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CHAPTER 7 DETAILED EXECUTION INSTRUCTIONS
7.23 EOR (Exclusive Or Word Data of Source Register to Data in
Memory)
Takes the logical exclusive OR of the word data at memory address "Ri" and the word
data in "Rj", stores the results to the memory address corresponding to "Ri".
The CPU will not accept hold requests between the memory read operation and the
memory write operation of this request.
■ EOR (Exclusive Or Word Data of Source Register to Data in Memory)
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 + 2a cycles
Instruction format:
NZVC
CC– –
MSB LSB
10011100 Rj Ri