David Empson schrieb: > 4. You need the special "piggyback" version of the Z8 CPU, i.e. one > which accepts an EPROM plugged in on top of it. > Today it is quite impossible to get Z8-02 piggibacks. You can use a Z8 In-Circuit emulator from Zilog (available through Farnell, RS Components etc) instead. These units are rather expensive, but available. Patrick