||[[Firmware|CPC 464 OS]]||1984||[[Amstrad|Amstrad]] - [[Locomotive_Software|Locomotive]]||||1||lower ROM|| [[Media:OS_464.zip|CPC 464 OS ROM]]
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||[[Firmware|CPC 464 Modified OS]]||19xx|| ? ||Commodore 64 replica ROMs||1||lower ROM|| Link Required[[Media:C64_replica_ROMs.zip|C64 replica ROMs]]
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||[[Firmware|CPC 664 OS]]||1985||[[Amstrad|Amstrad]] - [[Locomotive_Software|Locomotive]]||||1||lower ROM|| [[Media:OS_664.zip|CPC 664 OS ROM]]