On 10/28/18 12:25 AM, Peter Stuge wrote:
Why are there no RAM regions? I don't know.
Quite simple, because the code that adds them is tied to 8086:0f00.
nico_h in the IRC chat noticed that in non-working board appears a starnge device with vid/did PCI: 00:00.0 [8086/0000].
The 0000 is a HUGE red sign, screaming to be thoroughly investigated.
This also hints that the power up changes may be the problem.
I agree, but note that in the datasheet (or EDS at least), the DID is not read-only. A strap (that I coudn't find more about) is supposed to set the initial value plus there is a message mentioned (to be sent to sth. I didn't look into) that may change it.
So alternatively to diagnosing the hardware changes, you could also follow the bread crumbs in the documentation.
Nico