maksg wrote on 2021-08-14, 04:53:
I need same help. Recently acquired Generic 386 Mainboard, 82C391 chipset, amd DX-40. Tried to find some documentation about this board and couldn't.
I looked for your board at Ultimate Hardware 19, the intended TH99 successor. I searched for that board using the filter "1 8-bit ISA slot", "6 16-bit ISA slots", "AMI BIOS". I didn't dare to include the Opti chipset into the filter, as I was afraid of missing your board in case it is categorized as "chipset unknown". Turns out, that fear was uncalled for, and if I had included the Chipset, there would have been only one result after filtering.
Your board is (a clone of?) the Shuttle HOT-307H: http://www.win3x.org/uh19/motherboard/show/4425