2-6
Jumper Summary
Ampro installs option jumpers in default positions so that in most case s the Little Boar d P6d
module requires no special jumpering for standard AT operation. You can connect the power and
peripherals and operate it immediately.
Jumper-pin arrays are designated W1, W2, and so forth. Jumper pins are spaced 2 mm apart. A
square solder pad identifies pin 1 of each jumper array. Table 2-2 is a summary of jumper use.
Factory settings are shown in the Default column. Some jumpers are set at the factory to configure
options that are not user-settable. These are indicated in the table. Do not change these settings.
Table 2-2. Configuration Jumper Summary
Jumper Group Function Default
W1 CompactFlash IDE Master/Slave
ON=Master, OFF=Slave ON
W2 BIOS Flash EPROM Programming Power
ON=Programming enabled
OFF= Programming disabled
ON
W3 External BIOS Board Enable/Cable Connection
ON=Normal, OFF=External Cable ON
W4 Serial 1 RS485 100 Ohm Termination
ON=Terminated, OFF=Unterminated OFF
W5 Serial 2 RS485 100 Ohm Termination
ON=Terminated, OFF=Unterminated OFF
W6 Serial 3 RS485 100 Ohm Termination
ON=Terminated, OFF=Unterminated OFF
W7 Serial 4 RS485 100 Ohm Termination
ON=Terminated, OFF=Unterminated OFF
W8 Local Head Phone Enable
ON = Enable Local HP, OFF = Disable HP OFF
W9 Watchdog timer reset enable
ON=Enabled, OFF=Disabled OFF