TRCIDR8 Trace ID Register 8 when FEAT_ETE is implemented and FEAT_TRC_EXT is implemented ETE 0x180 TRCIDR8 When OSLockStatus() or !IsTraceCorePowered() ERROR RO TRCIDR8 Architectural AArch64 31 0 31 0 31 0 31 0 Returns the maximum speculation depth of the instruction trace element stream. Trace TRCIDR8 is a 32-bit register. MAXSPEC 31 0 31:0 Indicates the maximum speculation depth of the instruction trace element stream. This is the maximum number of P0 elements in the trace element stream that can be speculative at any time. This field has an IMPLEMENTATION DEFINED value. RO 2026-03-26 20:27:25 2026-03_rel