quest of p55 whitepaper or info to induce 3x multiplier

I've recently dug up an old socket 7 mobo and a late production p120. The
chip does 2x75mhz and would like to try 3x but unforunately the mobo isn't
working properly. I would like to find out which pin to pull up/down on
the chip itself so i can see if 3x75 will work.
I've scoured the net and can't find any documentation on this. If you have
one my email is

thanks