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H8DGU-LN4F+ Serverboard User's Manual
LAN1/2/3/4 Enable/Disable
Change the setting of jumper JPL1 to
enable or disable the LAN1/LAN2 Ethernets
ports and JPL2 to disable the LAN3/LAN4
Ethernet ports. See the table on the right
for jumper settings. The default setting is
enabled.
Compact Flash Master/Slave Select
A Compact Flash Master (Primary)/Slave
(Secondary) Select Jumper is located at
JCF1. Close this jumper to enable Compact
Flash Card. For the Compact Flash Card
or the Compact Flash Jumper (JCF1) to
work properly, you will need to connect the
Compact Flash Card power cable to JWF1
fi rst. Refer to the board layout below for the
location.
Watch Dog Enable/Disable
JWD1 enables the Watch Dog function, a
system monitor that takes action when a
software application freezes the system.
Jumping pins 1-2 will have WD reboot the
system if a program freezes. Jumping pins
2-3 will generate a non-maskable interrupt
for the program that has frozen. See the
table on the right for jumper settings. Watch
Dog must also be enabled in BIOS.
I2C to PCI-Express Slot
JI
2
C1/JI
2
C2 allows you to enable the I
to communicate with the PCI-Express slot.
For the jumpers to work properly, please set
both jumpers to the same setting. If enabled,
both jumpers must be enabled. If disabled,
both jumpers must be disabled. See the table
on the right for jumper settings.
LAN1/2 En/Disable
Jumper Settings
Jumper Setting
Pins 1-2
Pins 2-3
Compact Flash Card Master/
Slave Select (JCF1)
Jumper Setting
Open
Closed
Jumper Settings (JWD1)
Jumper Setting
Pins 1-2
Pins 2-3
Open
Note: when Watch Dog is enabled,
the user must write their own
application software to disable the
Watch Dog Timer.
2
I
C to PCI-Express Slot
Jumper Settings
2
C bus
Jumper Setting Defi nition
Closed
Open
2-18
(JPL1/JPL2)
Defi nition
Enabled
Disabled
Defi nition
Slave (Secondary)
Master (Primary)
Watch Dog
Defi nition
Reset
NMI
Disabled
(JI
2
C1/JI
2
C2)
Enabled
Disabled
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