Auxiliary Feature Register
| IMPLEMENTATION_DEFINED0 | Gives information about the IMPLEMENTATION DEFINED features of a processor implementation. |
| IMPLEMENTATION_DEFINED1 | Gives information about the IMPLEMENTATION DEFINED features of a processor implementation. |
| IMPLEMENTATION_DEFINED2 | Gives information about the IMPLEMENTATION DEFINED features of a processor implementation. |
| IMPLEMENTATION_DEFINED3 | Gives information about the IMPLEMENTATION DEFINED features of a processor implementation. |