Jumper Settings; Tag Sram Upgrade - Asus P/I-P55T2P4S User Manual

III. INSTALLATION

Jumper Settings

1. Memory Cacheable Size (CBSIZE)
The default of 64MB uses only the onboard TAG SRAM which allows cacheable
memory up to 64MB. If you install DRAM above 64MB and wish to allow
cacheable memory above 64MB, you need to install a TAG SRAM upgrade and
set this jumper to 512MB. See this section for "TAG SRAM Upgrade."
Cacheable Size
64MB
512MB

TAG SRAM Upgrade

The purpose of this SRAM is described by "Memory Cacheable Size" jumper. You
must use a standard 5Volt SRAM chip that is 15ns or faster.
TAG SRAM Upgrade
ASUS P/I-P55T2P4S User's Manual
CBSIZE
[1-2] (Default)
[2-3]
CBSIZE
1
2
3
64MB Cacheable (Default)
Cacheable Size (64MB / 512MB)
Notch
Indention
Motherboard Top Side
CBSIZE
1
2
3
512MB Cacheable
Insert one 16K8 or 32K8
SRAM chip as shown by
the Top view with the semi-
circle "Indention" on the
same side as the "Notch."
7