Changes
/* PCBs */
Z70378 P.C.B. CPC464 version 3 (german variant)
Z70500 P.C.B. Spectrum+2 issue 3
Z70501 Spectrum +2 Datacorder PCB (full part number Z70501/C3-4494(A) Spectrum +2 Datacorder PCB)
Z70800 P.C.B. PCW9512 (1987)
Z70830 Spectrum +2A/+3 Motherboard (ISSUE 1 & 2 both (c) 1987)
