TRCIDR0
| RES1 | Reserved, RES1 |
| INSTP0 | reads as `ImpDef |
| TRCDATA | reads as `ImpDef |
| TRCBB | reads as `ImpDef |
| TRCCOND | reads as `ImpDef |
| TRCCCI | reads as `ImpDef |
| RETSTACK | reads as `ImpDef |
| NUMEVENT | reads as `ImpDef |
| CONDTYPE | reads as `ImpDef |
| QFILT | reads as `ImpDef |
| QSUPP | reads as `ImpDef |
| TRCEXDATA | reads as `ImpDef |
| TSSIZE | reads as `ImpDef |
| COMMOPT | reads as `ImpDef |