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H8DCE User's Manual
Watch Dog Enable/Disable
JWD 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 (set-
ting located in the Power Menu).
Watch Dog
Jumper Settings (JWD)
Jumper Setting Defi nition
Pins 1-2
Reset
Pins 2-3
NMI
Open
Disabled
Note:
When enabled, the user needs to
write their own application software in or-
der to disable the Watch Dog timer.
Onboard Speaker Enable/Disable
The JF2 header allows you to use
either an external speaker or the
internal (onboard) speaker. To use
the internal (onboard) speaker, close
pins 5 and 7 with a jumper. To use an
external speaker, connect the speaker
wires to pins 1 through 7 of JF2. See
the table on the right for settings and
the table associated with the Power
LED/Keylock/Speaker connection
(previous section) for pin defi nitions.
Onboard Speaker Enable/Disable
Pin Defi nitions (JF2)
Pins Defi nition
5 and 7
Jump for onboard speaker
1,3,5,7
Attach external speaker wires
Summary of Contents for Supero H8DCE
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