Datasheet

15 8 7 0

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Instruction Set

3.4.6.48 SWPB

SWPB Swap bytes

Syntax SWPB dst

Operation Bits 15 to 8 ↔ bits 7 to 0

Description The destination operand high and low bytes are exchanged as shown in Figure 3-19.

Mode Bits OSCOFF, CPUOFF, and GIE are not affected.

Figure 3-19. Destination Operand - Byte Swap

Example MOV #040BFh,R7 ; 0100000010111111 -> R7

SWPB R7 ; 1011111101000000 in R7

Example The value in R5 is multiplied by 256. The result is stored in R5,R4.

SWPB R5 ;

MOV R5,R4 ; Copy the swapped value to R4

BIC #0FF00h,R5 ; Correct the result

BIC #00FFh,R4 ; Correct the result

111

SLAU144J–December 2004–Revised July 2013 CPU

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