In SX Microcontrollers, SX/B Compiler and SX-Key Tool, PJMonty wrote:

Electronegativity,

I figured that since you wanted a [b]true[/b] random number generator, you needed to be sure it was truly random.  Since you're just making a game, any old psuedo-random number generator will be more than adequate.  You're killing yourself with all this extra effort.

James' suggestion will work fine, but can be made even better.  Run a pseudo-random number generator in the RTCC.  Assuming a reasonably fast interrupt rate, you will be generating hundreds or thousands of random numbers per second.  Whenever the user presses a button to start a new game, there's basically no way they will ever be accurate enough to predictably get the same random seed each time.  I used this exact technique on a project and it works great.

[list]Thanks,
PeterM[/list]

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