Signal assignments for the NuBus row B listed below.
Refer here for NuBus Signal assignments row A, or NuBus Signal pin out row C
| Pin # | Signal Name | Description |
|---|---|---|
| 1 | -12 V | -12 VDC |
| 2 | GND | Ground |
| 3 | GND | Ground |
| 4 | +5 V | +5 VDC |
| 5 | +5 V | +5 VDC |
| 6 | +5 V | +5 VDC |
| 7 | +5 V | +5 VDC |
| 8 | * | Reserved |
| 9 | * | Reserved |
| 10 | * | Reserved |
| 11 | * | Reserved |
| 12 | GND | Ground |
| 13 | GND | Ground |
| 14 | GND | Ground |
| 15 | GND | Ground |
| 16 | GND | Ground |
| 17 | GND | Ground |
| 18 | GND | Ground |
| 19 | GND | Ground |
| 20 | GND | Ground |
| 21 | GND | Ground |
| 22 | GND | Ground |
| 23 | GND | Ground |
| 24 | ** | Reserved |
| 25 | ** | Reserved |
| 26 | ** | Reserved |
| 27 | ** | Reserved |
| 28 | +5 V | +5 VDC |
| 29 | +5 V | +5 VDC |
| 30 | GND | Ground |
| 31 | GND | Ground |
| 32 | +12 V |
The slash before each of the signal names indicate that the line is active low.
Back to the main NuBus page for a bus description.
This interface is obsolete and should not be used in new designs.
Additional pinout tables for Apple protocols are listed on Apple Computer Buses.
