Am writing a PIC program using MikroC pro, am using 16F877A, the program is not working because TMR0 is not increasing, I initialized it as following:

OPTION_REG = 0x82; // Assign prescaler to TMR0

TMR0 = 6; // Timer0 initial value

INTCON = 0xA0; // Enable TMRO interrupt

when debugging, i can see clearly that TMR0 is not increasing at all, what do you think that the problem could be?

Thanks in advance