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the problems of using c64p_getltime



Hello, I am using

start = C64P_getltime ();
... (Program)
end = C64P_getltime ();

the results of the simulation are different with that of the emulatio. why? And the difference are big

Meanwhile, I use the timer, the measured results are more different from the results described above. And the difference are big. Could you explain  it? Thank you