Hi guys. I got a 386 board some time ago and I need some help optimizing bios settings. The board is a SER 386-AD3 and with 128kb of L2 cache running a soldered 40MHz AM386-DX, running AMIBIOS. Here's what I'm unclear about:

Slow Refresh - this is currently set to 60u. Could I set it lower or higher to improve performance?
Polling Clock Select - this is currently at CLK2 /3. I have no ideea what frequency CLK2 is supposed to represent. I can set this to 14.32mhz, CLK/2, CLK2/2, CLK2/4 amd 28.64MHz. What would be the fastest setting?
DMA Clock Select - currently running at ATCLK witch is 7.19Mhz. I can set ATCLK or ATCLK/2. I take it it isn't safe to run this faster then 8MHz?

Here's a link to the board: http://stason.org/TULARC/pc/motherboards/S/SE … 86-386-AD3.html

I don't know if it's relevant, but the machine has a Cirrus Logic 54xx 1MB ISA video card, a AHA-1542C SCSI controller, a generic goldstar serial controller and a Creative SB32 currently installed.