NEG AX ZS: MOV BX,10
XOR CX,CX ;CX =0 Q0: XOR DX,DX ;DX=0
DIV BX ;AX/10 --->商放入ax，余数放入dx OR DX,0E30H PUSH DX INC CX CMP AX,0 JNZ Q0 Q1: POP AX DEC CX
INT 10H ;输出字符 CMP CX,0 JNZ Q1 ;输出小数程序
OT: MOV DL,'.' MOV AH,02H INT 21H MOV DI,0
OT1: MOV DX,NUM2[DI] ADD DI,2 ADD DX,30H MOV AH,02H INT 21H CMP DI,6 JL OT1
CALL _ENTER JMP START RET OUTPUT ENDP
;---------回车换行的子程序--------------------- _ENTER PROC NEAR
MOV DL,0DH ;回车 MOV AH,02H INT 21H
MOV DL,0AH ;换行 MOV AH,02H INT 21H RET _ENTER ENDP CODE ENDS
END START