HLT Halt instruction This instruction can generate a Halt Instruction debug event, which causes entry into Debug state. Within a guarded memory region, while PSTATE.BTYPE != 0b00, an HLT instruction that would cause entry into Debug state will not generate a Branch Target exception and will cause entry into Debug state as normal. For more information, see PSTATE.BTYPE. 1 1 0 1 0 1 0 0 0 1 0 0 0 0 0 0 HLT #<imm> if EDSCR().HDE == '0' || !HaltingAllowed() then EndOfDecode(Decode_UNDEF); elsif IsFeatureImplemented(FEAT_BTI) then SetBTypeCompatible(TRUE); end; <imm> Is a 16-bit unsigned immediate, in the range 0 to 65535, encoded in the "imm16" field. let is_async : boolean = FALSE; let fault : FaultRecord = NoFault(); Halt(DebugHalt_HaltInstruction, is_async, fault); 2026-03-12 12:23:09 2025-09_rel_asl1