Data for the Intel OEM boards: 80/10 80/10A 80/10B 80/20 80/20-4 80/24 80/30 CPU 8080A 8080A 8080A 8080A 8080A 8085 8085A PF N/A N/A N/A D4 D4 D4 N/A SBO N/A N/A N/A D5 D5 D5 N/A LED N/A N/A N/A D6 D6 D6 N/A 8251 EC EC EC EC EC EC EC 8253 N/A N/A N/A DC DC DC DC 8255 E4/E8 E4/E8 E4/E8 E4/E8 E4/E8 E4/E8 E8 8741 N/A N/A N/A N/A N/A N/A E4 8259 N/A N/A N/A D8 D8 D8 D8 ROM-1K 0-03FF 0-03FF 0-03FF 0-03FF 0-03FF 0-03FF 0-03FF ROM-2K 0-07FF 0-07FF 0-07FF 0-07FF 0-07FF 0-07FF 0-07FF ROM-4K 0-0FFF 0-0FFF 0-0FFF 0-0FFF 0-0FFF 0-0FFF 0-0FFF ROM-8K N/A 0-1FFF 0-1FFF 0-1FFF 0-1FFF 0-1FFF 0-1FFF ROM-16K N/A N/A 0-3FFF N/A N/A 0-3FFF N/A ROM-32K N/A N/A N/A N/A N/A 0-7FFF N/A RAM-1K 3C00-3FFF 3C00-3FFF 3C00-3FFF N/A N/A N/A N/A RAM-2K N/A N/A N/A 3800-3FFF N/A 3800-3FFF N/A RAM-4K N/A N/A N/A N/A 3000-3FFF 3000-3FFF N/A RAM-8K N/A N/A N/A N/A N/A 2000-3FFF 2000-3FFF RAM-16K N/A N/A N/A N/A N/A N/A 4000-7FFF MM1-MCS0 N/A N/A F0 C0 N/A C0 N/A MM1-MCS1 N/A N/A F8 C8 N/A C8 N/A MM2-MCS0 N/A N/A N/A F0 N/A F0 N/A MM2-MCS0 N/A N/A N/A F8 N/A FF N/A