Hello and happy new year dear vogons users!
I'd like to try my nos UMC cpu on this 486 mb, the problem is on voltage selection there are just 2 settings (JP7): 3.45 and 3.60, in spite of this some pages down on support cpu list the umc cpu is mentioned, there is a blob of jumpers (from jp18 to jp24) with different settings, I noticed that JP23 controls the cache 3-4 for WB and 2-3 for WT, but have no clue about the others.