Standard 8 inch Floppy Disk Interface pinout (only relevant pins named).
All signals active-low.
Gnd | 1 | o | o | 2 | |
Gnd | 3 | o | o | 4 | |
Gnd | 5 | o | o | 6 | |
Gnd | 7 | o | o | 8 | |
Gnd | 9 | o | o | 10 | |
Gnd | 11 | o | o | 12 | |
Gnd | 13 | o | o | 14 | Side select |
Gnd | 15 | o | o | 16 | |
Gnd | 17 | o | o | 18 | |
Gnd | 19 | o | o | 20 | Index |
Gnd | 21 | o | o | 22 | Ready |
Gnd | 23 | o | o | 24 | |
Gnd | 25 | o | o | 26 | Drive select 1 |
Gnd | 27 | o | o | 28 | Drive select 2 |
Gnd | 29 | o | o | 30 | Drive select 3 |
Gnd | 31 | o | o | 32 | Drive select 4 |
Gnd | 33 | o | o | 34 | Dir select |
Gnd | 35 | o | o | 36 | Step |
Gnd | 37 | o | o | 38 | Write Data |
Gnd | 39 | o | o | 40 | Write Gate |
Gnd | 41 | o | o | 42 | Track 00 |
Gnd | 43 | o | o | 44 | Write Prot |
Gnd | 45 | o | o | 46 | Read Data |