Pci express related items, Bios, Page 4-16 init display first – Intel I925XE User Manual
Page 50: Resources controlled by, Pci/vga palette snoop, Maximum payload size
BIOS
Page 4-16
Init Display First
This item is used to select whether to initialize the VGA or PCI first when the system
boots.
Options: PCI Slot, PCIEx.
Resources Controlled By
Determines what controls system PNP/PCI resources. The default is Auto (ESCD).
Manual: PNP Card’s resources are controlled manually. The “IRQ Resources” field
becomes available and you can set which IRQ-X and DMA-X are
assigned to PCI and onboard devices.
Auto:
BIOS assigns the interrupt resource automatically.
PCI/VGA Palette Snoop
This item is designed to overcome problems that may be caused by some nonstandard
VGA cards.
Options: Enabled, Disabled.
*** PCI Express related items ***
Maximum Payload Size
Set maximum TLP payload size for the PCI Express devices. The unit is byte.
Options: 128, 256, 512, 1024, 2048, 4096.
Interrupt requests are shared as shown below:
A
T
N
I
B
T
N
I
C
T
N
I
D
T
N
I
o
i
d
u
A
V
1
I
C
P
V
2
I
C
P
V
I
C
P
3
V
P
X
E
-
I
C
P
)
6
1
x
(
1
V
)
1
x
(
2
P
X
E
-
I
C
P
V
)
1
x
(
3
P
X
E
-
I
C
P
V
1
N
A
L
d
r
a
o
b
n
O
V
2
N
A
L
d
r
a
o
b
n
O
V
4
9
3
1
d
r
a
o
b
n
O
V
1
B
S
U
d
r
a
o
b
n
O
V
2
B
S
U
d
r
a
o
b
n
O
V
3
B
S
U
d
r
a
o
b
n
O
V
4
B
S
U
d
r
a
o
b
n
O
V
0
.
2
B
S
U
V
IMPORTANT!
When using PCI cards on
shared IRQ slots, make sure its
drivers support “Shared IRQ”,
or that the cards do not need
IRQ assignments. IRQ conflicts
between the two PCI groups
will make the system unstable
or cards inoperable.