t3-13.asm

来自「上课时老师讲的一些经典的例子；错过了就太可惜了呀」· 汇编 代码 · 共 35 行

SEGADDR = 40H
OFFADDR = 0
COUNT   = 2408
KEYCHAR = 'A'
SEGRESU = 0
OFFRESU = 3FEH;

CSEG SEGMENT
     ASSUME CS:CSEG
START:
     MOV AX,SEGADDR
     MOV DS,AX
     MOV SI,OFFADDR
     MOV CX,COUNT
     MOV AL,KEYCHAR

NEXT:
     CMP AL,[SI]
     JZ OK
     INC SI
     LOOP NEXT
     MOV SI,0FFFFH

OK:
     MOV AX,SEGRESU
     MOV DS,AX
     MOV BX,OFFRESU
     MOV [BX],SI

     MOV AH,4CH
     INT 21H
CSEG ENDS
     END START