User`s manual

G586VPA
Installation Overview u 2-20
321
Jumper J2
CPU Write Back/Through Control
Jumper J2 is used to select write back or write through
mode for CPU. Normally the write back mode is selected.
Note that some types of interface card require the write
through mode (e.g. Bus master VESA cards like Adaptec
AHA-2842VL or BusLogic BT445S).
321
1-2 On: Write Back Mode
(Default)
2-3 On:Write through
Mode
Jumper J20, J21 and J23
System Base Clock Setting
The G586VPA supports System Base Clock external
frequency of 50MHz, 60MHz or 66MHz. Set the jumpers
J20-J23 according to the type of CPU installed in the
CPU socket.
50MHz.
60MHz*
66MHz
2-3 On
1-2 On
2-3 On
1-2 On
1-2 On
2-3 On
J20
2-3 On
1-2 On
1-2 On
J22
J21
* Default setting