test-drb January 2001

test-drb@ccmp.vtda.org

181 participants
415 discussions

by pete＠dunnington.u-net.com

On Jan 3, 3:43, Mike Ford wrote: > >One thing I built years ago was a cable with a SCART plug on one end and > >a box on the other with 6 BNC sockets (composite in, composite out, R, G, > > I wonder where I could find a SCART connector in the US? It sounds like the > connection I have on a Sony monitor, 130x (x is 4 or 6 or something), that > I have never been able to test. > > BTW I have found a couple sources for cables at $25, but I need the much > cheaper kind. ;) Ouch! Over here, cheap SCART leads cost as little as a couple of pounds! If you want connection tables and pictures, try some of these: http://www.kevlar.karoo.net/scart.html http://www.drdish.com/knowledge/0005/eng/000504.shtml http://www.netcentral.co.uk/satcure/scarts.htm and probably hundreds of others that Google could find for you :-) -- Pete Peter Turnbull Network Manager Dept. of Computer Science University of York

25 years, 1 month

Looking at Thomson MO5 PAL video output and MO5 connector pinouts

by claudew＠sprint.ca

Hi I have one of these Thomson MO5' now in my collection. I know it's a PAL video output. Very little info on the net about this one. Lotta emulators but not about the real machine hardware. Would like to know where does the PAL video come out of... Anybody have a simple suggestion for looking at PAL video signals? Also would like the pinout for the odd connector coming out of the unit... Claude -- The Canuck Computer Collector http://computer_collector.tripod.com

25 years, 1 month

decus lives!

by pete＠dunnington.u-net.com

On Jan 3, 18:01, Adrian Graham wrote: > At least in the UK anyway. The recent flurry of DECUS complaints on here > made me wonder what had happened to my own membership - sure enough it > expired last month so they're wanting another 25 english pounds off me. > Thing is, is it still worth it to be a member? I haven't been to the > seminars etc for *years* and don't have a requirement for hobbyist kits or > anything like that...... I'm not sure a UK membership entitles you to very much in the way of hobbyist kits -- our UK branch seems very backward in all respects except collecting money. My membership expired years ago and when I was invited to pay not only the ?25 membership but a similar "joining fee" to rejoin, I declined -- I was a student at the time and it wasn't affordable. Especially since they wanted such high prices for anything from the software library. Anyone know just what hobbyist licences/kits are available to UK members? -- Pete Peter Turnbull Network Manager Dept. of Computer Science University of York

25 years, 1 month

Altair Owners ...

by kapteynr＠cboe.com

Hey wait a minute ... A BIOS on an Altair ? Sure there were add-ons (years later) that did this, but if you really want authenticity this is what we did -- I always had to "boot" my Altair with a simple paper tape loader program entered from the switches on front panel. I did this so many times, I had the 30 octal codes memorized. Once I had Altair BASIC loaded, I generally kept the machine powered up as long as possible. I could write BASIC programs and "save" them in one of two ways -- (1) by punching a paper tape on a Teletype machine, or (2) a notoriously unreliable cassette tape interface. Later we got a surplus 9-track magnetic tape drive, but that was also a big pain. I never knew anyone who actually had a actual floppy for their Altair. I seem to remember that they cost more than the computer itself, and the computer was quite expensive -- ($2,000 1974 dollars). But then, my brother and I were 12 and 13 years old and we only new a couple of other Altair owners. -Rob -----Original Message----- From: Richard Erlacher [SMTP:edick@idcomm.com] Sent: Wednesday, January 03, 2001 10:39 AM To: classiccmp(a)classiccmp.org Subject: Altair Owners ... Has anybody got an ALTAIR that actually runs CP/M? I have one OS for an Altair, namely a system with the MITS serial board an a Morrow DJ2. Not being an Altair-owner myself, I don't know how, exactly to prepare a BIOS for the two Altair add-ons I'm building up for eventual liquidation on eBay. I've got two genuine MITS boxes, one intended (but never used as such) FDD box, with a front face plate I made in the shop, which houses a PSU, and offers four HH 5-1/4" drive bays, with a dual 50-conductor cable hookup in the back, the latter hookup being of my own design an the opening for it having been milled by me. The box is original, but there's no identification of any sort, since this was from a batch of raw boxes I bought when MITS went tits-up. The other, essentially identical box is a MITS HDC box, with the original cardcage and PSU (repaired) but no back cover, which once covered the card cage opening from the rear, and, consistent with the original MITS accommodated a parallel interface to the Altair computer. It is completely original and has no modifications to the box, which still bears the original dress panel and key-switch, but the box houses a WD-1002-05 bridge controller, capable of handling 4 floppies (albeit 5-1/4" and 3-1/2" only, due to the supported clock rate). This box is intended to be used in tandem with the COMPLETELY COUNTERFEIT drive enclosure mentioned above, though it's being done in a period-authentic way. What I want to know is what sort of support for floppy diskettes will be require, if any, based on the fact there will only be 5-1/4" drives accomodated in the system. Has anybody got a "better" sort of BIOS setup for booting from the WDFDC? I'm looking to clone something, so the eventual owner will be able to build and use a boot diskette from something else, prefereably something that already exists, yet the only running Altair boxes I've seen/heard-of myself use the hard-sectored mini-floppies of the Northstar, and that's not an option. Any suggestions? Dick

25 years, 1 month

Need assistance with project ($$)

by vcf＠siconic.com

This is directed to any TRS-80 experts: I need help with a consulting project I'm working on. I need to get a copy of the TRS-80 game Combat from a PC emulator file onto either cassette or diskette (better yet, I need to get an original copy of this game). Additionally, I need assistance in figuring out how to configure the hardware for this game. Combat is a multi-computer, multi-player game. It requires some sort of physical serial connection (either via modem or serial cable) between two TRS-80 computers. It allows two people to play against each other in realtime. If you think you can help me with this, or preferably, if you have experience with this game, please do contact me ASAP. Your assistance will be monetarily compensated (this is your chance to make some money with this hobby other than selling stuff on eBay! :) Please contact me at <sellam(a)vintage.org>. If you know anyone who might be able to assist, please forward this message to them. Thanks! Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------------ International Man of Intrigue and Danger http://www.vintage.org

25 years, 1 month

DecStations

by LFessen106＠aol.com

Does anyone on the list know what year the Personal DECstation 5000/33 (Maxine) was released? How many MIPS it runs at? And how much it originally costed? Thanks, -Linc.

25 years, 1 month

cleaning QIC?

by red＠bears.org

I need to repair a partially torn tape, and remove some sticky gunk from the media itself. Hopefully I'll be able to do this in a way that will allow me to read the tape one last time to get an image of the data. This particular tape got gooed up in a tape drive which had a decayed capstan. It didn't get gooed up too badly, but it looks like it was enough to cause a headache. I was able to clean the goo off the cassette mechanics by using a nr. 7 X-Acto blade dipped in alcohol. All went well with that. When I tried to read the tape to make an image, it progressed to a certain point on the tape and gave up. Examining the tape revealed the following defects: * traces of capstan goo * a small, ca. 1/16" tear in the tape I'm assuming I can use some splicing tape on the tear, but what can I use to clean the goo off the tape? Alcohol worked well on the cassette, but I've heard that it can cause the oxide to separate from the substrate if used on the tape itself. Any suggestions or speculations on my chances of succeeding would be appreciated. I'm in a bit of a bind. ok r.

25 years, 1 month

It had to happen sometime

by mcguire＠neurotica.com

On December 29, Marvin wrote: > I was looking at the Heath Listserver messages and here is the URL of a > disassembled Heathkit "kit" selling on Ebay. Current price (someone has too > much money on their hands) is $103.50. The URL is: > > http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?MfcISAPICommand=ViewItem&item=5328… > > The next thing will most likely be similar computer "kits". There was a > discussion on the Heath listserver about this unit and Chuck Pension spoke > about this type of activity being another cottage industry. Anyone > interested in a disassembled Heathkit H-89, or H-11, or ... :). I thought you had to be smoking crack or something, Marvin; nobody would actuall *do* something like this...but I just looked at the auction. It's true. Be afraid. Be very afraid. Why do we have to stop at things that were originally kits? I can see it now: "DEC PDP-11/34a KIT! L@@K! RARE!!" Better start buying stock in ChemWik! -Dave McGuire

25 years, 1 month

datasheet for intel compatiable 8042 ic.

by ajp166＠bellatlantic.net

From: jpero(a)sympatico.ca <jpero(a)sympatico.ca> This is microcontroller chip commonly found on clones till post pentium packaged in 40 pin DIP. After that, non-legacy and embedded 8042's in chipsets in newer boards and later. Right now I need the pin info where clock goes into that 8042 so I could bypass current clock source. Motherboard's clock generator is sick. Most of it is partially working, which is very common on one brand chipmaker. !! Do it by injecting 8042 directly with crystal xtal or use 4 pin oscillator ic. Need Mhz as well, 12Mhz? Pin 2 is X1 (clockin) and Pin 3 is clock out. Same pinout as 8041/8741/8742 Allison

25 years, 1 month

Monitor help needed

by BGarvey355＠aol.com

I'm new to this list but not to classic computers, well...to classic IBM's I am, ask me about Atari computers though, then we can talk ;-), which is the reason for this post. I picked up a couple of monitors from a friend of mine and I'd like to find out what they are for and can I utilize them on other classic computers in my collection The first monitor is an IBM 5151, it has a 9pin connector on it's built in cable The second monitor is actually a terminal I think, it's a 3179-2, and it has some strange connectors on the back of it, including a 25 pin for the monitor itself coming from the pedestal base. Is there any use for these monitors other than there intended system? thanks in advance, Brent

25 years, 1 month

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test-drb January 2001