Tomcat i7230A S5160 

                                                                  Chapter 3: BIOS Setup 

3.2.3 Memory Cache 

This setting allows you to tweak the various cache settings for optimal performance of your 

system. Press Enter to display the various cache settings. 

Cache System BIOS Area 

This feature is only available when the system BIOS is shadowed. It enables or disables the 

caching of the system BIOS ROM at F0000h FFFFFh via the L2 cache. This greatly speeds 

up accesses to the system BIOS. However, this does not necessarily make the system 

perform better because the OS does not need to access the system BIOS often. 

As such, it would be a waste of L2 cache bandwidth to cache the system BIOS instead of data 

that are more critical to the system s performance. In addition, if any program writes into this 

memory area, it will result in a system crash. So, it is recommended that you write protect this 

area for optimal system performance. 

NULL / Write Protect 

Cache Video BIOS Area 

This feature is only valid when the video BIOS is shadowed. It enables or disables the caching 

of the video BIOS ROM at C0000h C7FFFh via the L2 cache. This greatly speeds up 

accesses to the video BIOS. However, this does not necessarily make the system perform 

better because the OS bypasses the BIOS and uses the graphics driver to access the video 

card s hardware directly. 

As such, it would be a waste of L2 cache bandwidth to cache the video BIOS instead of data 

that are more critical to the system s performance. In addition, if any program writes into this 

memory area, it will result in a system crash. So, it is recommended that you write protect this 

area for optimal system performance. 

NULL / Write Protect 

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