Changes
/* PCBs */ Added reference to Z70270 board
Z70217 P.C.B. CTM644 colour monitor cathode ray tube
Z70221 CPC6128 Keyboard Assembly (English) (ribbon cable connectors)
Z70270 P.C.B. CPC6128 version 1, MC0016x (1985) (centronics variant)
Z70290 P.C.B. CPC6128 version 2, MC0020x (1985) (one variant)
Z70290 P.C.B. CPC6128 version 2, MC0023x (1985) (german variant)
