小弟使用Pic16F877上，試寫個有關於Timer1送出個pulse的程式，但不知那裏出錯，一直無法Work，請指正一下，謝謝^^

#include <pic.h>

unsigned int i;
int cnt;
int j;

void timeini()
{
#define TIMER_1 0x2710
#define TMR1RESET (0xFFFF-TIMER_1)
#define TMR1RESET_HIGH TMR1RESET >> 8
#define TMR1RESET_LOW TMR1RESET & 0xFF
TMR1CS=0;
TMR1ON=0;
TMR1H=TMR1RESET_HIGH;
TMR1L=TMR1RESET_LOW;
TMR1ON=1;
TMR1IF=0;
TMR1IE=1;
GIE=1;
}

void initial()
{
TRISD = 0x00;
RD0 = 0;
}

void delay()
{
for(i = 12; --i; ) continue;
}

main()
{
initial();
timeini();
while(1);
}

void interrupt timer1_isr(void)
{
TMR1IF=0;
TMR1H=TMR1RESET_HIGH;
TMR1L=TMR1RESET_LOW;
cnt++;
if(cnt==50)
{
RD0 = 1;
delay();
RD0 = 0;
delay();
cnt = 0;
}
}