SC504, v1.0, Description

SC504 is a Compact Flash interface designed for Z50Bus.

This card provides an 8-bit IDE interface via a 40-pin male header. In theory, you could connect other IDE devices, not just the recommended Compact Flash adapter module (shown right).

As this is a very simple interface, which uses the processor bus directly, without buffering, the IDE interface should not be extended for than a few inches and only carefully selected devices should be connected. In general, it is best to only use this interface to connect a Compact Flash card.

The card has the following features:

  • Z50Bus compatible (“Standard” card size 100mm x 75mm, but with a cut-out for the Compact Flash adapter module)
  • Tight address decoding
  • Flexible I/O address selection
  • Optional power to IDE connector
  • Activity LED

Homebrew 8-bit retro computing