* [[Firmware|CPC 464 OS]] (19851984)([[Amstrad|Amstrad]])
* [[Firmware|CPC 464 Modified OS]] (19xx)(Da)
* [[Firmware|CPC 664 OS]] (1985)([[Amstrad|Amstrad]])
* [[Firmware|CPC 464+ and 6128+ OS]] (1991)([[Amstrad|Amstrad]] - [[Locomotive_Software|Locomotive]])
* CPC 464+ Plus A2 (1991)([[Amstrad|Amstrad]] - [[Locomotive_Software|Locomotive]])
* [[Firmware|CPC 6128 OS English]] (1985)([[Amstrad|Amstrad]] - [[Locomotive_Software|Locomotive]])
* [[Firmware|CPC 6128 OS French]] (1985)([[Amstrad|Amstrad]] - [[Locomotive_Software|Locomotive]])
* [[Firmware|CPC 6128 OS Spanish]] (1985)([[Amstrad|Amstrad]] - [[Locomotive_Software|Locomotive]])
* [[CPC FutureOS lower ROM|CPC FutureOS lower ROM]] (2012) ([[FutureSoft|FutureSoft]])
=== BASIC ROMs ===