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 51 行

#include <reg51.h>
typedef unsigned char BYTE;

BYTE DISP_CNT;
BYTE TCNT;

BYTE code TABLE[]={	0x00,0x00,0x00,0x00,0x00,0x00,0x00,
					0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,0x7F,
					0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};

void INT_T0() interrupt 1
{
	TH0=(65536-5000)/256;
	TL0=(65536-5000)%256;
	P2++;

	if(P2==0x08)
	{
		P2=0x00;
		TCNT++;
		if(TCNT==10)
		{
			TCNT=0x00;
			DISP_CNT++;
			if(DISP_CNT==15)
			{
				P2=0x00;
				DISP_CNT=0x00;
				TCNT=0x00;
			}	
		}	
	}

}

main()
{
	DISP_CNT=0x00;
	TCNT=0x00;
	P2=0x00;
	TMOD=0x01;
	TH0=(65536-5000)/256;
	TL0=(65536-5000)%256;
	IE=0x82;
	TR0=1;
	
	while(1)
	{
		P0=TABLE[DISP_CNT+P2];
	}	
}