dsdata segment
sum dw 0
dsdata ends
stk segment stack
db 100 dup(?)
stk ends
code segment
assume ds:dsdata,ss:stk,cs:code
start:
mov ax,dsdata
mov ds,ax
mov cx,100
mov ax,0
again:
add ax,cx
dec cx
jnz again
mov sum,ax
mov ah,4ch
int 21h
code ends
end start
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