* Zilog Z0840004PSC [https://www.cpcwiki.eu/imgs/8/88/CPC464_MC0044B_PCB_Top.jpg Source]
All the Z80 CPUs that have been used by Amstrad on CPC and Plus machines are NMOS. [https://www.cpcwiki.eu/forum/amstrad-cpc-hardware/z80-cpu-nmos-or-cmos/ Source]
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