Computer Hardware User's Guide

Bitwise-Exclusive OR, 3-Operand XOR3
13-251 Assembly Language Instructions
Example 1 XOR3 *AR3++(IR0),R7,R4
Before Instruction After Instruction
R4 00 0000 0000 R4 00 0000 A53C
R7 00 0000 FFFF R7 00 0000 FFFF
AR3 80 9800 AR3 80 9810
IR0 10 IR0 10
LUF 0 LUF 0
LV 0 LV 0
UF 0 UF 0
N 0 N 0
Z 0 Z 0
V 0 V 0
C 0 C 0
Data memory
809800h 5AC3 809800h 5AC3
Example 2 XOR3 R5,*–AR1(1),R1
Before Instruction After Instruction
R1 00 0000 0000 R1 00 0000 0F33
R5 00 000F FA32 R5 00 000F FA32
AR1 80 9826 AR1 80 9826
LUF 0 LUF 0
LV 0 LV 0
UF 0 UF 0
N 0 N 0
Z 0 Z 0
V 0 V 0
C 0 C 0
Data memory
809825h 0FF5C1 809825h 0FF5C1
Note: Cycle Count
See subsection 8.5.2, Data Loads and Stores , on page 8-24 for the effects
of operand ordering on the cycle count.