Chapter 4: BIOS
Secure Virtual Machine Mode
This setting is used to Enable or Disable SVM.
Power Now
This setting is used to Enable or Disable the AMD Power Now feature.
ACPI SRAT Table
This option Enables or Disables the building of the ACPI SRAT Table.
Clock Spread Spectrum
This option should remain Disabled for normal operation. The driver developer may enable it for testing purposes.
IDE Configuration
Onboard PCI IDE Controller
This setting allows you to set the options for the PCI IDE controller. Options include Disabled, Primary, Secondary or Both.
Primary/Secondary/Third IDE Master/Slave
LBA/Large Mode
LBA (Logical Block Addressing) is a method of addressing data on a disk drive. The options are Disabled and Auto.
Block (Multi-Sector Transfer)
Block mode boosts IDE drive performance by increasing the amount of data transferred. Only 512 bytes of data can be transferred per interrupt if block mode is not used. Block mode allows transfers of up to 64 KB per interrupt. Select "Disabled" to allow the data to be transferred from and to the device one sector at a time. Select "Auto" to allows the data transfer from and to the device occur multiple sectors at a time if the device supports it. The options are Auto and Disabled.
PIO Mode
PIO (Programmable I/O) mode programs timing cycles between the IDE drive and the programmable IDE controller. As the PIO mode increases, the cycle time decreases. The options are Auto, 0, 1, 2, 3, and 4. Select Auto to allow BIOS to auto detect the PIO mode.