Level Select Register
| P0 | Level Interrupt Selection. |
| P1 | Level Interrupt Selection. |
| P2 | Level Interrupt Selection. |
| P3 | Level Interrupt Selection. |
| P4 | Level Interrupt Selection. |
| P5 | Level Interrupt Selection. |
| P6 | Level Interrupt Selection. |
| P7 | Level Interrupt Selection. |
| P8 | Level Interrupt Selection. |
| P9 | Level Interrupt Selection. |
| P10 | Level Interrupt Selection. |
| P11 | Level Interrupt Selection. |
| P12 | Level Interrupt Selection. |
| P13 | Level Interrupt Selection. |
| P14 | Level Interrupt Selection. |
| P15 | Level Interrupt Selection. |
| P16 | Level Interrupt Selection. |
| P17 | Level Interrupt Selection. |
| P18 | Level Interrupt Selection. |
| P19 | Level Interrupt Selection. |
| P20 | Level Interrupt Selection. |
| P21 | Level Interrupt Selection. |
| P22 | Level Interrupt Selection. |
| P23 | Level Interrupt Selection. |
| P24 | Level Interrupt Selection. |
| P25 | Level Interrupt Selection. |
| P26 | Level Interrupt Selection. |
| P27 | Level Interrupt Selection. |
| P28 | Level Interrupt Selection. |
| P29 | Level Interrupt Selection. |
| P30 | Level Interrupt Selection. |
| P31 | Level Interrupt Selection. |