360 Assembly/360 Instructions/LGR

__TOC__ LGR - Load Register - 64 Bit - Opcode B904 - RRE Instruction Format LGR 2,6 The specific syntax is LGR target register, source register. RRE Instruction (4 bytes)Bytes 1 and 2Byte 3Byte 4target registersource register(16 bits)OpcodeB904(8 bits)Not used(4 bits) 0..F(4 bits)0..F The first argument is a target register which value is affected by the instruction. The second argument is the source value register. Availability The LGR instruction is 64-bit, and is only available on the 370 series and z/System. It will cause an opcode exception on the 360 series. Operation The LGR instruction copies a 64-bit value from the register specified by the second argument to the register specified by the first argument. Condition codes are not changed. Register 0 is valid for either register and is not ignored as in some other instructions. Exceptions and Faults 360 Series: Opcode Exception 370 Series and zSystem: None. LGHR LH B903 LTGR B905 LURAG