[TI-H] Re: TI-83P SE hardware, looking for thoughts
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[TI-H] Re: TI-83P SE hardware, looking for thoughts
Well, i know what you mean, but look in hp calcs the freq is generated
with a crystal .
Not only interrupts are taken from the crystal, the main clok signal too
(for the z80).
A good point will be to find the R-C oscillator, then you can guess the
crystal is for other thing...
The important thing is the software had changed or not ? (some rom dump
will clarify this...). Most PLL have some regs to modify the freq so...
(i read you played with ports... the point is what have changed ?).
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