MOVN Move wide with NOT This instruction moves the inverse of an optionally-shifted 16-bit immediate value to a register. This instruction is used by the alias MOV (inverted wide immediate) !(IsZero(imm16) && hw != '00') && !IsOnes(imm16) !(IsZero(imm16) && hw != '00') See below for details of when the alias is preferred. 0 0 1 0 0 1 0 1 0 0 MOVN <Wd>, #<imm>{, LSL #<shift>} 1 MOVN <Xd>, #<imm>{, LSL #<shift>} if sf == '0' && hw[1] == '1' then EndOfDecode(Decode_UNDEF); end; let d : integer = UInt(Rd); let datasize : integer{} = 32 << UInt(sf); let imm : bits(16) = imm16; let pos : integer{} = UInt(hw) << 4; <Wd> Is the 32-bit name of the general-purpose destination register, encoded in the "Rd" field. <imm> Is the 16-bit unsigned immediate, in the range 0 to 65535, encoded in the "imm16" field. <shift> For the "32-bit" variant: is the amount by which to shift the immediate left, either 0 (the default) or 16, encoded in the "hw" field as <shift>/16. <shift> For the "64-bit" variant: is the amount by which to shift the immediate left, either 0 (the default), 16, 32 or 48, encoded in the "hw" field as <shift>/16. <Xd> Is the 64-bit name of the general-purpose destination register, encoded in the "Rd" field. Alias Conditions var result : bits(datasize) = Zeros{}; result[pos+15:pos] = imm; X{datasize}(d) = NOT(result); 2026-03-12 12:23:09 2025-09_rel_asl1