Pci-X Slot Frequency Select; Onboard Speaker Enable/Disable - Supermicro H8DSL-HTi User Manual

H8DSL-HTi User's Manual

PCI-X Slot Frequency Select

Jumpers JPX1A and JPX1B are both
used to set the speed of PCI-X slot
#6. The recommended (default) set-
ting is with JPX1A on pins 2-3 and
JPX1B open (Auto) for a setting of
133 MHz. One of these two jumpers
must be left open when setting the
speed. See the tables on the right for
jumper settings.
Onboard Speaker Enable/
Disable
The JD1 header allows you to use
either an external speaker or the
internal (onboard) speaker. To use
the internal (onboard) speaker, close
pins 6 and 7 with a jumper. To use an
external speaker, connect the speaker
wires to pins 4 through 7 of JD1. See
the table on the right for settings and
the table associated with the Power
LED/Speaker connection (previous
section) for pin defi nitions.
Watch Dog
JWD1 controls the Watch Dog function.
Watch Dog is a system monitor that
can reboot the system when a software
application hangs. Pins 1-2 will cause
WD to reset the system if an applica-
tion has frozen. Pins 2-3 will generate
a non-maskable interrupt signal for the
application that is frozen. See the table
on the right for jumper settings. Watch
Dog must also be enabled in BIOS.
Slot #6 Frequency Select
Jumper Settings
(JPX1A)
Jumper Setting
Pins 1-2
Pins 2-3
Open
Slot #6 Frequency Select
Jumper Settings
(JPX1B)
Jumper Setting
Pins 1-2
Pins 2-3
Open

Onboard Speaker Enable/Disable

Pin Defi nitions (JD1)
Pins Defi nition
6-7 Jump for onboard speaker
4-7 Attach external speaker wires
Watch Dog
Jumper Settings (JWD1)
Jumper Setting
Pins 1-2
Pins 2-3
Open
Note: When enabled, the user needs to
write their own application software in or-
der to disable the Watch Dog Timer.
2-16
Defi nition
100 MHz PCI-X
133 MHz PCI
Auto
Defi nition
66 MHz PCI-X
66 MHz PCI
Auto
Defi nition
Reset
NMI
Disabled