divide overflow急,32位除法

divide overflow急,32位除法
源程序：
.486
DATA SEGMENT
NUM1 DD 10000010H
NUM2 DW 1000H
NUM3 DW
NUM4 DW
DATA ENDS
CODE SEGMENT
ASSUME CS:CODE,DS:DATA
START:MOV AX,DATA
MOV DS,AX
LEA SI,NUM1
MOV AX,[SI]
MOV DX,[SI+2]
;CWD
MOV CX,NUM2
;MOV CX,2
DIV CX
MOV NUM3,DX
MOV NUM4,AX
MOV AH,4CH
INT 21H
CODE ENDS
END START