SC104, v1.0, Description

Here’s the second in my set of Z80 peripheral chip modules designed for RC2014.

This module houses a Z80 SIO/2 chip and provides two TTL serial ports for use with FTDI style serial adapter cables.

SC104 Assembled

The main features of this module are:

  • Full Z80 mode 2 interrupt support (IEI/IEO daisy-chain)
  • Compatibility option for both register orders used by RC2014
  • Two TTL serial ports for use with FTDI serial adapter cables
  • Source of bus clock (option) to potentially reduce board count
  • On-board clock option to make it independent of the CPU clock
  • Baud rate controllable in software when used with SC102 Z80 CTC

Homebrew 8-bit retro computing