Asus CUSL2K User Manual download pdf (Page 62)

ASUS CUSL2K User’s Manual62

4. BIOS SETUP

Chip Configuration

SDRAM RAS to CAS Delay

This controls the latency between the SDRAM active command and

the read/write command.

SDRAM RAS Precharge Time

This controls the idle clocks after issuing a precharge command to the

SDRAM.

SDRAM Cycle Time (Tras, Trc) [6T, 8T]

This feature controls the number of SDRAM clocks used for SDRAM pa-

rameters Tras and Trc. Tras specifies the minimum clocks required be-

tween active command and precharge command. Trc specifies the mini-

mum clocks required between active command and re-active command.

Configuration options: [5T, 7T] [6T, 8T]

SDRAM Page Closing Policy [One Bank]

This feature controls that after a page miss whether the Graphics and

Memory Controller Hub (GMCH) will issue “precharge only the bank” or

“precharge all” command to a specific opened SDRAM bank. Configura-

tion options: [One Bank] [All Banks]

CPU Latency Timer [Enabled]

This controls the GMCH’s response to CPU deferrable cycles. Configura-

tion options: [Disabled] [Enabled]

Command Per Cycle [Enabled]

When onboard VGA is used, CPU can help to gain graphics performance

by increasing proper SDRAM cycles combinations. Configuration options:

[Enabled] [Disabled]

Onboard VGA [Enabled]

Leave on default setting if you want to use the onboard VGA. Select [Dis-

abled] if you want to use an add-on AGP or PCI VGA card. Configuration

options: [Disabled] [Enabled]

NOTE: The following 6 fields will only be displayed when the AGP Inline

Memory Module (AIMM) is used and Onboard VGA is set to [Enabled].

Display Cache [Enabled]

This field must be enabled to see the other Display Cache related con-

figuration fields. Configuration options: [Enabled] [Disabled]

Display Cache CAS Latency (DCCAS) [2T]

Configuration options: [2T] [3T]

Display Cache RAS to CAS Delay [Determined by DCCAS]

With the default setting [Determined by DCCAS], this field has the

same configuration as Display Cache CAS Latency (DCCAS). Con-

figuration options: [Determined by DCCAS] [2T]

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Asus CUSL2K User Manual Page 62