Two thoughts...
Firstly, has anyone tried to augment the power feed to a PPC by finding the +5v, +12v, and 0v rails on the PPC and soldering a additional molex socket to them? A bit like modern high-end gfx cards?
I doubt the power tracks, never mind the edge connector, on the A1200 were ever designed with supplying TWO processors with power in mind.
Just out of intrest, I was working on a 300Mhz PC when I started getting "Divide by zero errors" all over the place. Turns out i'd forgot to re-connect the processor fan and the heatsink was far too hot to touch.
Hodgkinson.
