Strange 6502 trainer
Posted: Wed Jul 30, 2014 7:36 pm
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.
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.
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.
