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I0mmu option menu, Power down control [auto, Alternate vid [auto – Asus KFN5-Q/SAS User Manual

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4-18

Chapter 4: BIOS setup

Data Cache BG Scrub [Disabled]

Disables or sets the Data Cache BG Scrub. This item allows the

data cache BG Scrub RAM to be corrected when idle. Configuration

options: [Disabled] [40ns] [80ns] [160na] [320ns] [640ns] [1.28us]

[2.56us] [5.12us] [10.2us] [20.5us] [41.0us] [81.9us] [163.8us]

[327.7us] [655.4us] [1.31ms] [2.62ms] [5.24ms] [10.49ms]

[20.97ms] [42.00ms] [84.00ms]

I0MMU Option Menu

I0MMU is supported on LINUX based systems to convert 32-bit IO

addresses to 64-bits.

Set GART size in

systems without

AGP, or disable

altogether. Some OSes

require valid GART

for proper operation.

If AGP is present,

select appropriate

option to ensure

proper AGP operation.

I0MMU Mode

[Disabled]

I0MMU Mode [Disabled]

Set GART size in systems without AGP, or disable altogether.

Some OSes require valid GART for proper operation. If AGP is

present, select appropriate option to ensure proper AGP operation.

Configuration options: [AGP Present] [Disabled] [32MB] [64MB]

[128MB] [256MB] [512MB] [1GB]

Power Down Control [Auto]

Allows the DIMMs to enter power down mode by deasserting the clock

enable signal when DIMMs are not in use.

Configuration options: [Auto] [Disabled]

Alternate VID [Auto]

Allows you to specify the alternate VID in low power states.

Configuration options: [1.150 V] [1.125 V] [1.100 V] [1.075 V]

[1.050 V] [1.025 V] [1.000 V] [0.975 V] [0.900 V] [0.875 V] [0.850 V]

[0.825 V] [0.800 V] [Auto]