military or intelligence cases? The only documented case I recall immediately is the famous Therac-25 case. This was essentially a case of misdesign, which led to half a dozen deaths. A Google search for "therac" or "leveson" will find plenty of references. Some time ago, when I was doing a course on Software Engineering for Safety Critical Systems, I came across a book with several other reports, but I can't remember the title or author :-( I don't recall any other fatal incidents, though. -- Pete Peter Turnbull Network Manager University of York

25 years, 3 months

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Need help with retrieving data from a DOS 2.11 formated floppy disk

by pete＠dunnington.u-net.com

On May 7, 14:14, jimmy tsai wrote: > The company I work for has a machine that runs on DOS 2.11 > There are some data on that machine that we need to retrieve. The > information is transfered from that old machine to a 1.44mb floppy. > > When we put the floppy into our pentium winNT4 computer , we can not > read the information on the floppy. The NT os simply says it does not > know what format the files are at. I'm pretty sure 1.44M/HD disks didn't appear until DOS 3. Chances are the old machine has a double-density 720K drive, and if so you really shouldn't be putting 1.44M disks in it (they're a different coercivity). What you end up with is 9 sectors per track on a disk that the newer machine recognises as high density 18 sectors per track, so it tries to read it at double the data rate, and fails to find anything useful. If I'm right, you need to find some proper double density disks, distinguishable by not having the square hole on the right. -- Pete Peter Turnbull Network Manager University of York

25 years, 3 months

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Trenton State Computer Festival

by pete＠dunnington.u-net.com

On May 7, 13:52, healyzh(a)aracnet.com wrote: > It's not a Computer, but I know for a fact that an HP5MP Laserjet will not > work with 60ns RAM, it wants 70ns RAM (company I bought the RAM from sent > 60ns by mistake). It just plain wouldn't recognize the RAM. That may be because 72-pin SIMMs have 4 sense connections that tell the host the speed and size. 60ns was rare when the 5 came out, and I expect HP didn't include recognition of that code (possibly because it could also mean something much slower -- some codes are re-used, though I can't remember if the 60ns code is). If you changed one link on the SIMM I expect it would work fine -- so long as the SIMM was FPM not EDO. Most of the 60ns SIMMs I've seen are EDO, and that certainly won't work in an HP5M. -- Pete Peter Turnbull Network Manager University of York

25 years, 3 months

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Emulex QT14 and Fujitsu M2442: Problems writing two or more files on one tape

by hans＠Huebner.ORG

Hi there, I recently acquired a DEC TSV05 QBUS Pertec controller and a Fujitsu 9-Track tape drive. My TSV05 actually is a relabeled Emulex QT14 with a different prom on it - The DEC version only talks TSV05 emulation whereas the QT14 also speaks TMSCP. I've put the controller into my VAX 4000/500A which runs VMS 7.2 The Drive/Controller combo works fine for reading tapes. Writing works as well, but only the first file can be written. Upon trying to write the second file, the drive starts to spin the tape back and forth and then stops, giving the following error message: %COPY-E-WRITEERR, error writing MSA0:[]VMS072.B;1 -RMS-F-WBE, error on write behind -SYSTEM-F-DRVERR, fatal drive error %COPY-W-NOTCMPLT, DUA4:[000,000]VMS072.B;1 not completely copied To me this looks as if the drive has problems writing file marks, or I am doing something wrong. As I do not have any documentation on the drive, I'm asking here: Does anyone know the problem and has a solution for it? Do I need to configure the drive or the controller differently? Are there any VMS paramters I need to modify to get the thing to write multiple files on one tape? Thanks in advance, Hans -- finger hans(a)huebner.org for details

25 years, 3 months

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Florida Ballot Machines to be Auctioned

by vcf＠siconic.com

Palm Beach to Auction Voting Machines Palm Beach County is selling the voting machines at the center of last year's chad debate to help pay for more modern voting equipment. Supervisor of Elections Theresa LePore says because the Florida Legislature has voted to ban punch card ballots, the county will soon begin selling some or all of its 5,000 Votomatic machines on eBay, the online auction house. Proceeds from the sale will help the county buy voting equipment expected to cost between US$3 million and US$14 million. The state will give the county US$1.9 million. Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------------ International Man of Intrigue and Danger http://www.vintage.org

25 years, 3 months

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Teradyne PDP-11/84's

by msell＠ontimesupport.com

Hello, I'm looking at the possibility of purchasing an old DEC PDP 11/84 that was part of a Teradyne board test system. Does anyone remember seeing/working with these systems? In particular, I'd like to know: 1) Was it a common DEC PDP 11/84 with DEC markings, in a DEC rack, or was it redone by Teradyne, with their markings and special enclosure? 2) Were there any special firmware modifications that would make this difficult to use as a "regular" PDP 11/84? I'd like to obtain a 11/84 and a 11/34 for use at home for hobby purposes, running a mix of DEC and "other" operating systems, just for novelty. Sorry for the lack of experience in those questions, I've had very little experience with PDP 11's, but I do remember they were nice machines to work with when I did have the chance. Maybe soon I'll have all the time in the world to use one.... : ) - Matt "One World, One Web, One Program" - Microsoft Promotional Ad "Ein Volk, Ein Reich, Ein Fuhrer" - Adolf Hitler Many thanks for this tagline to a fellow RGVAC'er...

25 years, 3 months

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DEC Collectors Lunch, V1.02

by bob＠jfcl.com

This is a reminder that the second DEC collectors lunch of the season will be held this Saturday, May 12th, at high noon, in the Mountain View Fresh Choice Restaurant. You can find the full details, including a map, on our web page at http://www.jfcl.com/Computers/dcl.htm . The first DCL, held last month, was a great success and we hope to see all the same old faces plus a few new ones this time. Anyone interested in old DEC computers is welcome, so please feel free to forward this invitation to anyone you know who fits that description. Bob Armstrong

25 years, 3 months

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Free: HP 9000/350 & monitor (working)

by sieler＠allegro.com

Hi, If anyone wants a working HP 9000/350 & color monitor, please let me know. It runs HP-UX 8.0 (IIRC), and X-Windows. It's in Cupertino, CA, and time is of the essence. (I'd prefer to keep back the HP-IB disk drive, or swap it for a somewhat similar HP disk drive, if possible.) thanks, -- Stan Sieler sieler(a)allegro.com www.allegro.com/sieler/wanted/index.html www.sieler.com

25 years, 3 months

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Can I use pc keyboard on a pc jr

by ibmmacman＠midmaine.com

I have an IBM PC Jr that works but don't have the keyboard with it. is there a way to take an old IBM pc keyboard and make an adapter to make it work on the jr ?

25 years, 3 months

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Different IBM Model M keyboard

by fernande＠internet1.net

Hello, I like the IBM Model M keyboard. They are very durable, have a good feel, and I can easily find them cheap. Yesterday, I bought one that is a bit different, However. The feel, isn't quite the same, which really surprises me. It's not particularly bad, just a little different. I don't think it is any newer or older than others I have owned. The big difference is not feel, but color! This one has colored keys! I think it is set up for use with Wordperfect, but am unsure. The Shift keys are green, the alts blue, and ctrls are red. Then some of the other keys are a very light yellow, or creamy color and are labeled for different functions. Each of those keys has 4 functions depending if you press the shift, the alt, or ctrl. Unfortunately, I am missing one blue alt key cap :-( Is this factory IBM, or is it a fairly standard Model M with an aftermarket key cap kit? These aren't just stickers like I have seen before. Chad Fernandez Michigan, USA

25 years, 3 months

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System 36 Rescue?

by ncherry＠home.com

One of my neighbors is tossing a System 36(?) (5632) out in the trash anyone interested? It's located in Central NJ (Turnpike 8A, Monroe Twp) and I can store it for a while. I doubt there is much there and I don't know the condition. -- Linux Home Automation Neil Cherry ncherry(a)home.net http://members.home.net/ncherry (Text only) http://meltingpot.fortunecity.com/lightsey/52 (Graphics) http://linuxha.sourceforge.net/ (SourceForge)

25 years, 3 months

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eBay alert: TI 980B mini and a HUGE IBM drive

by ip500＠home.com

Trying to follow the suggested format for alerting the list to an "unusual" item on eBay. Just listed a very nice TI 980B ..Lots of lights and switches [no blikenlights however .. it does power up but no action on the panel]. The disk drive is a pull from a 3380E IBM drive cabinet and is by far and away the largest I've ever seen .. probably 130+ pounds. For the HTML impaired among us, item numbers are: TI 980B 1235346938 IBM drive 1235355979 These were not offered here first ... What is the "going" price for either?????? eBay, for all it's supposed faults still seems to be the venue of choice for odd and/or unique items. Craig

25 years, 3 months

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System 36 Rescue?

by mcguire＠neurotica.com

On May 6, Neil Cherry wrote: > One of my neighbors is tossing a System 36(?) (5632) out in the trash anyone > interested? It's located in Central NJ (Turnpike 8A, Monroe Twp) and I can > store it for a while. I doubt there is much there and I don't know the > condition. About how large is this system? I might be able to give it a home within the next couple of weeks. -Dave McGuire

25 years, 3 months

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Memory.

by geoffr＠zipcon.net

Is there anyone out there that needs 4164 or 41256 (64Kx1 and 256Kx1) DIP ram? I'm going through some of my old stuff and found some sleeves of 64 and 256K drams.

25 years, 3 months

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Mac Portable (Was Re: Seriously OT: Firearms)

by jhellige＠earthlink.net

>Can we get back ON TOPIC and talk old computers, such as how to coax a dead >mac portable to power up? I have one and can get a cracking sound out of the >speaker but nothing else. Also, try this page for some additional info: http://www.geocities.com/SiliconValley/Heights/3959/index.html Jeff -- Collector of Classic Microcomputers and Video Game Systems: Home of the TRS-80 Model 2000 FAQ File http://www.geocities.com/siliconvalley/lakes/6757

25 years, 3 months

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o-scope

by ajp166＠bellatlantic.net

From: Jim Strickland <jim(a)calico.litterbox.com> >> Probe compensation is off or the amplifier (vertical) are misadjusted >> internally. > >Ookay, how do I fix this? Is there an adjustment screw inside? And if so, >any recommendations on what not to touch so I live through the experience? :) Touch nothing. You require the manual and some aid/experience in adjusting something like the vertical amp. FYI there is serious HV inside scopes. Be careful. Allison

25 years, 3 months

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o-scope

by ajp166＠bellatlantic.net

From: Jim Strickland <jim(a)calico.litterbox.com> >So I'm a 'scope newbie, does the probe impedance (13 pf) have to match the >rating on the jack on the scope (47 pf) for the waves coming out of the >calibration jack to be properly square? And if so, does anyone have a source >for probes that work with ancient scopes like this? No not required to match. That specification is the capacitance presented across the input jack along with the scopes input resistance (usually 1megohm). Most scope probes have an adjustment to compensate for this and therefor it's not a problem. >Other than the waveform distortion (at worst the square waves wind up looking >like shark teeth, and at best they're a bit sloped on the leading and top >edges) the scope seems to work fine as far as I can tell. Probe compensation is off or the amplifier (vertical) are misadjusted internally. A square wave on that series should look square. Allison

25 years, 3 months

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How many transistors in the 6502 processor?

by ajp166＠bellatlantic.net

I'd heard, four bits in four packages. Allison -----Original Message----- From: Fred Cisin (XenoSoft) <cisin(a)xenosoft.com> To: classiccmp(a)classiccmp.org <classiccmp(a)classiccmp.org> Date: Sunday, May 06, 2001 3:26 PM Subject: Re: How many transistors in the 6502 processor? >On Sun, 6 May 2001, Mike Ford wrote: >> My guess is that 68000 as a name had a lot to do with adding a zero to 6800. > >I have been told several times that the 4004 was named after being the >equivalent of 4004 transistors. I don't believe that. But what WAS the >origin of the name? > >

25 years, 3 months

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o-scope

by jim＠calico.litterbox.com

It's not a computer, but it's surely over 10 years old... I got a scope today, a Tektronix either a 535a or 545a according to the operator's handbook in the little hidey hole in the top of the case. (which I'll gladly scan if anyone wants a copy). So I'm a 'scope newbie, does the probe impedance (13 pf) have to match the rating on the jack on the scope (47 pf) for the waves coming out of the calibration jack to be properly square? And if so, does anyone have a source for probes that work with ancient scopes like this? Also, how do I tell a 535a from a 545a? Other than the waveform distortion (at worst the square waves wind up looking like shark teeth, and at best they're a bit sloped on the leading and top edges) the scope seems to work fine as far as I can tell. Also, can anyone recommend a good book on scope use for newbies? -- Jim Strickland jim(a)DIESPAMMERSCUMcalico.litterbox.com ----------------------------------------------------------------------- BeOS Powered! -----------------------------------------------------------------------

25 years, 3 months

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Interesting show on the Computer Garage

by Lee.Davison＠merlincommunications.com

> England doesn't allow guns, and look at the mess they're in. Huh? What mess? > Guns kill plenty of people, sure. Guns don't kill people, people with guns kill people. Lee. ---------------------------------------------------------------------------- ---- This email is intended only for the above named addressee(s). The information contained in this email may contain information which is confidential. The views expressed in this email are personal to the sender and do not in any way reflect the views of the company. If you have received this email and you are not a named addressee please delete it from your system and contact Merlin Communications International IT Department on +44 20 7344 5888. ________________________________________________________________________ This message has been checked for all known viruses, by Star Internet, delivered through the MessageLabs Virus Control Centre. For further information visit: http://www.star.net.uk/stats.asp

25 years, 3 months

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+ and - on HP21 calculator?

by cmcmanis＠mcmanis.com

Hi, I've got an HP-21 that is missing the battery pack. Does anyone know which pin is plus and which minus when you look at the calculator from the back, with the AC adapter plug facing up? I can probably synthesize a battery pack with a couple of AA NiCd cells but wouldn't want to hook it up backwards. There are two contacts at the "back" of the battery box for the cells and it would be useful to know this info ... --Chuck

25 years, 3 months

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How many transistors in the 6502 processor?

by ajp166＠bellatlantic.net

From: Davison, Lee <Lee.Davison(a)merlincommunications.com> > >I've never heard of mos-multi-emitter-transistors > >Just etch multiple mos structures and have a common gate. Tie drains and >sources as required. > >Lee. Very common, also devices were split and run in parallel as two smaller devices were faster or had better characteristics then one larger one. On silicon designs rarely translate to discrete beyond the early parts. Allison

25 years, 3 months

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Allison: 2910c version of z80 and FPGAs - a little O/T

by ajp166＠bellatlantic.net

From: Richard Erlacher <edick(a)idcomm.com> >rather, the old solid 8's or 11's. Emanuel once told me there are a couple of >makers of PDP-11 look-alikes that work well enough to be of interest. Like the Mentec, they have the license and make cpu/systems to go with the OS. Some are quite fast compared the the 1978 gold standard (PDP-11/70). >From the other standpoint I can easily fine PDP-11/23s and even 11/73 or 11/83 series machines making the effort somewhat moot. People have done PDP-8s for "lab projects" for years and at least one was packed in to two arrays (cpu, memory and IO!) on a board small enough to barely hide a 3.5" drive. The problem is PDP-8 is not a rom friendly design from the start. PDP-11 is better there but much of the stuff out there wants for RAM, excluding the unique code for the Falcon and later class SBCs. Allison

25 years, 3 months

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For Sale: DEC System 5000 Memory Boards

by markn＠mr2.net

hi Folks... i have 8 memory boards salvaged from a DECSystem 5000, each board contains 78 TC511000AJ-10 chips (39 on each side). These are untested, although they came from a working system and have been kept in anti-static bags since removal. please email me with offers, i'm in the UK so i'd prefer to sell them only in the UK... although i will ship internationally if it's worth it. there's a picture of a board at: http://www.daneel.demon.co.uk/auctionimages/decmemory.jpg many thanks mark ======================= Mark Nias http://www.mr2.net http://www.marknias.com =======================

25 years, 3 months

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XiLinx XC40xx-PC84

by Lee.Davison＠merlincommunications.com

> I found a dozen or so Xilinx protoboards, size of a punch card half of it > open, 2 digit display, couple buttons, some kind of serial looking > connection, runs off a 9v battery, big socket in the middle > with a square chip in it of the same name. It's an XC4003A demo board and it came with tools, demo projects and a cable to hook it to your PC to program it. The idea was you could see how easy FPGA use was and then you'd buy 1000s of them for your next project. I have the chip datasheet, it's available from freetradezone.com > Who wants one for $5 and shipping, on the condition they figure out what it > is and report back? Do I qualify for the $5 card? 8^)= Lee. ---------------------------------------------------------------------------- ---- This email is intended only for the above named addressee(s). The information contained in this email may contain information which is confidential. The views expressed in this email are personal to the sender and do not in any way reflect the views of the company. If you have received this email and you are not a named addressee please delete it from your system and contact Merlin Communications International IT Department on +44 20 7344 5888. ________________________________________________________________________ This message has been checked for all known viruses, by Star Internet, delivered through the MessageLabs Virus Control Centre. For further information visit: http://www.star.net.uk/stats.asp

25 years, 3 months

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Allison: 2910c version of z80 and FPGAs - a little O/T

by ajp166＠bellatlantic.net

From: Richard Erlacher <edick(a)idcomm.com> >There's been so much unwarranted (IMHO) skepticism about the ability to transfer >a solid DEC CPU design into CPLD/FPGA that I'd really like to see someone try >it. The DEC folks didn't often do the wierd things that make circuits act There are several PDP-8s outther on FPGAs and there is nothing to say others would not be doable save for maybe enough gates (CPLDs) to do the job. >fix the older designs so they'd work fine in current technology, and probably >MUCH faster. I'm not interested in DEC stuff myself, but the fact that there Potential for speed is definately there using newer technology. >are several manufacturers making logical equivalents of the DEC CPU's today Well most of them are doing it from DEC mask sets under license. I presume you mean Alpha and PDP-11 (11/93 class). >yield 150), you'll get it done. Once the design is entered, simulated, >synthesized, simulated and tested as implemented, there's room for fixes. The If you dont simulate and test the sim you will likely fail. Allison

25 years, 3 months

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ewy

by Demon02554＠aol.com

if ewy sees this email me...i lost your address thanks, Robert Cobbins

25 years, 3 months

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Allison: 2910c version of z80

by ajp166＠bellatlantic.net

From: Chuck McManis <cmcmanis(a)mcmanis.com> >tools are *free*. You do have to take the time to learn VHDL but so far the >payoff has been worth it for me. I'm having a blast with this thing. My VHDL.... that was the cost I refer to. Most of me design experience is pre VHDL availbility. I already have the Lattice Synario and that bends my mind greatly. I havent used the small 2064 and 3030 FPGAs I have a good handful of yet. Time is costly for me these days. >"final" is a PDP-8 w/ Serial terminal (think DECMate in a single chip) with >full lights and switches. This chip can do that easily. I don't think it Major cool. My personal "I'd like to do" is a 32 bit wide '8 by grafting another 20 bits to the right side of the word and running it fast. Same instrcution set and the left 5 bits would remain the same. I'd use all 32 bits for OPR instructions to eliminate decoding (one per bit) and simplify the IOT interface some. Obviously the page (formerly 128 words) would be much bigger but direct addressing of 256MW out of a 4gb address space wouldn't be a significant shortcomming. I doubt I'd need to do the EMA. ;) Allison

25 years, 3 months

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How many transistors in the 6502 processor?

by Lee.Davison＠merlincommunications.com

>I've never heard of mos-multi-emitter-transistors Just etch multiple mos structures and have a common gate. Tie drains and sources as required. Lee. ---------------------------------------------------------------------------- ---- This email is intended only for the above named addressee(s). The information contained in this email may contain information which is confidential. The views expressed in this email are personal to the sender and do not in any way reflect the views of the company. If you have received this email and you are not a named addressee please delete it from your system and contact Merlin Communications International IT Department on +44 20 7344 5888. ________________________________________________________________________ This message has been checked for all known viruses, by Star Internet, delivered through the MessageLabs Virus Control Centre. For further information visit: http://www.star.net.uk/stats.asp

25 years, 3 months

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Fwd: Classic Computer Collection

by jhellige＠earthlink.net

Here's an email I received this morning that I thought I"d pass on. If interested, please reply to the original sender. Jeff >Status: U >From: "gen" <gen(a)webline.plus.com> >To: <jhellige(a)earthlink.net> >Subject: Classic Computer Collection >Date: Sun, 6 May 2001 15:44:58 +0100 >X-Priority: 3 > >Hi there > >I got your email address from the internet. > >I have a substantial collection of 'antique' computers, mostly 'first >editions' of systems such as Apple, IBM, Sirius, Apricot, Macintosh, Epson, >etc. These are not old and used, they are in pristine condition in their >original boxes with manuals, software & literature. In particular I have an >original Mac (128), 512K, MacPlus, 1st Mac II, Apple //e, //c, software, >collectables, etc. >Would you know of anyone interested in buying any of these items? I am >based in the UK. > >Regards -- Collector of Classic Microcomputers and Video Game Systems: Home of the TRS-80 Model 2000 FAQ File http://www.geocities.com/siliconvalley/lakes/6757

25 years, 3 months

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For Trade: PDP-11/23

by norm.anheier＠pnl.gov

I have a PDP-11/23 in a BA-23 enclosure (for example see: http://www.telnet.hu/hamster/pdp-11/kepek/updp1123.jpg). I rescued this >from a recycler. Anyone interested in this, I don't collect full systems -- yet! I am willing to part this out if you need something specific. Unfortunately the case is cracked and the front and back bezels and the processor and coprocessor chips are gone. Everything else is there. I have no idea what components are functional. It would be great if someone has some use for this, otherwise its going back to the recycler. Any trades for oldprocessor chips would be appreciated. Also, I frequently see old minicomputers, such as the PDP-11 at the scrapyard. I have no idea what is common and what is on everyones most wanted list. Anyone have any pointers to such a "most wanted list"? Thanks Norm

25 years, 3 months

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Allison: 2910c version of z80

by ajp166＠bellatlantic.net

From: Richard Erlacher <edick(a)idcomm.com> >3000A and 3100 series. My old XACT tools unfortunately don't support it either, >however, as the tools I bought only went through the 2K series. I've been >unable to find the dongle for that, however, though I don't miss it. The copy of XACT and earlier tools I can use for the 2064s runs fine on dos wothout a dongle. >The OS under which the XILINX tools seem to run best, at least according to >their tech support folks, is Win98, though they claim it runs just as well under >NT4. I see essentially no difference, myself. There are new tools for LINUX, I've run Synario under W95 and WinNT4 without problems. >by the way, though I don't know how well they work or are supported at XILINX. >They are VERY generous with support, however, once you've bought into their >tools, even though I only bought the cheapest set. Yes, they are good but not so cheap. >I'd not be afraid to give the SPARTAN series a try for building an experimental >version of a '70's-'80's generation CPU. They are relatively (choke) >inexpensive and available in versions with sufficient on-board RAM that you >might not need the higher pin counts required to interface external memory. >Unfortunately, the high-pin-count parts are hard to prototype. The real problem is making/buying a protobaord for the high pin count, that and time to actually do it. I know there are plenty of parts out ther that can and many different tools. Allison

25 years, 3 months

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How many transistors in the 6502 processor?

by ajp166＠bellatlantic.net

From: Brian Chase <bdc(a)world.std.com> >Nice, now if I could only get enough info to implement one in TTL. :-) >Silly, yes, but it would be a fun project. Well you know the timing, instruction set, internal organization and register set... what else do you need? Granted VHDL would be nice but the internal circuit schmatics as built are anything but TTL. The biggest difference from the mos version going ttl would likely result in is a static register cells instead of dynamic making the result fully stopable. Allison

25 years, 3 months

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Allison: 2910c version of z80

by ajp166＠bellatlantic.net

From: Heinz Wolter <h.wolter(a)sympatico.ca> >AMD did have an Ap note on the 2901's that described >a then fast (I think about 4mhz) version of the 8080. At 4mhz that was 2x standard 8080 speed. Hitting 8mhz with (the 1981 parts) with 2901s as Z80 was hard and that was only 2x. Within a year (1982) there would be 6mhz z80s and by 1984ish 8mhz z80s. >IDT later made much faster versions of the 2901 and 2910- >in CMOS and they were I recall about twice as fast. 2901's Foo, the 2910 was only soso. Would have liked a faster 2902 or 2911. >a nice Virtex or Spartan fpga will fit a whole processor >with up to 1mbit or sram on chip. Far more interesting, out of my range of tools to do. Allison

25 years, 3 months

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o-scope

by djg＠drs-esg.com

From: Jim Strickland <jim(a)calico.litterbox.com> >So I'm a 'scope newbie, does the probe impedance (13 pf) have to match the >rating on the jack on the scope (47 pf) for the waves coming out of the >calibration jack to be properly square? And if so, does anyone have a source >for probes that work with ancient scopes like this? > Most probes can be adjusted to work with a range of capacitance, they normally have a little adjustment hole at the end that attaches to the scope. Adjust it for the flattest trace. >Also, how do I tell a 535a from a 545a? > Look above the CRT and see if it says TYPE 535 or TYPE 545? I assume this is a big old tube scope, if not ignore the rest. >From Oscilloscopes, Selecting and Restoring a Classic by Stan Griffiths the 535A is 15MHz bandpass 5MHz trigger. 545A 33 MHz bandpass 5 MHz trigger. Bandpass may be less depending on what plugin is installed. I have a 547 (50 MHz bandpass and trigger) which I use to maintain my PDP-8's. Mine is a nice scopes but can be a little temperamental. Depending on what you are using it for the limited bandwidth (especially trigger) may be an issue. David Gesswein http://www.pdp8.net/ -- Run an old computer with blinkenlights

25 years, 3 months

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TVs Undercurrents report on JIMs computer garage/classic computer collecting, who wants to see this?

by claudew＠videotron.ca

Hi all I taped the re-braodcast of this today. I am thinking of transfering this to a multimedia file and dumping it somewhere, it's about 5-10 minutes and does not go indept on the "hobby" but it's kinda fun and I think Jim has a few good "quotes" in there...about the hobby, computers and the vintage "market".... Now I only have to check to see if I have something around here to transfer this to a file... Claude http://computer_collector.tripod.com

25 years, 3 months

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How many transistors in the 6502 processor?

by ajp166＠bellatlantic.net

From: Mike Cheponis <mac(a)Wireless.Com> Reordered your list by transistor count and added caveats... >From Microprocessor Report, in chronological order: > >8008: 3.5K transistors 14 mm^2 >1802: 5K transistors 27 mm^2 if 1802 were done in Nmos it would have been far lower transistor count. As it is CMOS there are many cases in the logic where two complmentary transistors exist where NMOS would have used one. It is also the ONLY one on the list that was fully static logic. Its registers used a lot of transistors as the raw flipflop. >6502: 4K transistors 21 mm^2 fewer transistors and also a clever design made for an easy mask that had good yeild for the die size. >6800: 4.1K transistors 16 mm^2 >8080: 4.8K transistors 20 mm^2 >8085: 6.5K transistors 20 mm^2 >Z80: 8.5K transistors 18 mm^2 >6809: 9K transistors 21 mm^2 >Z8001 17.5K transistors 39 mm^2 >8086: 29K transistors 33 mm^2 >8088: 29K transistors 33 mm^2 >68000 68K transistors 44 mm^2 >I really hate to interrupt this group's speculation with actual data, but >I'm weird in that way. Thanks, it's not as if the data was a top secret. Allison

25 years, 3 months

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How many transistors in the 6502 processor?

by ajp166＠bellatlantic.net

From: Richard Erlacher <edick(a)idcomm.com> No question the 6502 was fewer gates than z80/6800 as that was the guys to chase. The 8080 was hard to hit as the 8080 required so much more external support that any of the 5V only cpus. It would be more fair to compare 6502 to 8085 in the gate count and die size derby. >believe the 650x core with only four internal software-accessible registers >(A,X,Y, SP) would have a substantially lower gate count than a Z80, which has >lots of register resources, (A,B,C,D,E,H,L,IX,IY,SP, plus a second set of the >same) and it does, but nowhere near the ratio that these registers suggest. Of >course there are several ways of looking at the definition of "gate" but it's Think of registers as memory bits... Z80 those number about 208 where 6502 has far fewer. However this is relative as a register can be one transistor and cap (dynamic) or a lot more for static. I believe the 6602 was a dynamic machine like many of the time. >odd that the ratio of gates consumed by each of these cores doesn't approach the >>2:1 that this estimate reflects. The production level pricing, basically a >cost based on silicon by the pound, seems to reflect this same ratio as do the >comparisons of the era when the 6502 was current. Whats not relected is the associated gating and silicon busses. Those eat logic and realestate as they are often less regular. >What would be interesting, since it's conspicuously absent from the list quoted >below, is the transistor count in the 6802 (a 6800 with internal clock >generator) and 6809. Yes, those should be there. Allison

25 years, 3 months

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