| Description | D-Sub | IDC |
|---|---|---|
| Drive Reset | 1 | 1 |
| Data bit 0 | 2 | 17 |
| Data bit 2 | 3 | 13 |
| Data bit 4 | 4 | 9 |
| Data bit 6 | 5 | 5 |
| Ground | 6 | 2 |
| Data bit 8 | 7 | 4 |
| Data bit 10 | 8 | 8 |
| Data bit 12 | 9 | 12 |
| Data bit 14 | 10 | 16 |
| Ground | 11+12 | 19 |
| Ground | 13+14 | 22 |
| Ground | 15+16 | 24 |
| Ground | 17 | 26 |
| 5V Power | 18 | n/c |
| 5V Power | 19 | n/c |
| Ground | 20 | 30 |
| Data bit 1 | 21 | 21 |
| Data bit 3 | 22 | 22 |
| Data bit 5 | 23 | 23 |
| Data bit 7 | 24 | 24 |
| Ground | 25 | 40 |
| Data bit 9 | 26 | 26 |
| Data bit 11 | 27 | 27 |
| Data bit 13 | 28 | 28 |
| Data bit 15 | 29 | 29 |
| I/O Write | 30 | 23 |
| I/O Read | 31 | 25 |
| Interrupt Request | 32 | 31 |
| Address bit 2 | 33 | 36 |
| Address bit 1 | 34 | 33 |
| Address bit 0 | 35 | 35 |
| Chip Select 1 | 36 | 38 |
| Chip Select 0 | 37 | 37 |
