Q11

MCQMarks unknown

Consider the following 8085 program segment, where registers B and C contain BCD values: S1: MVI A, 99H MVI D, 00H SUB C ADD B DAA S2: JC S3 MOV E, A MVI A, 99H SUB E MOV E, A JZ S4 MVI D, FFH JMP S4 S3:INC A DAA MOV E, A S4: .........

(A)

For the two pairs (B = 44, C = 25) and (B = 33, C = 46) at S1, Find the values in register A when control reaches S2. Find the values in register D and E when control reaches S4.

(B)

What, in general, is the value of D and E as a function of B and C when control reaches S4?

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