汇编语言B试题及答案(9)

DEC SI

DEC DI

REP MOVSB

39、 XOR AX, AX

XOR DX, DX

LOP:STC

RCL AX, 1

RCL DX, 1

LOOP LOP

40、DATA SEGMENT

DB1 DB X X

DB2 DB ?

DATA ENDS

STACK1 SEGMENT PARA STACK

DB 10H DUP(0)

STACK1 ENDS