Changes
*[[PSG]] cannot be accessed directly as it is behind the PPI. It is simple to emulate though, but it cannot do much.
*[[FDC|765 FDC]] is bloated with 40 pins, compared to 28 pins for the WD1772 FDC used in the [[Atari ST]]. It is also a black box internally, while the [[C64]] uses a regular 6502 (with its own ROM and RAM) as FDC.
And unlike the ZX Spectrum and the MSX, on the Amstrad CPC and Plus things can go catastrophically wrong if bus timings are not accurately emulated.
Thankfully, many tools and tests exist to help emulation authors.
