im implementing timing in my emulator mixing "how to write a computer emulator" and 2C02 Tech. Ref. but i dont know if its correct. In other words i read that an scanline takes 341/3 = 113 cpu cycles, so i do the following:

---------------------
if (SLCounter <= 0)
{
SLCounter = 113;
ProcessScanLine()
// and other things...
}
else
SLCounter-= OpcodeCycle;
---------------------

is this correct?
I thing its a very poor "timing" algoritm, can somebody help me about Timing?

Thanks