The '''PC interface''' connects to ISA bus, and contains a [[8255 PPI chip]], five logic chips, and two 2x8pin connectors, allowing to connect to up to two slave computers.
The CPC needs to execute [[PDS download source code]], for communicatiing with the debugger, and for loading games via cable rather than from tape or disc.
''Not 100% sure if above describes the original PC/CPC interfaces - or if that are homebrew remakes (?)''