main.c

来自「《Proteus在MCS-51&ARM7系统中的应用百例》逆向之 Chapter」· C语言 代码 · 共 69 行

#include <reg51.h>

typedef unsigned char BYTE;

BYTE code SEGTAB[]={0x3F,0x06,0x5B,0x4F,0x66,
				  	0x6D,0x7D,0x07,0x7F,0x6F};

sbit DIN=P3^0;
sbit CLK=P3^1;


BYTE DBUF0[2];	
BYTE TEMP[2]; 		

void delay();

main()
{
	BYTE num;
	BYTE out;
	BYTE offset;

	DBUF0[0]=0x01;
	DBUF0[1]=0x05;
	
	offset=0;
	num=0x02;
	do
	{
		TEMP[offset]=SEGTAB[DBUF0[offset]];
		offset++;	
	}while(--num);

	num=0x02;	
	offset=0;

	do
	{	
		out=0x08;
		ACC=TEMP[offset];
		do
		{
			#pragma asm
				RLC A
			#pragma endasm

			DIN=CY;
			CLK=0;
			CLK=1;
		}while(--out);
		offset++;	
	}while(--num);

	while(1);
			
}

void delay()
{
	BYTE i=0x03;

	do
	{	
		BYTE j=0xFF;
		do
		{
		}while(--j);
	}while(--i);
}