Specify the contents of flag register for the following program:-
MVIA,08H
MVIC,09H
SUBC
CMPC
HLT
Specify the contents of flag register for the following program:- MVIA,08H MVIC,09H SUBC CMPC HLT
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MVIA,08H
MVIC,09H
SUBC
CMPC
HLT
AFTER EXECUTION OF THE ABOVE CODE RESULT WILL BE FFH.
FLAG:
SIGN FLAG: 08H-09H as this set of instructions will set the sign flag to 1 as 30 – 40 is a negative number.
ZERO FLAG: result is non zero so Z= 0.
AUXILIARY CARRY FLAG: D3 TO D4 there is no carry generated. AC=0.
PARITY FLAG: In FFH there are even number of 1’s so P=1.
CARRY FLAG: C=1