register EIRR
| ER0 | bitfield ER0 |
| ER1 | bitfield ER1 |
| ER2 | bitfield ER2 |
| ER3 | bitfield ER3 |
| ER4 | bitfield ER4 |
| ER5 | bitfield ER5 |
| ER6 | bitfield ER6 |
| ER7 | bitfield ER7 |
| ER8 | bitfield ER8 |
| ER9 | bitfield ER9 |
| ER10 | bitfield ER10 |
| ER11 | bitfield ER11 |
| ER12 | bitfield ER12 |
| ER13 | bitfield ER13 |
| ER14 | bitfield ER14 |
| ER15 | bitfield ER15 |
| ER16 | bitfield ER16 |
| ER17 | bitfield ER17 |
| ER18 | bitfield ER18 |
| ER19 | bitfield ER19 |
| ER20 | bitfield ER20 |
| ER21 | bitfield ER21 |
| ER22 | bitfield ER22 |
| ER23 | bitfield ER23 |
| ER24 | bitfield ER24 |
| ER25 | bitfield ER25 |
| ER26 | bitfield ER26 |
| ER27 | bitfield ER27 |
| ER28 | bitfield ER28 |
| ER29 | bitfield ER29 |
| ER30 | bitfield ER30 |
| ER31 | bitfield ER31 |