Intel Desktop Board D810EMO/MO810E Technical Product Specification

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.

080000

07FFFF

070000

06FFFF

060000

05FFFF

050000

04FFFF

040000

03FFFF

030000

02FFFF

020000

01FFFF

010000

00FFFF

000000

64 KB Block

7

 

 

Boot Block

 

 

 

 

 

 

64 KB Block

6

 

 

 

 

 

64 KB Block

5

 

 

 

 

 

64 KB Block

4

 

 

Main System BIOS

 

 

64 KB Block

3

 

 

 

 

 

64 KB Block

2

 

 

 

8

KB - Parameter Block 2

64 KB Block

1

 

 

Fault Tolerance

8

KB - Parameter Block 1

64 KB Block

0

 

 

Backup

48

KB - Reserved

 

OM08376

Figure 11. Memory Map of the Flash Memory Device

3.3 Resource Configuration

3.3.1PCI 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

 

 

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