If SUBB A,R4 is executed, then actually what operation is being applied?
A. R4+A
B. R4-A
C. A-R4
D. R4+A
Answer:A
If SUBB A,R4 is executed, then actually what operation is being applied?
A. R4+A B. R4-A C. A-R4 D. R4+A
Explanation: SUBB command subtracts with borrow the contents of accumulator with that of the register or some immediate value. So A-R4 is being executed.