Intel 8 LAN manual ICH8-NVMInformation Guide, Disable Protocol Select

ICH8—NVM Information Guide

Bit	Name	Description
		Disable Protocol Select.
2	DPS	If set to 1b, no changes to the boot protocol is allowed.
		The default for this bit is 0b; allow changes to the boot protocol.
		Disable Title Message.
		If set to 1b, the title message displaying the version of the boot agent
		is suppressed; the Control-S message is also suppressed. This is for
1	DTM	OEMs who do not want the boot agent to display any messages at
		system boot.
		The default for this bit is 0b; allow the title message that displays the
		version of the boot agent and the Control-S message.
		Disable Setup Menu.
		If set to 1b, no invoking the setup menu by pressing Control-S is
0	DSM	allowed. In this case, the EEPROM can only be changed via an external
		program.
		The default for this bit is 0b; allow invoking the setup menu by
		pressing Control-S.

1.4.23.3Boot Agent Configuration Customization Options (Word 32h)

Word 32h is used to store the version of the boot agent that is stored in the Flash image. When the Boot Agent loads, it can check this value to determine if any first-time configuration needs to be performed. The agent then updates this word with its version. Some diagnostic tools to report the version of the Boot Agent in the Flash also read this word. This word is only valid if the PPB is set to 0b. Otherwise the contents might be undefined.

Table 20. Boot Agent Configuration Customization Options (Word 32h)

Bit	Name	Description
15:12	MAJOR	PXE boot agent major version. The default for these bits is 0001b.
11:8	MINOR	PXE boot agent minor version. The default for these bits is 0010b.
7:0	BUILD	PXE boot agent build number. The default for these bits is 00101000b

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