Use the 8086 assembly to compile a small program, the very small kind can be, whatever it is, the ba

I tried to count it in the 3*3 grid before, and it took more than 40 seconds, and then I used the same calculation method to use the 4*4 grid, and the result was no response.

3*3 takes 40 seconds, 4*4 takes decades.

This palace grid has a formula for filling in the numbers.,The even palace grid and the odd palace grid are not the same.,What is the specific, you can search for it again.。

First of all, I'm going to help you explain the procedure.

INT 21 is a feature provided by the DOS system.

Each function of DOS has a number, and if we want to use this function we just put the function number in AH and call int 21h, like this.

mov ah, 1

int 21h

Purpose: Enter a character, which is equivalent to scanf in c

However, some functions require certain parameters, and there is a return value after the call, how to use these functions, the following ** has a specific description of each function, what do you not understand.

The first one is put a, which is subtracted from the others, and there is a borrowed exchange.

;Displays the string.

mwrite macro text:reqlocal string

datastring byte text,0

codeinvoke writestring,offset stringendm

stackdata

codemain proc

mwrite "Hello! So-and-so, goodbye! This sentence"

exitmain endp

Displays a 0 ending string.

Parameter pstr = the start address of the string.

Return: None. writestring proc uses ax dx si ,pstr:ptr byte

pushfmov si,pstr

l0:mov dl,byte ptr [si]inc si

cmp dl,0

je l1mov ah,2

int 21h

jmp l0

l1:popf

retwritestring endp

end main

assume cs:code

data segment

str1 db 'Hello! So-and-so, goodbye! ',0ah,'$'

data ends

code segment

start:

mov ax,data

mov ds,ax

mov ah,9

lea dx,str1

int 21h

mov ah,4ch

int 21h

code ends

end start

What can't be compiled?

It's a compilation that didn't work.

Don't get an error message?

0fendh, what is it?