BIOS Setup
EC3-1820V2NA
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Exit Saving Changes
Exit and save changes.
Exit Discarding Changes
Exit and discard previous changes.
Load Setup Defaults
Load factory defaults.
Load Optimized Defaults
Load optimized defaults.
Discard Changes
To discard changes.
Save Changes
To save changes.
3.3 System Resource Managed by BIOS under X86 Platform
We define three kinds of system resources here: I/O port address, IRQ interrupt
number and DMA number.
IO Port Address
Only 16 I/O address cables of X86 are designed, 0
~
0FFFFh. I/O address space has
64K in total. For traditional ISA slot, only the 1024 (0000
~
03FFh) at the front are
used, and ports above 0400h are used by PCI slots and EISA slots. Each peripheral
device will occupy a section of I/O address space. The following table shows the list
of I/O ports to be used on the X86 platform.