Ah just checked, I was confused, turns out most boards do indeed use jumpers for the FSB 😊
But DIP switches for voltage and multiplier.
So yes, sounds like a great idea!
It's added to my project list. Maybe for an improved 4 in 1 machine, you know, compile some findings and things like that.
The GA-5AX and AOpen AX59 Pro have two jumpers that need changing (1-2 to 2-3) to switch between 66 and 100 MHz. I will test if your method works with these boards (removing the pin = one of the settings). That would make the mod super easy, which just a single switch that closes two circuits. Double-pole or double-throw (DPDT) switch, is this what I should be looking for?
Something like this: http://www.ebay.com.au/itm/2-Pcs-ON-ON-2-Posi … =item339fedcd3b
The DFI K6XV3+/66 does use DIP switches.