16F877 upgrade to 18F4620

[skimask]

I downloaded the pdf file from microchip's webpage and read it.
It said:
Two External Clock modes, up to 40 MHz
These 2 modes are:
9. EC External Clock with FOSC/4 Output
10. ECIO External Clock with I/O on RA6
/me

I'll be.... guess I should have read further into it.
Oh well. Run 10Mhz external gives the option of a sort of clock throttling anyways, switching between the various oscillators, both internal and external. I use it a lot to save battery juice.