汇编语言 统计负数个数（一）

DTSEG SEGMENT
MES1  DB	'The result is:$'
NUMB  DB 12H,88H,82H,89H,33H,90H,01H,10H,0BDH,01H
DTSEG ENDS

CDSEG SEGMENT
ASSUME CS:CDSEG,DS:DTSEG
START:MOV AX,DTSEG
MOV DS,AX

MOV	DX,OFFSET MES1
MOV	AH,09H
INT	21H
MOV BL,0H
MOV CX,0AH
MOV SI,OFFSET NUMB
NEXT: MOV AX,[SI]
AND AX,80H
CMP AX,0H
JG  MIN
JMP CON
MIN:  INC BL
CON:  INC SI
LOOP NEXT
CALL SHOW
MOV AH,4CH
INT 21H

SHOW	PROC	NEAR
PUSH	AX
PUSH	DX
MOV	AL,BL
AND	AL,0F0H			;取高4位
SHR	AL,4
CMP	AL,0AH			;是否是A以上的数
JB	C2
ADD	AL,07H
C2:	   ADD	AL,30H
MOV	DL,AL			;show character
MOV	AH,02H
INT	21H
MOV	AL,BL
AND	AL,0FH			;取低4位
CMP	AL,0AH
JB	C3
ADD 	AL,07H
C3:	   ADD	AL,30H
MOV	DL,AL			;show character
MOV	AH,02H
INT	21H
POP	DX
POP	AX
RET
ENDP
CDSEG ENDS
END START