Two 16 bit registers RO and R1 contain binary values – 97 and + 76 respectively. Carry flag C = 1. What is the result of the following micro-operations : (i) Add RO and R1 with Carry (ii) RO AND with complement R1 (iii) Shift right R1 without carry (iv) Selective set R1 using RO
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Solution:
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R1=-97
+97=01100001
-97=10011110(1’s complement )
-97=10011111(2’s complement )
R2=76
+76=01001100
Carry flag C=1
Means? Unable to understand.
Please explain