Help me to show some error in DS12887 interface code

[hbaocr]

PLZ show me some error I have met on this code below to interface AT89s52 to RTC(DS12887)


#include "REG52.h"
#include "ABSACC.h"

//define some variable for RTC
#define RTC P2
#define RTC_RegA 0x000A
#define RTC_RegC 0x000B
#define RTC_RegB 0x000C
#define RTC_RegD 0x000D
sbit INT = P3^3;
//declare function
void SetRTC(unsigned char value,unsigned char mode);
//main function

void main()
{
//set INT1
INT=1;	//cong nhap
IE=0x84;//cho phep ngat ngaoi 1
IT1=1;//ngat canh xuong
P2=12;
SetRTC(0,0);		 //xoa giay
SetRTC(0,2);		 //xoa phut
SetRTC(0,4);		 //xoa gio
while(1);

}
//===========chuong trinh phuc vu ngat========================
//ngat ngoai 1
void RTC_READY(void) interrupt 2
{
unsigned char kt;
EX1=0;//cam ngat
P2=PBYTE[0];
kt=PBYTE[RTC_RegC];//xoa thanh ghi C
EX1=1;//cho phep ngat lai

}

//==========set RTC========================
void SetRTC(unsigned char value,unsigned char mode)	//mode =0 Second ,=1 Second alarm, =2 Minutes,=3 Minutes alram;
//=4 Hour ,=5 Hour alarm,=6 day of week,=7 day of month,=8 month,=9 year,=50 century
{
// cac bit trong thnah ghi B
// SET	 PIE	 AIE	 UIE	 SQWE	 DM	 24/12	 DSE
PBYTE[RTC_RegB]= 0x80;//set=1 o che do update du lieu ta co the ghi vao cac thanh ghi
//thanh ghi A
//UIP	DV2	DV1	DV0	RS3	RS2	RS1	RS0 = 10101111

PBYTE[mode]=value;	 //cap nhat du lieu
PBYTE[RTC_RegA]= 0xAF; //DV2 DV1 DV0 =010 OSC on;INT1=0.5ms
PBYTE[RTC_RegB]=0x1A; //UIE=1 enable Interupt ended upate
                      //DM=0 data BCD mode, 24/12=1 24h
					  //set=0 automatic update data