i am testing a pcchips m921(not the m919 shit with faked cache) with umc8881 chipset and 512kb cache. so i expect it to cache up to 64mb of ram in wb mode, and 128mb in wt mode by theory. however, despite setting cache to wt mode, it would only cache up to 56mb of ram, after which its not even cached by cpu l1 cache!
cpu: amd486dx4-100 with 16kb wb cache
ram: 64mb
cache: 512kb wt mode
cachechk result:
11(up to 16kb)-20(up to 512kb)-30(after 512kb) up to 56mb
40-40-40 after 56mb

and i want to collect all your 386/486 cachechk results, including following info:
board model/chipset
cpu
cache size/mode
largest ram size that you ever stuffed into it
cachechk result(mostly cacheable range)