Filter
Top Products
99
CHAPTER 7 DETAILED EXECUTION INSTRUCTIONS
7.22 EOR (Exclusive Or Word Data of Source Register to
Destination Register)
Takes the logical exclusive OR of the word data in "Ri" and the word data in "Rj", stores
the results to "Ri".
■ EOR (Exclusive Or Word Data of Source Register to Destination Register)
Assembler format: EOR Rj, Ri
Operation: Ri eor Rj → (Ri)
Flag change:
N: Set when the MSB of the operation result is "1", cleared when the MSB is "0".
Z: Set when the operation result is "0", cleared otherwise.
V and C: Unchanged
Execution cycles: 1 cycle
Instruction format:
Example: EOR R2, R3
NZVC
CC– –
MSB LSB
10011010 Rj Ri
R2
R3
1111 0000
1010 1010
NZVC
CCR
R2
R3
CCR
0000
NZVC
0000
0101 1010
1111 0000
Before execution After execution
Instruction bit pattern : 1001 1010 0010 0011