Toshiba R100 manual Dynamically Switchable

3 Tests and Diagnostics 3.24 SETUP

8. Others

Whether or not you need to configure the computer with these options depends primarily on the kind of software or peripherals you use.

(a)CPU Cache

Use this option to enable or disable the CPU cache.

Enabled	Enables the CPU cache. (Default)
Disabled	Disables the CPU cache.

When "Enabled" is selected, the following sub-window is displayed to select the cache write policy. The options for this setting are Write-back(default) and Write-throughfor CPU cache.

OPTION

Write policy = Write-back

Write-back policy provides better system performance, because main memory is accessed only when necessary to update the cache contents with changes in main memory. Write-through policy accesses main memory every time data is handled by the processor.

(c)Level 2 Cache

Use this option to enable or disable the level 2 cache. When "CPU Cache" is set to "Disabled", this option cannot be changed.

Enabled	Enables the level 2 cache. (Default)
Disabled	Disables the level 2 cache.

(d)Dynamic CPU Frequency mode

Use this option to choose a setting from the followings.

This is displayed only when the CPU is a Mobile Intel® Pentium® III processor-M.

Dynamically Switchable

Enables Intel SpeedStep technology. When the computer is in use, CPU power consumption and clock speed are automatically switched when necessary. (Default)

Always High Disables Intel SpeedStep technology and always runs the processor at its fastest speed.

3-68 PORTEGE R100 Maintenance Manual (960-440)