CA80

Computer compatible with the software of the best Polish educational computer of the 1980s and 1990s.

Hardware

The computer consists of RC80 standard modules.

CA80-CPU module.

Includes processor and memory.

CA80-SYS-I/O module.

Contains system interfaces:

• keyboard,
• display,
• and tape recorder.

MIK89 module.

The original only included the i8255 and Z80 CTC.

• CLK was originally 4 MHz.
• NMI is the computer's most important signal. In the original it was 500 Hz and that's what it should always be. https://www.youtube.com/watch?v=amFPMQ4f2Og.