|
IBM DBA-ESDI Connector (Model 50, 55, 70, P70, 90, 5560)
IBM SCSI Pinouts (Most later PS/2s)
XT-Bus (8-bit) IDE Connector
IBM XT Bus IDE Connector (Model 25 and 30)
ATA Connector (Lacuna, 9533, 9553)
XT-Bus (8-bit) IDE Connector
| Pin | Signal | Pin | Signal |
|---|
| 1 | -RESET | 2 | Ground |
| 3 | Data Bit 7 | 4 | Ground |
| 5 | Data Bit 6 | 6 | Ground |
| 7 | Data Bit 5 | 8 | Ground |
| 9 | Data Bit 4 | 10 | Ground |
| 11 | Data Bit 3 | 12 | Ground |
| 13 | Data Bit 2 | 14 | Ground |
| 15 | Data Bit 1 | 16 | Ground |
| 17 | Data Bit 0 | 18 | Ground |
| 19 | Ground | 20 | Key (Missing pin) |
| 21 | AEN | 22 | Ground |
| 23 | -IOW | 24 | Ground |
| 25 | -IOR | 26 | Ground |
| 27 | -DACK 3 | 28 | Ground |
| 29 | DRQ 3 | 30 | Ground |
| 31 | IRQ 5 | 32 | Ground |
| 33 | Address Bit 1 | 34 | Ground |
| 35 | Address Bit 0 | 36 | Ground |
| 37 | -CS1FX | 38 | Ground |
| 39 | -Drive Active | 40 | Ground |
IBM XT-Bus IDE Connector (PS/2 Model 25 and 30)
| Pin | Signal | Pin | Signal |
|---|
| 1 | -RESET | 2 | -Disk Installed |
| 3 | Data Bit 0 | 4 | Ground |
| 5 | Data Bit 1 | 6 | Ground |
| 7 | Data Bit 2 | 8 | Ground |
| 9 | Data Bit 3 | 10 | Ground |
| 11 | Data Bit 4 | 12 | Ground |
| 13 | Data Bit 5 | 14 | Ground |
| 15 | Data Bit 6 | 16 | Ground |
| 17 | Data Bit 7 | 18 | Ground |
| 19 | -IOR | 20 | Ground |
| 21 | -IOW | 22 | Ground |
| 23 | -CS1FX | 24 | Ground |
| 25 | Address Bit 0 | 26 | Ground |
| 27 | Address Bit 1 | 28 | Ground |
| 29 | Address Bit 2 | 30 | +5 Vdc |
| 31 | Reserved | 32 | +5 Vdc |
| 33 | -DACK 3 | 34 | Ground |
| 35 | DRQ 3 | 36 | Ground |
| 37 | IRQ 5 | 38 | Ground |
| 39 | I/O CH RDY | 40 | +12 Vdc |
| 41 | Spare | 42 | +12 Vdc |
| 43 | Spare | 44 | +12 Vdc |
ATA Connector (Lacuna, 9533, 9553)
| Pin | Signal | Pin | Signal |
|---|
| 1 | -RESET | 2 | Ground |
| 3 | Data Bit 7 | 4 | Data Bit 8 |
| 5 | Data Bit 6 | 6 | Data Bit 9 |
| 7 | Data Bit 5 | 8 | Data Bit 10 |
| 9 | Data Bit 4 | 10 | Data Bit 11 |
| 11 | Data Bit 3 | 12 | Data Bit 12 |
| 13 | Data Bit 2 | 14 | Data Bit 13 |
| 15 | Data Bit 1 | 16 | Data Bit 14 |
| 17 | Data Bit 0 | 18 | Data Bit 15 |
| 19 | Ground | 20 | Key (Missing pin) |
| 21 | DRQ 3 | 22 | Ground |
| 23 | -IOW | 24 | Ground |
| 25 | -IOR | 26 | Ground |
| 27 | I/O CH RDY | 28 | SPSYNC:CSEL |
| 29 | -DACK 3 | 30 | Ground |
| 31 | IRQ14 | 32 | -IOCS16 |
| 33 | Address Bit 1 | 34 | -PDIAG |
| 35 | Address Bit 0 | 36 | Address Bit 2 |
| 37 | -CS1FX | 38 | -CS3FX |
| 39 | -DA/SP | 40 | Ground |
| 41 | +5 Vdc (Logic) | 42 | +5 Vdc (Motor) |
| 43 | Ground | 44 | -Type (0=ATA) |
|