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, -, . () 8, 16 32 .

al/ax/eax. , .

 

.

:

- scas _ (SCAning String) ;

- scasb (SCAning String Byte) ;

- scasw (SCAning String Word) ;

- scasd (SCAning String Double Word) .

scas

scas _

, ( es:edi/di).

_, , scasb, scasw scasd.

. , db, al, scasb; dw, ax, scasw; dd, eax, scasd. , cmps,

(__ - ___).

, .

, cmps, scas repe/repz repne/repnz:

repe repz , :

( ecx/cx 0);

, al/ax/eax;

repne repnz , :

( ecx/cx 0);

, al/ax/eax.

, scas repe/repz , .

scas repne/repnz , .

 





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