30个(字节型)正整数之和

data segment
list db 1,3,......;其余数据自己定义
rut db ?
mess db "Overflow!$"
data ends
code segment
assume cs:code,ds:data
start:mov ax,data
mov ds,ax
lea bx,list
mov ax,0
mov cx,30
next:add al,[bx]
adc ah,0;ah存放相加时可能产生的进位
inc bx
loop next
cmp ah,0 ;如果全部加完后ah不为0,说明和超出字节的表数范围
jz save
lea dx,mess
mov ah,9
int 21h
jmp exit
save:mov rut,al
exit:mov ah,4ch
int 21h
code ends
end start