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2
Configuration and layout
Connector and Jumper Settings
Before installing the 80486VESA system board, make sure the
connectors and jumper settings are set for your configuration.
The 80486VESA system board has two jumpers (JP9, JP1O) for the
CPU Type selection, and two jumpers (JP12, JP13) for the Cache
Size selection. Connectors are also provided for the front panel
interface between the system board and the computer chassis.
The functions and settings of each connector and jumper setting
are explained as follows (see Figure 1, page 11 for locations).
Front Panel Reset Connector (JP14)
The reset button connector is a 2-pin single in-line BERG strip. It
is used to reboot the system and will allow safe re-initialization of
the system at any time. The connector should always be set in the
OFF position, otherwise the system will continually reset itself.
The pin assignments are:
JP14 Pin#
Front Panel Turbo Connector (JP15)
Connector JP15 is a 2-pin single in-line BERG strip. It is the
connector for the "Turbo" processor speed which can allow you to
switch between system speeds. (Please refer to Chapter 3
"Installation & Operation" for a detailed description on speed
switching procedures). The pin assignments are:
User's
80486VESA
Assignment
1
Ground
2
Reset Strobe
Manual
Chapter 2:
Configuration a Layout
5
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