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Table of Contents
ZZ80MB Rev3, A Z280-based SBC with RC2014 Expansion
Introduction
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. Rev3 corrected a Z280 hardware bug in ZZ80MB rev2.
Features
- Z280 CPU configured to Z80-compatible mode running at 24MHz with bus speed of 12 MHz
- 1/2 megbyte of RAM
- 1/2 megabyte of EPROM
- Two modes of operation,
- Serial bootstrap mode, loading files from serial port,
- EPROM bootstrap mode.
- CP/M 2.2 and CP/M 3 ready.
- CF interface supports 4 CF drives
- 3 RC2014 expansion slots
- One internal UART at 115200 baud, odd parity, no handshake
- bootstrap to ZZ80Mon, a simple monitor
- A standalone single-board computer with I/O expansion bus compatible with RC2014 I/O bus
- Economical 2-layer 102mm X 102mm pc board.
