I have this FIC 486-GVT board that I have been trying to get up and running and its POSTing now with my 40Mhz AMD CPU.

However, I was looking over some of the other jumpers on the board and I noticed this jumper called JX1 which according to the manual is CPU clock mode, were:

1pins 1 & 2 = CPU 1x clock mode
2pins 2 & 3 = CPU 2x clock mode

This jumper is currently set to pins 1 & 2. Would it have any effect setting this to pins 2 & 3?

Also, there is another jumper called JX2 which in the manual is listed at "Factory configured - do not alter" with pins 2 & 3 closed. However, on my board JX2 is set to pins 1 & 2. Would it be worth setting this back to pins 2 & 3?

Board manual:
https://stason.org/TULARC/pc/motherboards/F/F … -GVT-REV-A.html