(MASM Assembly Language)

Assume ZF, SF, CF, OF are all clear at the start, and the 3 instructions below run one after another. a. fill in the value of all 4 flags after each instruction runs b. explain why CF and OF flags have that value Your explanation should not refer to signed or unsigned data values, the ALU doesn't see data as signed or unsigned but it can still set the flags. Here you don't know if these are signed or unsigned values, either. c. answer yes or no for the questions

mov al, A0h

add al, 70h ; a. ZF = SF = CF = OF = ; b. explanation for CF: ; explanation for OF: ; c. If unsigned data, is it valid? If signed data, is it valid?

sub al, 10h ; a. ZF = SF = CF = OF = ; b. explanation for CF: ; explanation for OF: ; c. If unsigned data, is it valid? If signed data, is it valid?

Thanks for any help!