Chapter 3 BIOS Setup
NET-1821VD2N
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Save Changes and Reset
The option is used to save changes and reset.
Discard Changes and Reset
The option is used to discard changes and reset.
Boot Override
This option is used to choose boot device.
System Resource Managed by UEFI under X86 Platform
We define three kinds of system resources here: I/O port address, IRQ interrupt
number and DMA number.
DMA
Level
Function
DMA0 Unassigned
DMA1 Unassigned
DMA2 Unassigned
DMA3 Unassigned
DMA4
Used for DMAC cascade
DMA5 Unassigned
DMA6 Unassigned
DMA7 Unassigned
APIC
Advanced programmable interrupt controller. Most motherboards above P4 level
support APIC and provide more than 16 interrupt sources, like IRQ16 - IRQ23; while
some others can have up to 28 interrupt sources, such as motherboard supporting
PCI-X. However, relevant OS are required to enable that function.