ZZ80MB Rev3, A Z280-based SBC with RC2014 Expansion

ZZ80MB is a Z280-based motherboard with RC2014 expansion slots. It is based on the ZZ80RC-CF design, but with two additional expansion slots added. ZZ80MB is designed with an EPROM programmer function such that it can boot from serial port, load EPROM programming image through the serial port and program an EPROM. This feature can be used to program EPROM for other computers.