Strange 6502 trainer

[mba]

Does anyone know what it could be? It uses two Rockwell chips: 6502 and 6522. On the board are labels: "MPS 65-2", "THALER" and "85-1-1". The board was probably made in mid-eighties.

[barrym95838]

Here's an awkward translation from this page:

http://allegro.pl/mps65-6502-microproce ... 26352.html

Quote:

Tile MPS65 to learn programming of the microprocessor 6502. Did not find anything about it on the web.

On the board is written MPS 65-2. At the bottom of the inscription Thaler THALER (the same inscription is in ROM, in addition to the date 84). Systems dating back to the years 1983-1987.

Tile is efficient. It has a 6-digit LED display, a keyboard 24, a push, a microprocessor 6502 (execution Rockwell) VIA 6522 to support the display, keyboard and timers, 2KB ROM monitor program, 2KB RAM 6116 of which the user is available 1.5kB (unless, that do not use the monitor program).

For tiles do not have documentation but no problem I figured how to use it: you can write a new program instructions, view the program forward / reverse, jump into memory at any given address, inserting NOP instructions in the indication of the place of the code (it can be later converted into BRK what will stop program and displaying the contents of registers X, Y and A by monitor - such a simple debugger. program has also monitor watch. buttons S and L are presumably Save and Load. Save probably works because you can see on the serial communication port PB7 the VIA (so that the pin is nowhere connected). Interested remain zdeassemblować program monitor.

I enclose a handwritten fragment pattern of connecting a keyboard and display (and a brief description of how the program the user can take advantage of them, a simple matter). A brief but adequate descriptions of monitor functions.

A piece of history for the collector.

Tile requires a stabilized power supply 5V 0.5A - wire is complete.

Mike

[mba]

I've just bought it here. I'm looking for more detailed information about the board.

[HansO]

mba wrote:

I've just bought it here. I'm looking for more detailed information about the board.

Never seen this one. It looks like one of the many KIM-1 type of machines. I see a 6502, a 6522, an EPROM type 2716, SRAM 6116.And a big DIN connector at the back. The usual keyboard/led display scanning hardware like the KIM-1, the Elektor Junior, MCS Alpha 1 etc have.

What i do not see is any kind of I/O like cassette.
The advertisement talsk about PB7 as serial port, which may mean another pin of the 6522 is also part of a serial port. No connector visible though.

Can you dump the EPROM?

[mba]

EPROM dump is in the attachment. It starts in address space at 0xF800.

[Michael]

I wonder if anyone has found any additional information on this particular SBC? I haven't found anything, so far.

[BigEd]

Thanks for the ROM dump, mba. I see a very similar board is now being discussed over here:
https://stardot.org.uk/forums/viewtopic ... 55&t=16253

[GaBuZoMeu]

My brain isn't that bad ..

I remember some advertisement in the german monthly "mc Die Mikrocomputer-Zeitschrift" (Franzis-Verlag).

This board is a reduced version of the CT-65 from Thaler (Thaler & Co. Mikroprozessor Technik GmbH, Krefeld, Germany) called "MPS-65".

mc-1984-09-58.pdf

brief review of MPS-65

(806.88 KiB) Downloaded 182 times

mc-1984-09-29.pdf

advertisement MPS-65

(1.17 MiB) Downloaded 174 times

mc-1983-04-56.pdf

review of CT-65

(973.94 KiB) Downloaded 156 times

mc-1983-04-28.pdf

advertisement of CT-65

(1.07 MiB) Downloaded 174 times

Sorry guys (and gals) - german only. If required I can translate it.


Regards
Arne

[BigEd]

Nice findings - thanks for sharing!

[bprosman]

Thanks , indeed a nice finding. Translation is not required even though my German might be rusty.
I read that the connector was according to the "Siemens SMP norm", anything known about that ?

[GaBuZoMeu]

Welcome, bprosman!

[bprosman]

I read that the connector was according to the "Siemens SMP norm", anything known about that ?

[GaBuZoMeu]

Sorry, no suitable findings for that "Siemens SMP norm".

It is most likely just one out of a million possible pin assignments for these DIN 41612 (now IEC 60603-2) connectors that were used frequently those days (especially in industrial solutions, Eurocard size boards).

Regards,
Arne

[tanteju]

GaBuZoMeu wrote:

Sorry, no suitable findings for that "Siemens SMP norm".

It is most likely just one out of a million possible pin assignments for these DIN 41612 (now IEC 60603-2) connectors that were used frequently those days (especially in industrial solutions, Eurocard size boards).

If my memory is not completely wrong, the SMP Bus was a predecessor of the SMP 16 Bus, without b row. See https://cache.industry.siemens.com/dl/f ... u066_e.pdf section 5.1.3

There are other signals on a and c, which are not used and if I remember correctly, there had been an article in c't (a German magazine from that time) about that bus.

[HansO]

A summary page on the findings on the Thaler MPS-65 and CT-6502 SBC's here: http://retro.hansotten.nl/6502-sbc/msp-65-2-thaler/