System Memory (Dram & Sram); Tag Sram Upgrade - Asus P/I-P55T2P4 User Manual

2. System Memory (DRAM & SRAM)
This motherboard supports four 72-pin SIMMs of 4MB, 8MB, 16MB, 32MB, or
64MB to form a memory size between 8MB to 256MB. The DRAM can be either
60ns or 70ns Fast Page Mode (Asymmetric or Symmetric) or EDO. To support
ECC, you must use true (opposed to phantom parity generated by logic chips) 36-bit
parity-type DRAM (e.g. 8 chips + 4 parity chips) in pairs for all modules. Mixing
32-bit non-parity DRAM (e.g. 8 chips) and 36-bit DRAM (e.g. 12 chips) will work
minus the ECC feature.
Install memory in any or all of the banks in any combination as follows:
Bank
Bank 0
SIMM Sockets 1&2
Bank 1
SIMM Sockets 3&4
IMPORTANT: Memory setup is required in BIOS Chipset Setup "Auto
Configuration" on page 34.
IMPORTANT: Each bank must have the same size memory installed in
pairs. Do not use memory modules with more than 24 chips per module.
Modules with more than 24 chips exceed the design specifications of the
memory subsystem and will be unstable.

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.
WARNING: If the cache module that you install already have an extended tag, do
not install another TAG SRAM into the TAG SRAM Upgrade Socket.
12
III. INSTALLATION
Memory Module
4MB, 8MB, 16MB, 32MB, 64MB
72-pin FPM or EDO SIMM
4MB, 8MB, 16MB, 32MB, 64MB
72-pin FPM or EDO SIMM
Total System Memory
Notch
Top
TAG SRAM Upgrade
ASUS P/I-P55T2P4 User's Manual
Total Memory
x2
x2
=
Indention
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."
Side