[IcePic]

I don't think that would be this quick either. Since the code might/will mess up zeropage and/or other dataareas in use by the C64 basic, you would have to wipe it to a known state for each test, which almost means "boot up the KERNAL and let it run complete INIT".

Not that even this have to take a long while on a 3GHz computer running full speed, but doing it 2^272 times ...

[saagarjha]

> you would have to wipe it to a known state for each test, which almost means "boot up the KERNAL and let it run complete INIT"

FWIW, if I were actually doing this I’d run it in a emulator and “save” the initial state to restore for the every test.