test-drb February 1999

test-drb@ccmp.vtda.org

178 participants
709 discussions

by musicman38＠mindspring.com

>At 11:11 AM 2/15/99 -0500, Phil wrote: >>Purchased a Sanyo MBC 550 today at the local thrift for $3.50.. > Then you paid about $3.50 too much! >>Just the CPU, no monitor or Keyboard.. > OOPS! The keyboard is special, only the Sanyo one will work on the 550. >>Anyone know how many of them were produced ? > > Lots and lots and lots. I used to see them all over. > > Joe Joe, I know that you a special love for these machines (Sanyo 550) I have read your comments on the forum on the one you soaked so much money in trying to get it to run.. (HeHe)!!! Maybe they are worth collecting in the fact that they could possibly be the most "Incompatible" "Compatible" early DOS machine ever produced.. <HeHe>!! Anyway if they are so plentiful in Orlando how about getting me a Keyboard and a monitor for it.. <Grin>!! I still have some have some change left from the $3.50 I paid for the CPU... Phil... BTW: The Clerk at the Thrift store was convinced it was a VCR, and now that I look at it, it does look very much like a VCR.. Same size, Same color (Metal Gray / Black Front).. OK that makes it collectable Right !!!! "In the year 2525 (If man is still alive, if woman can survive) Commodore 64 computers will still be plentiful and routinely sold at Garage Sales"

25 years, 10 months

[Fwd: Antique Unix Computers]

by jimw＠agora.rdrop.com

Forwarded from misc.forsale.computers.other.systems Replies to original poster, not to me or the list please. -jim

25 years, 10 months

M SoKit 68

by amichael＠nortelnetworks.com

I've never heard of the M(icro)SOKit 68, but I'm wondering how many other enterprising teachers designed their own small systems for training? I have a "U of T 6809" board, a teaching aid developed by the University of Toronto in the early 80s and manufactured for them by a Toronto company. At one time they were even advertised nationally in one of the Canadian hobby electronics magazines. It was a single-board system with a monitor/debugger in eprom, and you'd run it from a terminal. You could develop programs on-board, or download 6809 code from a host system and run it on the card. Does anyone else have one of these? Arlen Michaels On Sat, 13 Feb 1999, Lawrence Walker" <lwalker(a)mail.interlog.com> wrote: > In 1983 at the end of taking a digital tech course at a community > college > here in Toronto at George Brown CC, I spent about a month assembling and > debugging a trainer kit that my prof was marketing, similar but more > sophisticated than the Heathkit ET34400. It was called a M(icro)SOKit 68. > It was based , of course, like the ET3400 on the M6800 CPU. Does anyone > have > one of these out there ? It was geared to teach students about micros by > building their own micro. I know he sold a number of them, but don't know > how > many. I have the manual, parts #s, etc. if anyone is interested. Included > in > the manual is a couple of pages of layouts obviously meant to be > photocopied > and etched. > > ciao larry > lwalker(a)interlog.com > -- Arlen Michaels amichael(a)nortelnetworks.com

25 years, 10 months

Questions on the days finds

by healyzh＠aracnet.com

I was out doing a little junking and ran across a interesting little ROM Pack. It is a Tektronix "4052 Character and Symbol" pack (C) 1981. Am I correct in assuming that it is for a Tek terminal? I also found two very interesting floppy disks, I think I reconginze them, but can't remember the name of the computer I think they go to. They're Amsoft CF-2 Compact Floppy disc's. They're double sided for single sided floppy disk drives. They measure 3 9/10" x 3 1/10" x 1/5". Both are in protective hard plastic cases and the one is still in the shrink wrap! Then there were a few Tandy cartridges, and a TI-99/4A "Terminal Emulator 2" cartride that I picked up at the same place. At my favorite book store I got a couple cool books "Machine and Assembly Language programming of the PDP-11", and "Studies in Operating Systems". The OS book looks to be fascinating as it was published in 1976 and has sections on the Burroughs B5500 Master Control Program, CDC Scope 3.2, T.H.E. Multiprogramming System, and the TITAN Supervisor. I didn't find any computers really, just a TRS-80 that was only part there, and a lot of PC clones. Nothing worth bringing home. Zane | Zane H. Healy | UNIX Systems Adminstrator | | healyzh(a)aracnet.com (primary) | Linux Enthusiast | | healyzh(a)holonet.net (alternate) | Classic Computer Collector | +----------------------------------+----------------------------+ | Empire of the Petal Throne and Traveller Role Playing, | | and Zane's Computer Museum. | | http://www.dragonfire.net/~healyzh/ |

25 years, 10 months

Notice to all Mobile Phone Users!

by hhacker＠gte.net

This message constitutes spam, and will not be tolerated. YOU AND YOUR ORGANISATION ARE ORDERED TO IMMEDIATELY REMOVE MY EMAIL ADDRESS FROM YOUR LIST AND TO NEVER AGAIN SEND SUCH EMAIL MESSAGES TO ME, ON PAIN OF FEDERAL PROSECUTION!!! -----Original Message----- From: MobileCostCutter(a)Hotmail.com <MobileCostCutter(a)Hotmail.com> To: Discussion re-collecting of classic computers <classiccmp(a)u.washington.edu> Date: Wednesday, February 10, 1999 6:27 PM Subject: Notice to all Mobile Phone Users! >Hi, > >You have been referred to us as someone that would benefit from >the following information. > >If you are a mobile phone user then you may be interested to >learn about the following. > > >___________________________________________________________ >"Don't pay more for your mobile phone than you have to" >___________________________________________________________ > > >We are an independent mobile phone consultancy based in >Hertfordshire that has been formed as a result of the increased >competition between the UK's four mobile phone networks. Our >team have an extensive and personal understanding of how mobile >phone networks compete for your business. > >Our dedicated team of consultants are available to offer you the >cheapest possible package from your existing mobile phone >operator. > >A number of our colleagues are former employees of one of the >UK's leading mobile phone networks. Their knowledge and expertise >will prove to be a valuabe commodity. > > >1. We will show you how it is possible to reduce your existing >monthly line rental charge by between 10% to 50%. > >2. We will show you how you can upgrade your phone at a >discounted price or in some cases, FREE. > >3. We will show you how to go about obtaining a credit on your >account. > >4. We will show you how it is possible to transfer from one >network to another taking your existing mobile phone >number with you and receiving upto ?100.00 for your trouble. > >5. We will show you how you can take advantage of free local and >national calls day and night. > >6. We will show you how to achieve cheaper international calls. > >7. We will show you how to receive a discounted memorable mobile >number. > >8. We will show you how you can have two numbers running side by >side and pay just one line rental charge. > >______________________________ >This and a whole lot more! >______________________________ > >If you require more information regarding the above and what we >can offer you then please send an e.mail stating your name, >contact number, e.mail address, the network you are with and >length of time you have been with them to >MobileCostCutter(a)Hotmail.com. Alternatively, you can contact us >on 01438 234961 or send a fax to 0171 681-3495. > > >Please forward this e.mail to other mobile phone users you know. > >We look forward to hearing from you! > >Kindest Regards and Best Wishes. > > >Christopher Scott >Managing Director > > > > > > >

25 years, 10 months

5151 monitor

by yakowenk＠cs.unc.edu

Anybody out there want an IBM 5151 monitor? Not yet sure if it works; will test it soon. Cheers, Bill.

25 years, 10 months

C128 disks ?

by black＠gco.apana.org.au

Hope someone can help. I'm after a copy of the CP/M disks that came with a Commodore 128D, on disk rather than a .D64 images, also, if anyone has a copy of Little Red Reader for the C128 on a 1541 or 71 disk, I'd be forever indebted. I'm willing to pay mailing costs to Oz. cheers, Lance

25 years, 10 months

Tek 4050 series (was:Re: Questions on the days finds)

by Philip.Belben＠PowerTech.co.uk

>>> Yes but what's interesting is that the bit-slice 4052 is software >>> compatible with the 6800 powered 4051!!! The 4052 is a 16 bit machine. I'm >>> guessing that Tektronix used the bit slice CPU so that they could retain >>> the same software but gain the power of the 16 bit system. >> >>>From what I recall (looking at Philip's 4052 service docs), the >>instruction set is not identical. There's at least one 6800 instruction >>missing on the 4052. > > That's odd unless they (Tektronix) never used that instruction since they > claim the the 4052 and 4054 will run all the 4051 software. Don't forget that at the user level, the 4050 series were BASIC machines. Any BASIC program that would run on the 4051 would run on the 4052. Some of the BASIC programs that needed ROM cartridges on the 4051 would run on an unexpanded 4052. Talking of BASIC, I think most of the cartridge ROMs were BASIC extensions. > Does the 4052 service manual give that level of detail? The one for the > 4051 gives NO information on the CPU instruction set other than what was in Not much detail, but it explains the addressing modes and lists the instruction set (although it doesn't tell you what the instructions do). It explains the CPU architecture, including the microcode format... > the Motorola 6800 brochure that's included in the manual. Does the 4052 > manual give the entry points of the software routines in the system ROM? Alas, no. Not a thing. I wish it did! > The 4052 and 4054s also have a larger address range and more memory, > that may also be why their ROMs won't work in the 4051. In part. As I said earlier, I think "software compatibility" meant BASIC software. >>At the hardware level, the 4052 is 16 bit. But the microcode implements >>an 8 bit processor - the 16 bit operations are used for calculating >>addresses only. > > I wondered if they were using all 16 bits for data since they could use > the 8 bit 4051 ROMs. The memory management circuitry is a tour de force. Not only does it handle 16 bit fetches on odd and even bytes, it will decide whether you are addressing 8 bit wide or 16 bit wide memory and act accordingly. Really lovely machine. Yes, the 4052 ROM cartridges are 8 bits wide. Philip.

25 years, 10 months

DECMate III development

by allisonp＠world.std.com

<The reason why I picked up the DECMate at all was because many of you are <such fans of the PDP-8 instruction set. What could I use to experience <this wonderful creation ;)? If you can get a tube and keyboard then head to Dbit (john wilsons site) and start downloading everything in sight. OS/278 was part development environment and also applications platform. You to can end up writing in PAL-III (assembler). Allison

25 years, 10 months

Help - S-100 board info needed

by edick＠idcomm.com

The National MM5290's were, essentially, just another version of the 4116, a 16-K-bit 3-voltage dynamic RAM. I've got some doubts about the TMS4045's as well. I think you may be surprised to learn that they are essentially 2114's, (slow 2148's) which are 1kx4 as opposed to 4kx1. The 4kx1 SRAMS (slow 2147's) were 4044's. I doubt you'll have as much trouble fixing that board by unsoldering as you'd have today. Modern boards have large ground and power plane layers which sink heat much better than those old 2-layer boards allowed. There's a good chance that I've got one in the basement. If needed, I can probably identify the parts for you if nothing else. Dick ---------- From: Barry A. Watzman <Watzman(a)ibm.net> To: Discussion re-collecting of classic computers <classiccmp(a)u.washington.edu> Subject: Help - S-100 board info needed Date: Tuesday, February 16, 1999 4:57 PM I need information on two S-100 cards that I have acquired with no manuals. If someone has manuals on these, I'd pay a nominal fee for a copy, but in the meantime I'd like switch and jumper info. Card #1 is a Vector Graphic 64k RAM card. The card uses four rows of National Semiconductor MM5290 chips. There is one dip switch, 8 position, and lots of jumpers. Also, some circuitry that is not populated [U17, U18, U32 and a number of discreet components]. What are the 5290's, are these static or dynamic ? I was presuming it was DRAM, but I was expecting 4 rows of 4116's. Bad news, the memory chips and most of the support chips are soldered and are not socketed, which will be tough to fix if it doesn't work [and for a 20+ year old board, the chances that it works are not that good]. Can anyone help ? Card #2 is a Problem Solver Systems {PSS} Ram 16, a 16k static board with TMS4045 chips [those are 4k x 1 static rams, good chips, I have LOTS of experience with them and even some spare chips]. Two dip switches, one toggle switch and lots of jumpers. Need info. Anyone who can help, thanks in advance ! Regards, Barry Watzman Watzman(a)ibm.net ----------

25 years, 10 months

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test-drb February 1999