SC129, v1.1, Description

SC129 is a digital I/O module designed for RC2014.

The module has the following features:

  • 8 digital inputs with LED indicators
  • 8 digital outputs with LED indicators
  • Header for all inputs and outputs signals
  • Tight configurable address decoding

This module is suitable for connecting to a solderless breadboard with Dupont cables.

The eight inputs and eight outputs are 74HCT series compatible.

The input and output ports are simple devices which require no initialisation, simply read and write with a single assemble instruction or a single BASIC statement.

Address decoding allows the module to be set to any I/O address in the range 0 to 255 (0x00 to 0xFF hexadecimal) and occupies only a single address. Many of these modules can be used at the same time.

Homebrew 8-bit retro computing