Lan1/2 Enable/Disable; Vga Enable/Disable; Compact Flash Master/Slave Select; Watch Dog Enable/Disable - Supermicro H8SCM User Manual

LAN1/2 Enable/Disable

Change the setting of jumper JPL1 or JPL2
to enable or disable the LAN1 or LAN2
Ethernet port. See the table on the right
for jumper settings. The default setting is
enabled.

VGA Enable/Disable

JPG1 allows you to enable or disable the
VGA port. The default position is on pins 1
and 2 to enable VGA. See the table on the
right for jumper settings.

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.
LAN1/2 En/Disable Jumper
Settings (JPL1/JPL2)
Jumper Setting
Pins 1-2
Pins 2-3
VGA Enable/Disable
Jumper Settings (JPG1)
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.
2-15
Chapter 2: Installation
Defi nition
Enabled
Disabled
Defi nition
Enabled
Disabled
Defi nition
Slave (Secondary)
Master (Primary)
Watch Dog
Defi nition
Reset
NMI
Disabled