this is a cp/net client and server for the Retrobrew Mark IV running cp/m 3.
the underlying software is the excellent RomWBW firmware, and the hardware is a speedy Z180 with 512K ram, 512K rom, and it runs at 38 mhz.
the network hardware is an ESP-01 module grafted to the board in place of a otherwise useless RS-425 serial port.
https://sites.google.com/a/zen-room.org/home/the-zen-room/mark-iv-wifi
Status: Read works, at 230400 baud. write data integrity is hopeless.
this work is derived from:
https://github.com/durgadas311/cpnet-z80
and
https://github.com/hperaza/cpnet-server
it differs in that it is all buildable, and it's very compact