@Ploddles
now i am using a different bios for our Hero (one of the latest without incoming CPU support)
I see difference in our MMIO i think because you use different settings in Bios
0xFD000000 me
0xF7000000 you
and this converted in number produce different values:
4244635648 me
4143972352 you
and based on our old studies about mmio...it is impossible you have skipped 1 if you use my same number 🙂
it should be to investigate this fact better..but, if it works well for you...maybe is better do not ask more 🙂
AM5 is different from TRX40
here is possible to reassign 4 MMIO area to UEFI bios..but it is not so stable
only one reassigned is the best solution