* [[ACU Romboard (DIY)|ACU Romboard]] (DIY) ([[Phil Craven]]/[[Amstrad Computer User|ACU]])
* [[ACU Romchanger]] (DIY) ([[Phil Craven]]/[[Amstrad Computer User|ACU]]) - a CPC6128 ROM (BIOS v3, BASIC v1.1) upgrade for the CPC464
* [[AD1 ROM Cartridge]] ([[Arnor]])
* [[AMRAM]] ([[Silicon Systems]])