auto660
Semiprofi
So the oscilloscope arrived today. I did some testing and all the voltages come on in the right order, the power-ok signal is also timed correctly.
The 100MHz PLL clock signal to the cpu is also looking good.
The clock signals for the FSB aren't starting up, these get enabled once the ROMSIP is transferred successfully. This pinpoints the problem to somewhere between the power-ok signal and the end of the ROMSIP transfer.
I'm going to debug some more tomorrow but this is already a big step.
The 100MHz PLL clock signal to the cpu is also looking good.
The clock signals for the FSB aren't starting up, these get enabled once the ROMSIP is transferred successfully. This pinpoints the problem to somewhere between the power-ok signal and the end of the ROMSIP transfer.
I'm going to debug some more tomorrow but this is already a big step.