汇编实现输入一个字符显示十六进制ASCII码

CODES SEGMENT
ASSUME CS:CODES
START: MOV AH,01H
INT 21H
MOV DL,AL
MOV BL,AL
MOV CL,4
SHR DL,CL
ADD DL,30H
CMP DL,41H
JLE NEXT
ADD DL,7H
NEXT:MOV AH,2H
INT 21H
MOV DL,BL
AND DL,0FH
ADD DL,30H
CMP DL,41H
JLE NEXT2
ADD DL,7H
NEXT2:MOV AH,2H
INT 21H
MOV AH,4CH
INT 21H
CODES ENDS
END START