int cnt;
void init_int(void)
{
TMOD = 0x00;
TH1 = 0x3C;
TL1 = 0xB0;
TR1 = 0x01;
}
void counter () interrupt 3
{
cnt++;
TH1 = 0x3C;
TL1 = 0xB0;
}
void main(void)
{
init_int();
cnt = 0;
for (;;)
{
}
}