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