Standard 3.5 / 5.25 inch Floppy Disk Interface pinout.
All signals active-low.
| Gnd | 1 | o | o | 2 | TG43 |
| Gnd | 3 | o | o | 4 | |
| Gnd | 5 | o | o | 6 | |
| Gnd | 7 | o | o | 8 | Index |
| Gnd | 9 | o | o | 10 | Drive 0 |
| Gnd | 11 | o | o | 12 | Drive 1 |
| Gnd | 13 | o | o | 14 | |
| Gnd | 15 | o | o | 16 | Head Load |
| Gnd | 17 | o | o | 18 | Step in |
| Gnd | 19 | o | o | 20 | Step |
| Gnd | 21 | o | o | 22 | WRT Data |
| Gnd | 23 | o | o | 24 | Write Gate |
| Gnd | 25 | o | o | 26 | Track 00 |
| Gnd | 27 | o | o | 28 | Write Prot |
| Gnd | 29 | o | o | 30 | Raw Data |
| Gnd | 31 | o | o | 32 | Side 1 |
| Gnd | 33 | o | o | 34 | Ready |