TMR0 as counter

[savnik]

Another question.

I use TMR0 as counter to measure the frequency at RA4
How i know, how many times the TMR0 overflow.
The maximum times is 3

For first overflow INTCON.2 = 1 , After;

pic16f88
xtal =4mhz
option_reg = %10110111

Until today i don't solve this problem.
To know how many times TMR0 has overflow;