#include<reg52.h>
#include<absacc.h>

/*******************************************宏定義***************************************************/

#define uint unsigned int
#define uchar unsigned char

/*******************************************定義8155地址***********************************************/

#define COM8155  XBYTE[0X7FF8]		  //8155的命令口
#define PA8155   XBYTE[0X7FF9]		  //8155的PA
#define PB8155   XBYTE[0X7FFA]		  //8155的PB
#define PC8155   XBYTE[0X7FFB]		  //8155的PC
#define DAC XBYTE[0XDFFF]			  //D/A端口地址

uchar code InitialCode[]={0xfe,0xfd,0xfb,0xf7};

sbit RS=P3^0;
sbit RW=P3^1;
sbit EN=P3^2;								   //鍵盤碼值
/*******************************************鍵盤引腳定義**********************************************/

sbit key1=P1^4;			   //key1
sbit key2=P1^5;			   //key2