| Bits | Meaning |
|---|---|
| 0-7 | 16 (&10) |
| 8-15 | 1 = cursor/system/sound |
| 2 = IRQ stack | |
| 3 = SVC stack | |
| 4 = ABT stack | |
| 5 = UND stack | |
| 6 = Soft CAM | |
| 7 = Level 1 page tables | |
| 8 = Level 2 page tables | |
| 9 = HAL workspace | |
| 10 = Kernel buffers | |
| 11 = HAL uncacheable workspace | |
| All other bits are reserved, and must be zero | |