TRCIMSPEC<n> Trace IMP DEF Register <n> when an implementation implements TRCIMSPEC<n>, FEAT_ETE is implemented, and FEAT_TRC_EXT is implemented 1 7 ETE 0x1C0 + (4 * n) TRCIMSPEC<n> When OSLockStatus(), or !AllowExternalTraceAccess(addrdesc), or !IsTraceCorePowered() ERROR RW TRCIMSPEC<n> Architectural AArch64 31 0 31 0 31 0 31 0 These registers might return information that is specific to an implementation, or enable features specific to an implementation to be programmed. The product Technical Reference Manual describes these registers. Trace TRCIMSPEC<n> is a 32-bit register. IMPLEMENTATION DEFINED 31 0 31:0 IMPLEMENTATION DEFINED. This field reads as an IMPLEMENTATION DEFINED value and writes to this field have IMPLEMENTATION DEFINED behavior. 2026-03-26 20:27:25 2026-03_rel