Changes
40120 PCW9xxx parallel printer controller ASIC
40226 CPC464/CPC6128 "cost-down" ASIC (ARN4) (combines Gate Array, PAL, CRTC, and some small FDC/DRAM/RESET logic)
40464 CPC+ Triple 4bit DAC (for RGB video)
40489 CPC+ ASIC
40908 CPC+ cartridge protection chip ("ACID")
