I/O Map
The following table lists the main I/O definitions of the MCDS.
| Q |
Video Terminal: serial output |
| EF1 | Printer ready |
| EF2 | Cassette in |
| EF4 | VT, serial input |
| OUT 1 |
Set I/O group I/O group 1: VT (Video Terminal) & Printer I/O group 2: Tape |
| OUT 4 | Group 2: Bit 0: 1: record, 0: play, bit 6: Tape motor cassette 0, bit 7 tape motor cassette 1 |
| OUT 5 | Group 2: Cassette out |
| OUT 6 | Group 1: Printer data out |
| INP 1 | Read I/O group |