| DSub | IDC | |
|---|---|---|
| Request | 1 | 48 |
| Message | 2 | 42 |
| Input/Output | 3 | 50 |
| Reset | 4 | 40 |
| Acknowledge | 5 | 38 |
| Busy | 6 | 36 |
| Data Bus 0 | 8 | 2 |
| Data Bus 3 | 10 | 8 |
| Data Bus 5 | 11 | 12 |
| Data Bus 6 | 12 | 14 |
| Data Bus 7 | 13 | 16 |
| Control/Data | 15 | 46 |
| Attention | 17 | 32 |
| Select | 19 | 44 |
| Data Parity | 20 | 18 |
| Data Bus 1 | 21 | 4 |
| Data Bus 2 | 22 | 6 |
| Data Bus 4 | 23 | 10 |
| Termination Power | 25 | 26 |
