SCAS - Scan String (Byte, Word or Doubleword) Usage: SCAS string SCASB SCASW SCASD (386+) Modifies flags: AF CF OF PF SF ZF Compares value at ES:DI (even if operand is specified) from the accumulator and sets the flags similar to a subtraction. DI is incremented/decremented based on the instruction format (or operand size) and the state of the Direction Flag. Use with REP prefixes. Clocks Size Operands 808x 286 386 486 Bytes string 15 7 7 6 1 (W88=19)
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