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FR81 Family
418 FUJITSU MICROELECTRONICS LIMITED CM71-00105-1E
CHAPTER 7 DETAILED EXECUTION INSTRUCTIONS
7.170
7.170 SUBN (Subtract Word Data in Source Register from
Destination Register)
Subtracts the word data in Rj from the word data in Ri, stores results to Ri without
changing the flag settings.
● Assembler Format
SUBN Rj, Ri
● Operation
Ri - Rj → Ri
● Flag Change
N, Z, V, C: Unchanged.
● Classification
Add/Subtract instruction, Instruction with delay slot
● Execution Cycles
1 cycle
● Instruction Format
NZVC
----
MSB LSB
10101110 Rj Ri