I had to restore windows from scratch, when winstone crash it always do it in a catastrophic way.
Actually testing the Cyrix\IBM v2.9 (2x100) cpu with l2 cache disabled, I swapped the ram from slot 3 to slot 1 (the ram bank is proved to be fine, also before it was working fine on slot 3):
photo_2021-04-22_06-25-16.jpg
Completed without errors but the frequency switching is still there.
L2 cache enabled:
photo_2021-04-22_06-47-32.jpg
Completed without errors but the frequency switching is still there.
Rise mp6 (2,5x100), l2 cache enabled: first time it crashed upon starting the program, second time, I had several applications crash:
03.png
So, in the end I suppose we have 2 different issues there.
The motherboard goes nuts with frequency and there are l2 cache stability issues but they are intermittent.
I'm considering that there could be a socket issue there, as Tiido supposed when he tried to fix the motherboard, the next step is find a guide about how to open it without destroying the plastic cover. I found a guide some time ago about opening a socket 370 but I'm unable to find it and when I tried to take off the plastic cover from a sloket it just tear down in pieces.
I'm very disappointed and low morale, I had the chance to compare all the ss7 cpus (well almost) but with so many troubles, I will need to postpone until I will find a working aopen motherboard