| Solder side Signal Name |
Pin | Component side Signal Name |
|||
| GND | --- | B1 | A1 | --> | !I/O CH CK |
| RESET DRV | --> | B2 | A2 | <-> | SD7 |
| Plus5V | --> | B3 | A3 | <-> | SD6 |
| IRQ 9 | <-- | B4 | A4 | <-> | SD5 |
| Minus5V | --> | B5 | A5 | <-> | SD4 |
| DRQ2 | <-- | B6 | A6 | <-> | SD3 |
| Minus12V | --> | B7 | A7 | <-> | SD2 |
| !0WS | <-- | B8 | A8 | <-> | SD1 |
| Plus12V | --> | B9 | A9 | <-> | SD0 |
| GND | --- | B10 | A10 | --> | I/O CH RDY |
| !SMEMW | --> | B11 | A11 | <-- | AEN |
| !SMEMR | --> | B12 | A12 | <-- | SA19 |
| !IOW | --> | B13 | A13 | <-- | SA18 |
| !IOR | --> | B14 | A14 | <-- | SA17 |
| !DACK3 | --> | B15 | A15 | <-- | SA16 |
| DRQ3 | <-- | B16 | A16 | <-- | SA15 |
| !DACK1 | --> | B17 | A17 | <-- | SA14 |
| DRQ1 | <-- | B18 | A18 | <-- | SA13 |
| !REFRESH | --> | B19 | A19 | <-- | SA12 |
| CLK | --> | B20 | A20 | <-- | SA11 |
| IRQ7 | <-- | B21 | A21 | <-- | SA10 |
| IRQ6 | <-- | B22 | A22 | <-- | SA9 |
| IRQ5 | <-- | B23 | A23 | <-- | SA8 |
| IRQ4 | <-- | B24 | A24 | <-- | SA7 |
| IRQ3 | <-- | B25 | A25 | <-- | SA6 |
| !DACK2 | --> | B26 | A26 | <-- | SA5 |
| TC | --> | B27 | A27 | <-- | SA4 |
| BALE | --> | B28 | A28 | <-- | SA3 |
| Plus5V | --> | B29 | A29 | <-- | SA2 |
| OSC | --> | B30 | A30 | <-- | SA1 |
| GND | --- | B31 | A31 | <-- | SA0 |
| Key gap equivalent to 3 pins | |||||
| !MEM CS16 | <-- | D1 | C1 | <-- | !SBHE |
| !IO CS16 | <-- | D2 | C2 | <-- | LA23 |
| IRQ10 | <-- | D3 | C3 | <-- | LA22 |
| IRQ11 | <-- | D4 | C4 | <-- | LA21 |
| IRQ12 | <-- | D5 | C5 | <-- | LA20 |
| IRQ15 | <-- | D6 | C6 | <-- | LA19 |
| IRQ14 | <-- | D7 | C7 | <-- | LA18 |
| !DACK0 | --> | D8 | C8 | <-- | LA17 |
| DRQ0 | <-- | D9 | C9 | <-- | !MEMR |
| !DACK5 | --> | D10 | C10 | <-- | !MEMW |
| DRQ5 | <-- | D11 | C11 | <-> | SD08 |
| !DACK6 | --> | D12 | C12 | <-> | SD09 |
| DRQ6 | <-- | D13 | C13 | <-> | SD10 |
| !DACK7 | --> | D14 | C14 | <-> | SD11 |
| DRQ7 | <-- | D15 | C15 | <-> | SD12 |
| Plus5V | --> | D16 | C16 | <-> | SD13 |
| !MASTER | <-- | D17 | C17 | <-> | SD14 |
| GND | --- | D18 | C18 | <-> | SD15 |
Shown looking down onto motherboard, back of PC at the top.
Arrows indicate signal directions for typical slave board.