Question

The 8-bit registers R1, R2, R3, and R4 initially have the following values:

R1 - 1111 0010, R2- 1 1 1 1 1 1 1 1 , R3- 1011 1001 , R4  1 1 101010

Determine the 8-bit values in each register after the execution of the following sequence of microoperations.

R1 <-R1 + R2                                        

R3<- R3 ^ R4, R2 <-  R2 + 1       

R1 <- R1 – R3   

Answer 1

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