IAR Embedded Workbench for RX 5.20IAR AssemblerAssembler operatorsDescription of assembler operatorsBYTE4 Fourth byteBYTE4 Fourth byteIn this section: Precedence2DescriptionBYTE4 takes a single operand, which is interpreted as an unsigned 32-bit integer value. The result is the high byte (bits 31 to 24) of the operand.ExampleBYTE4 0x12345678 –> 0x12