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Amstrad CPC 664: Revision history

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23 September 2026

  • curprev 20:2020:20, 23 September 2026 Josh talk contribs 11,967 bytes −2,836 Major corrections against Amstrad's own service manual: the board is Z70205 MC0005A/B, not Z70200 (a 464 board); the OS ROM is part 40022 at IC103, not 40012 (which is IC211, a 74LS27); the Gate Array is the 40010, not 40007/40226; the drive is a Matsushita EME-150A on PCB 30001, not a Hitachi HD3.5R-1; Amstrad's own disc capacities are SYSTEM 169 KB, DATA 178 KB, IBM 154 KB; the display is not interlaced and there is no 400-line mode; DC jack is J301 and the 5-pin DIN J302 is the cassette so... undo

21 May 2026

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