1.asm

几个汇编小程序 例如字符传换,显示字符串 爱好学汇编者下载一用

DSEG          SEGMENT   
MESS1         DB    "THE CHANG OF MESS1",0DH,0AH,'$'
DSEG          ENDS      
STACK         SEGMENT   PARA STACK 'STACK'
              DB        50 DUP(?)
STACK         ENDS
CSEG          SEGMENT   
              ASSUME  CS:CSEG ,DS:DSEG 
              MOV       AX,DSEG 
              MOV       DS,AX 
START:        MOV       AX,OFFSET MESS1
              MOV       DX,AX
              MOV       AH,9 
              INT       21H
AGAIN:        MOV       AH,1   ;接收一个键盘输入一个字符OOS功能调用.
              INT       21H
              CMP       AL,1BH
              JE        EXIT
              CMP       AL,61h
              JC        ND
              CMP       AL,7AH
              JA        ND 
              AND       AL,1101111B
ND:           MOV       DL,AL
              MOV       AH,2
              INT       21H
              JMP       AGAIN
EXIT:         MOV       AH,4CH
              INT       21H
                                                                                   
CSEG          ENDS      
              END       START