test-drb

test-drb@ccmp.vtda.org

101090 discussions

by jolminkh＠nsw.bigpond.net.au

>I have an old IBM motherboard in front of me, and not really sure if it's >worth keeping/trading or (gasp) trashing. It's marked "16KB-64KB CPU" on >the top, 3 of the 4 banks or RAM are occupied. IBM chips are dated >1981/1982. Otherwise I don't really know what to look for in identifing >this. Well I'd keep it. Thats the original IBM PC motherboard. The only other question would be which of the first few bios revisions it has.

27 years, 7 months

Wooden Laptops [ Re: Laptop ID ]

by joebar＠microsoft.com

Speaking of wooden laptops... check out http://www.luddite.com/ludditehome/product.html - Joe :-) ----- Original Message ----- From: Nev Dull <nev(a)bostic.com> To: /dev/null <nev(a)bostic.com> Sent: Thursday, February 04, 1999 1:05 PM Subject: HTML O' The Day > >http://www.luddite.com/ > ... the finest in custom wooden computing. >

27 years, 7 months

~OT: Computer misconceptions

by fauradon＠pclink.com

Computers do what you tell them to do, not what you want them to do (some of us can manage both;) Francois >A classic misconception, fostered by humans... When your bill is wrong, >your bank >account balance screwed up, your paycheck short.. They say IT WAS A >COMPUTER ERROR! > > Will > > >Max Eskin wrote: >> >> Hi, >> I'm thinking of putting together an FAQ-like document intended to combat >> the stupid ideas people have about computers. So, does anyone have any ideas >> for common misconceptions about computers that I should address? So far, I >> have the places various things originated (i.e. IBM did _not_ invent the >> PC, Apple did _not_ invent the GUI, etc.) >> >> --Max Eskin (max82(a)surfree.com) >

27 years, 7 months

Need a copy of TRSDOS 6 OS

by fauradon＠pclink.com

I don't think that 2/5/99 is a more valid date than 5/2/99 Anyways the Europeans got it right you are the one writting the date backward. The proof is that everyone in europe places the day first so they must be right. Hint the Europeans go in increasing relevance: day/month/year and not the very unelegant month/day/year. Why don't you set the time in Minutes:Seconds:Hours while you're at it? Francois Disclaimer: I've adopted the US standard now but I think it sucks. >Are you sure you're entering the time in the "correct" format (i.e. not >like those silly Europeans who put the day before the month?) > >Sellam Alternate e-mail: dastar(a)siconic.com >--------------------------------------------------------------------------- --- >Always hasslin' the man. > > Coming in 1999: Vintage Computer Festival 3.0 > See http://www.vintage.org/vcf for details! > [Last web site update: 01/15/99] >

27 years, 7 months

Help: Thinker toys Wunderbuss???

by dogas＠leading.net

I have a chance to get an old system but I'm having trouble locating info for it.... It's a homebrew (s-100??? mounted on plywood for chriscakes). Thinker toys Wunderbuss, 11 slot mb, 2x8" drives, 2x(stringy?)wafer drives, alot of wirewrap boards... maybe a punchtape/reader :) !!! Can anyone give me more/any info on this type of setup?? Thanks - Mike

27 years, 7 months

Basis 108 (was: TRW Swap Meet)

by fmc＠reanimators.org

Marvin <marvin(a)rain.org> wrote: > BASIS Incorporated > 5435 Scotts Valley Drive > Scotts Valley CA 95066 > (408) 438-5804 > > This would seem to imply that there should be quite a few more over here > somewhere. Hmm. I'm just flipping through some issues of the First Basis Users Group newsletter, and it looks like Basis in Scotts Valley was out of business by October 1983 (with its inventory being bought by an "investor" and re-sold through a couple of other companies on west and east coasts), and other attempts at establishing a distributorship through other US-based companies met with varying degrees of failure, with the end result being that if you wanted a Basis you had to buy it >from Basis in Germany or find a dealer willing to do that for you. And it looks like there was some sort of Basis in Germany into at least 1987 when I run out of newsletters. But yeah, I have one, a friend has one, he had another one when he lived back east, I've seen others go by, and they were very nice machines, superior to Apple ][s in several ways. So I don't think the 108s are that uncommon in the US. A 208, now.... -Frank McConnell

27 years, 7 months

3-phase (was: Re: CDC 9766 Drive and packs)

by Philip.Belben＠pgen.com

> so don't get the idea that you can > run it in your house or garage. My parents have 3-phase electricity at home, but I don't (yet). But I think it's more common in the UK than in the US. (BTW my parents have a 16th century farmhouse which they heat electrically during the winter. Maximum load we've measured, 36kW.) I am told (I think it was Toy Duell first pointed it out to me) you can get reasonable 3-phase using a largeish induction motor (say a mechanical rating 2 or 3 times the electrical load you want to connect), without a mechanical load: wiring one phase to ground, a second to line, and the third to line through a capacitor for an approximate 60 degree phase shift. The induction motor will also act as a generator, and produce enough emf to tidy up the phase relationships and voltage imbalance. But be warned - you will not have the right voltage, and one of the phases (rather than the star point) will be at ground potential. A bank of three single-phase isolating transformers should do the trick if either of these is critical (a single autotransformer, upstream of the converter, will also work if only voltage is critical.) Also be warned. I am confident that this works _in theory_ but I have never tried it. Philip.

27 years, 7 months

Wanted: Just about anything IMSAI

by dragon＠panix.com

>> Three questions: >> >> Where will you be shipping from? >> >I'm in Denver I am in New Jersey. >> How much do you want? >> >I'd settle for a similar function for the ISA bus. I don't have any ISA cards to give away, so I offer you $10 per card. >What's a slave card? A Slave S-100 card usually have some memory, a CPU and at least a RS-232 connector. What would happend is that when your system started up. Your master CPU on the S-100 bus would load the memory of the slave cards with something, like the slaves own version of CP/M. You could have as many of these things as you box could fit. There were a number of way I/O to the the users of the system could be accumplished. One was route all the slaves I/O to the user throught the the s-100 bus to a I/O card connected to the users terminal. The other and more tipical way what to have each user have their termianl connected to the slaves RS-232 port. The drawback to this method was there had to be a bus master handling all bus traffic to an from I/O devices such as disk drives for each of these slaves since the slaves could not do it themselves. Compupro made a Z80 slave card that supported between 64K and 256K or RAM that had a RS-232 port. If I recall correctly you could only put 8 of these on you bus. But you could hack them to put as many as your bus supported. This is the type of board I am looking for. There was another method of placing multiple CPU on your bus. That basical ment building a Single Board Computer (SBC) that could use the S-100 Temporary Master Access (TMA) hand shaking. The S-100 supported up to 16 of these TMA on a bus. The advantages is the TMA's tended to use the bus more efficiently comparied to slaves boards with requried a bus master present servicing them. I don't know who use to make SBC that fully IEEE 696 standard for TMA access but do know that they were out there. >I have a couple of primitive (as primitive as any S-100 board) SBC's from >whoever made the famous SBC-100 and SBC-200. I have one of each, I think, >and they're in unknown condition, as I inherited them from someone who was >moving away and didn't want to haul them. What an SBC-100 and a SBC-200 do? Keep me in mind should you know of anyone who has IMSAI 8080 system for sale out in your neck of the woods. Michael

27 years, 7 months

FS: M868, M8650

by jlwest＠tseinc.com

I'm not quite willing to give away my secret source yet (they're a commercial source), but I wanted to let folks know in case anyone is desperately searching for the following.... My source has several omnibus modules available: M868 simple dectape control $100.00 plus shipping M8650 console interface $100.00 plus shipping Let me know if interested... Jay West

27 years, 7 months

Need help on old Tandy stuff -- Allison? Anyone else?

by sinasohn＠ricochet.net

At 09:32 PM 2/4/99 +0000, you wrote: >me wants the machine code monitor. But the user in me wants to be able to >enter text. And most people are just users. I didn't know there *was* a user in you. 8^) >Yes, you could get text editor ROMs for the HX20. But you couldn't buy an >HX20 and start using it to enter text in the field. That, IMHO, is why >the M100 was more successful. Don't underestimate the value of a RatShack on every corner. --------------------------------------------------------------------- O- Uncle Roger "There is pleasure pure in being mad roger(a)sinasohn.com that none but madmen know." Roger Louis Sinasohn & Associates San Francisco, California http://www.sinasohn.com/

27 years, 7 months

Jump to page:

2026

2025

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

2009

2008

2007

2006

2005

2004

2003

2002

2001

2000

1999

1998

1997

test-drb