Step 1 Setting The Jumpers - Intel Motherboard Raptor AT Installation Manual

Chapter 1: Pre-Configuration
Step 1 Setting the Jumpers
Your Raptor AT is equipped with a large number of peripherals and has
the ability to run at a variety of speeds without the need to change any
crystals or oscillators. As such, there are a large number of
configuration jumpers on the board. Taken step by step, setting these
jumpers is easy. We suggest you review each section and follow the
instructions.
Jumper Types
Jumpers are small copper pins attached to the system board. Covering
two pins with a shunt closes the connection between them. The Raptor
AT examines these jumpers to determine specific configuration
information. There are three different categories of jumpers on the
Raptor AT.
A. Two pin jumpers are used for binary selections such as enable,
disable. Instructions for this type of jumper are open, for no shunt over
the pins or closed, when the shunt covers the pins.
B. Three or four pin jumpers are used for multiple selections.
Instructions for these jumpers will indicate which two pins to cover.
For example: for JPx 2-3 the shunt will be covering pins 2 and 3
leaving pins 1 and 4 exposed.
C. Grouped jumpers are used when a certain function has multiple
selections. There are two grouped jumpers on the board and careful
attention should be given when setting these jumpers. Instructions for
grouped jumpers are similar to those above.
How to identify pin number 1 on Figure 1-1: Looking to the solder side
(The board side without components) of the PCB (Printed Circuit
Board), pin number 1 will have a squared pad . Other pins will have
a circular pad . They are numbered sequentially.
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