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AS1021M-T2/1021M-82 User's Manual
PCI-X Slot Freq. Select
Jumpers JPX1A and JPX1B on the
H8DMR-82/H8DMR-i2 can be used to
change the speed of PCI-X slots 6 and
PCI-X slot 7, respectively. See the
table on the right for jumper settings.
PCI-X Slot Frequency Select
Jumper Settings (JPX1A/JPX1B)
Jumper Setting Defi nition
Open Auto
Pins 1-2 PCI-X 66 MHz
Pins 2-3 PCI 66 MHz
Note: JPX1A controls the speed for PCI-X slot #6 and
JPX1B controls the speed for PCI-X slot #7. The default
setting for both is Auto.
Note: When enabled, the user needs to
write their own application software in or-
der to disable the Watch Dog timer.
Watch Dog
JWD controls Watch Dog, a system
monitor that takes action when a soft-
ware application freezes the system.
Jumping pins 1-2 will cause WD to
reset the system if an application is
hung up. Jumping pins 2-3 will gen-
erate a non-maskable interrupt signal
for the application that is hung up.
See the table on the right for jumper
settings. Watch Dog can also be
enabled via BIOS.
Watch Dog
Jumper Settings (JWD)
Jumper Setting Defi nition
Pins 1-2 Reset
Pins 2-3 NMI
Open Disabled
I
2
C to PCI Enable/Disable
The JI
2
C1/2 pair of jumpers allows you
to connect the System Management
Bus to the PCI expansion slots. The
default setting is closed (on) for both
jumpers to enable the connection.
Both connectors must be set the same
(JI
2
C1 is for data and JI
2
C2 is for the
clock). See the table on right for pin
defi nitions.
I
2
C to PCI Enable/Disable
Jumper Settings
(JI
2
C1/2)
Jumper Setting Defi nition
Closed Enabled
Open Disabled