I’ve built Tom Szolyga’s SBC version C.

The build went well and I’ve versioned the Small Computer Monitor to work with it.

Details of Tom’s single board computer can be found here.

This neat little SBC runs CP/M.

It has a Z80 processor, two serial ports (via a Z80 SIO), up to 64k bytes of ROM and 64k bytes of usable RAM. It has an 8-bit IDE port for connection of a Compact Flash module, providing the storage to run CP/M.

The Small Computer Monitor supports this SBC and includes a CP/M loader for use with a Compact Flash module.