汇编程序：统计0的个数

data  segment
da1  dw  ....
data ends

assume cs:code,ds:data
data  segment
da1  dw  2,3,0,1,4,2,0,3,0,5,7,1,1,0,8,9
data ends

code segment
start: mov  ax,data
mov  ds,ax
lea  si, da1
mov  cx,16     ;共16个数据
sub bl,bl      ;bl中存放统计数据，清0

again: mov  al,[si]   ;统计0的个数
cmp al,0
jne next
inc bl
next:inc si
inc si
loop again

test bl,01h    ;检查bl中保存的0的个数是否为奇数，奇数的第0位一定为1
jne  l1
clc            ;为奇数时
jmp done
l1: stc            ;为偶数时
done: mov ah,4ch
int 21h
code ends
end start