Looking back 80's and 90's

This is a CP/M machine that is currently (2020') available. SC-131 is a Z180 based computer box that emulates Z80 computer. Serial interface is provided to connect to terminal or terminal emulator and it is powered by ROMBWB firmware.

Z180 CPU running at 18.432 MHz
512k byte RAM
512k byte Flash containing RomWBW
Two asynchronous serial ports
Micro SD card slot for storage
Voltage supervisor
USB to serial adapter and cables
Small neat case

The unit is designed and sold by Stephen C Cousins in United Kingdom, available through Tindie.com.

Mr. Cousin's website