SFD-1001 Parts Location Part Number Description 7G, 9G 2116 (2) 2K x 8 static RAM DOS: 1J 901887-01 2364 ROM DOS 2.7 C000-DFFF 3J 901887-02 2364 ROM DOS 2.7 E000-FFFF 3J 901888-01 2364 ROM DOS 2.7 E000-FFFF 2H 6502 CPU 4J, 6J 6532 (2) RIOT Controller: 5C 901467-01 6316-017 ROM GCR 1E 6502 CPU 5E 6522 VIA 3E 251232 adapter board drive Matsushita JU-570-2 Adapter Board: U2 251257-02A 2716 EPROM controller U1 6530 RIOT (ROM disabled)