About AAS

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l4m2

Joined: 15 Jan 2015
Posts: 674

l4m2 06 Dec 2016, 06:23

Code:

A100
MOV AX, 8
SUB AX, 9
AAS
INT 3

G=100

returns AX=FE09(Why) but

Code:

A100
MOV AL, 8
SUB AL, 9
DAS
INT 3

G=100

returns AL=99(in dec. 108-9=99)

06 Dec 2016, 06:23

l4m2

Joined: 15 Jan 2015
Posts: 674

l4m2 06 Dec 2016, 06:25

Code:

mov ax,407
sub ax,108
aas
int 3

returns AX=0109

06 Dec 2016, 06:25

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