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Intel Desktop Board D810EMO/MO810E Technical Product Specification
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3.2 BIOS Flash Memory Organization
The Intel 82802AB Firmware Hub (FWH) includes a 4 Mbit (512 KB) symmetrical flash memory
device. Internally, the device is grouped into eight 64-KB blocks that are individually erasable,
lockable, and unlockable. Figure 11 shows the organization of the flash memory.
The last two 8 KB blocks of the fault tolerance area are the parameter blocks. These blocks
contain data such as BIOS updates, vital product data (VPD), logo, System Management BIOS
(SMBIOS) interface, and extended system configuration data (ESCD) information. The backup
block contains a copy of the fault tolerance block.
64 KB Block
7
64 KB Block
6
64 KB Block
5
64 KB Block
4
64 KB Block
3
64 KB Block
2
64 KB Block
1
64 KB Block
0
Fault Tolerance
Main System BIOS
Backup
Boot Block
080000
07FFFF
070000
06FFFF
060000
05FFFF
050000
04FFFF
040000
03FFFF
030000
02FFFF
020000
01FFFF
010000
00FFFF
000000
OM08376
48 KB - Reserved
8 KB - Parameter Block 2
8 KB - Parameter Block 1
Figure 11. Memory Map of the Flash Memory Device
3.3 Resource Configuration
3.3.1 PCI Autoconfiguration
The BIOS can automatically configure PCI devices. PCI devices may be onboard or add-in cards.
Autoconfiguration lets a user insert or remove PCI cards without having to configure the system.
When a user turns on the system after adding a PCI card, the BIOS automatically configures
interrupts, the I/O space, and other system resources.
PCI devices can share an interrupt. Autoconfiguration information is stored in ESCD format.
For information about Refer to
The board’s compliance level with Plug and Play Table 2, page 13