The original crystal is about 3.61 MHz, and yes, the PLL multiplies it up to
get the desired frequency. There might be a way of doing it so it is a
smooth transition. Correction, there is a way to do it so it is a smooth
transition. Which is what Pixsolution does. Their implant board has the
two crystals on it, and other circuitry which I am going to assume monitors
the clock and makes the transition from one xtal to the other in a smooth
way and at a time when the newton isn't doing something important.
The quick-n-dirty way is, well, quick and dirty.
When my website is ready I'll post the instructions, pictures, etc. on it.
-Stephanie
>> I removed the crystal from the motherboard and added a
>> 5.0 MHz chip, and used a micro-switch to select between them.
> And here I'm stuck. A 5MHz chip but for what? Is there a PLL used to
> multiply the x-tal frequency by 44? If so may be the PLL could be mis-used
> to make a smooth transition between 162 and 220MHz if its VCO has a wide
> enough range.
>
>> Another challenge is where to put the switch. I cut a small bit of
> plastic
>> away next to the serial port and put it there, recessed so it can't get
>> bumped accidentally.
> Amazing to imagine what you did! :-) I got a MP2k1 recently with the NIC
> port missing, which gives enough space to mount even something else beside
> the micro switch.
> --
> With best regards / Viele Gruesse
>
> Marco Mailand
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