Asus P/I-P55T2P4S TAG SRAM Upgrade, Jumper Settings, 64MB, 512MB, [2-3], CBSIZE, Cacheable Size, ASUS P/I-P55T2P4SUser’s Manual, 1.Memory Cacheable Size (CBSIZE)

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	CBSIZE
64MB	[1-2] (Default)
512MB	[2-3]

CBSIZE		CBSIZE
	1	1
	2		2
	3		3
64MB Cacheable (Default)		512MB Cacheable

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.

Notch Indention

Insert one 16K8 or 32K8 SRAM chip as shown by the Top view with the semicircle "Indention" on the same side as the "Notch."

Motherboard Top Side

TAG SRAM Upgrade

INSTALLATION	(Jumpers)
III.

ASUS P/I-P55T2P4S User’s Manual 7