User Guide

Hardware Installation
2-12
2.7 Customizing your Hardware Setup
You may customize your hardware setup according to the desired system
performance. However, doing so requires resetting of several jumpers. The
onboard jumpers are normally set to its default setting. See the figure in
section 2.2 for the location of the jumpers on the system board.
The following sections tell how to configure the system board to meet the
desired performance:
2.7.1 Enabling the ATX Power Supply
The AX53 board comes with two power
connectors to support both PS/2 and
ATX power supplies. To use an ATX
power supply, set the jumper JP1 to 2-3.
To switch to PS/2 power supply, reset
JP1 to 1-2.
2.7.2 Selecting the Cache Size
The AX53 supports 256-KB and 512-
KB pipelined-burst cache. If your board
comes with a 256-KB onboard cache,
JP7 is preset by the manufacturer to 1-2.
To upgrade your cache to 512 KB via
cache upgrade socket, change the setting
of JP7 to 2-3.
If your board comes with a 256-KB
pipelined-burst cache, JP7 presetting is
2-3.
Power OFF
Power ON
(default)
256-KB
512-KB
ATX Power Supply JP1
JP7