82583V Datasheet, PDF (75/374 Pages) Intel Corporation – Intel® 82583V GbE Controller

Non-Volatile Memory (NVM) Map—82583V GbE Controller
Table 19. Boot Agent Main Setup Options
Bit
Name
Hardware
Default
NVM
Image
Setting
Description
15:13 Reserved
12
FDP
11:10 FSP
9
Reserved
8
DSM
1b
7:6
PT
5
Reserved
4:3
DBS
2
Reserved
1:0
PS
000b
0b
00b
0b
1b
00b
0b
00b
0b
00b
Reserved, set to 0x0.
Force Full Duplex.
Set this bit to 0b for half duplex and 1b for full duplex.
Note that this bit is a don’t care unless bits 10 and 11 are set.
Force Speed.
These bits determine speed.
01b = 10 Mb/s.
10b = 100 Mb/s.
11b = Not allowed.
All zeros indicate auto-negotiate (the current bit state).
Note that bit 12 is a don’t care unless these bits are set.
Reserved
Set this bit to 0b.
Display Setup Message.
If this bit is set to 1b, the "Press Control-S" message appears after the
title message.
Prompt Time. These bits control how long the "Press Control-S" setup
prompt message appears, if enabled by DIM.
00b = 2 seconds (default).
01b = 3 seconds.
10b = 5 seconds.
11b = 0 seconds.
Note that the Ctrl-S message does not appear if 0 seconds prompt time is
selected.
Reserved
Default Boot Selection. These bits select which device is the default boot
device. These bits are only used if the agent detects that the BIOS does
not support boot order selection or if the MODE field of word 0x31 is set
to MODE_LEGACY.
00b = Network boot, then local boot.
01b = Local boot, then network boot.
10b = Network boot only.
11b = Local boot only.
Reserved
Protocol Select. These bits select the boot protocol.
00b = PXE (default value).
01b = Reserved.
Other values are undefined.
75