test-drb February 1999

test-drb@ccmp.vtda.org

178 participants
709 discussions

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

25 years, 4 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

25 years, 4 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/

25 years, 4 months

Help: Thinker toys Wunderbuss???

by edick＠idcomm.com

It's difficult to give you information about wirewrapped boards. What, exactly, did you want to know. You're probably right in that the backplane is S-100, since that's what the Wunderbuss was. It's clear what the 8" floppy drives are. I certainly can't tell you what the punch/reader is if you can't tell. Mounting a motherboard on plywood was an easy way to do things if you knew well in advance that you needed to "get at" the boards with 'scope probes, etc. It saved extender boards and the associated problems. Dick ---------- > From: Mike <dogas(a)leading.net> > To: Discussion re-collecting of classic computers <classiccmp(a)u.washington.edu> > Subject: Help: Thinker toys Wunderbuss??? > Date: Friday, February 05, 1999 5:16 PM > > 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

25 years, 4 months

Commodore 64 stuff wanted

by dgm+＠pitt.edu

I'm specifically looking for a power supply for a Commodore 64, but I'd also like to pick up some old documentation, too. In particular, I used to have the "Programmer`s Reference Manual" and a book that mapped all of the memory locations and described the kernel routines in detail. Any info would be appreciated. I'm in the Pittsburgh, Pa area. Dave McMurtrie

25 years, 4 months

Need a copy of TRSDOS 6 OS

by steverob＠hotoffice.com

Actually, I meant to say "Date" not "Time". Can't blame this on the europeans. "02/04/99" should work either way. Actually, I assumed that it was operator error but the other apps work OK. Since the other software works properly (IE: Profile III), I "think" we can eliminate hardware problems. And... since the dummy behind the keyboard (Me) is functioning correctly, that only leaves the software. Another question: There are several sites on the net that have Model III and IV software on-line. How do I get the software from a modern Pentium (surfing machine) on to a diskette that is readable by the Model IV? I also have a TRS-80 TL2 with 5-1/4 and 3-1/2 inch drives. Can I download the software on to a 720K disk and then transfer it 360K using the TL2? Thanks... Steve Robertson - QA Team Leader <steverob(a)hotoffice.com> -----Original Message----- From: Sam Ismail [SMTP:dastar@ncal.verio.com] Sent: Friday, February 05, 1999 2:24 PM To: Discussion re-collecting of classic computers Subject: Re: Need a copy of TRSDOS 6 OS On Fri, 5 Feb 1999, Steve Robertson wrote: > I am having a little trouble with my TRS Model IV . When I boot off of the > TRSDOS system disk, the system prompts for the time and won't go any > farther. When I enter the time, it clears the field and prompts again. 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]

25 years, 4 months

Need a copy of TRSDOS 6 OS

by cmcmanis＠mcmanis.com

At 11:23 AM 2/5/99 -0800, Sam Ismail wrote: >On Fri, 5 Feb 1999, Steve Robertson wrote: >> I am having a little trouble with my TRS Model IV . When I boot off of the >> TRSDOS system disk, the system prompts for the time and won't go any >> farther. When I enter the time, it clears the field and prompts again. >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?) Try entering a 1998 date. The year '99' to TRSDOS may be "special" in the sense that they code it to mean "date not initialized". If this fixes it then you've just entered the Y2K Zone ... --Chuck

25 years, 4 months

1130 has been claimed

by Jgzabol＠aol.com

In einer eMail vom 05.02.99 16:09:15 MEZ, schreiben Sie: << John, Hi. Do they have a website? If yes, can you supply the URL? Thanks, John Amirault Jgzabol(a)aol.com wrote: > There is a _WORKING_ 1130 at the IBM Museum in Sindelfingen, Germany. > > John G. Zabolitzky >> As far as I know, they do NOT have a web site. I believe telephone is the only way to get into any contact with them. John

25 years, 4 months

Wanted: Just about anything IMSAI

by dragon＠panix.com

I am trying to get 2 more IMSAI 8080. Does any one out there have one for sale Michael

25 years, 4 months

Need a copy of TRSDOS 6 OS

by fauradon＠pclink.com

Me Too... I didn't mean to read hostile;) Francois >Oops. I forgot to add the :) at the end to prevent people from getting >hostile ;)

25 years, 4 months

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test-drb February 1999