Spectrum ports also existed on [[MSX]], Enterprise and C64.
Most of them got their graphic totally unchanged, displaying some kind of colour attributes "artifacts", a tell-tale sign of a Speccy port.
This phenomenon was more prominent in the UK, where the Speccy was the dominant machine. In other markets, such as France of Spain, where the CPC was very popular, games were coded from scratch for the CPC, often using an [[Atari|Atari ST]] for [[Games Crossdev|Cross Development]]
The Amstrad's screen can be reduced in size to match the Spectrum's (256x192). Normal display size on Amstrad is 320x200.
Spectrum (128K model and later) and Amstrad both have an AY-3-8912 sound chip.
Spectrum 48K had a 1-bit beeper sound.
The Spectrum's bitmapped display is comparable to Amstrad's mode 1 bitmapped display.
Interestingly, games in Mode 1 could have been good despite the lack of colours, if only those colours were used properly more often.
Most of them got their graphic totally unchanged, displaying some kind of colour attributes "artifacts", a tell-tale sign of a Speccy port.
On a more positive tone, those speccy ports had the merit to exist, or else Amstrad may have a smaller games catalogue.