RM550C-E


Hi Res Version (910 x 720)

512K RAM Expansion for the A500 which plugs into the trapdoor port. It also includes a battery backed up clock. The wires shown in the top right hand corner of the board, went to a switch in external housing which let the user switch off the memory if required. Probably for compatibility reasons with old games.

Thanks to Popp Konrad and Eric Bailey