asciitobcder.asm

微机的程序~很多~如~BCD转换成二进制~加减法运算等

STACK SEGMENT STACK
	  DW 64 DUP(?)
STACK ENDS
DATA  SEGMENT
	  ORG 3500H
DATA1 DB 5 DUP(?)
      ORG 350AH
DATA2 DB 5 DUP(?)
DATA  ENDS
CODE  SEGMENT
	  ASSUME CS:CODE,DS:DATA
START: MOV AX,DATA
       MOV DS,AX
       LEA SI,DATA1
       LEA DI,DATA2
       MOV CX,0005H
A1:    MOV AL,[SI]
       CMP AL,30H
       JL A2
       CMP AL,39H
       JG A2
       SUB AL,30H
       MOV [DI],AL
       INC SI
       INC DI
       LOOP A1
       JMP A3
A2:    MOV AL,0FFH
       MOV[DI],AL
       INC SI
       INC DI
       LOOP A1
A3:    MOV AH,4CH
       INT 21H
CODE   ENDS
       END START