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DATA SEGMENT
STRING DB 'A,c,d,B,e,H,f' LEN EQU $-STRING
BUF DB 7 DUP(?)
DATA ENDS
CODE SEGMENT
ASSUME CS:CODE,DS:DATA START:
MOV AX,DATA
MOV DS,AX
LEA SI,STRING
MOV CX,LEN
LEA DI,BUF
LOOP:
MOV AL,[SI]
CMP SI,60H
JA NEXT
DEC CX
INC SI
CMP CX,0
JNZ LOOP
NEXT:
SUB AL,20H
MOV [DI],AL
INC DI
MOV AH,4CH
INT 21H
CODE ENDS
END START
