Ampro Corporation LITTLE BOARD 5001451A - Manual (Page 57)

Little Board P6d Module
2-39
http://developer.intel.com/design/network/drivers/index.htm#82559ER
Note
Intel updates its web site frequently and this location could move in
the future.
Ethernet Setup
This section describes how to configure and connect the Ethernet LAN interface.
There are no jumpers to set on the Ethernet interface, and no hardware configuration, other than
connecting the network cable to an appropriate connector.
Software configuration of the Ethernet interface includes the following steps:
1. In Setup, enable the Ethernet interface.
2. Install the proper driver for the network operating system you will be running. Follow Intel’s
instructions for installing your driver.
Ethernet Indicator LEDs
Two LED indicator lamps are provided on the board to indicate the status of the Ethernet interface.
You can use these LEDs as simple trouble-shooting aids when connecting to an Ethernet segment.
Table 2-37 shows the meaning of each LED.
Table 2-37. Ethernet Diagnostic LEDs
Color Designation Function
Green D3 Link Status
Red D4 TX or RX Activity
Watchdog Timer
The watchdog timer function restarts the system if a mishap occurs. Possible problems include:
failure to boot properly; application software losing control; temporary power supply problems;
failure of an interface device; unexpected conditions on the bus; or other hardware or software
malfunctions. The watchdog timer helps assure proper start-up after an interruption. The Little
Board P6d ROM-BIOS supports the board’s watchdog timer function in two ways:
There is an initial watchdog timer setting, specified using SETUP, which determines whether the
watchdog timer monitors the system boot, and if so, how long the time-out is (30, 60, or 90 seconds).
Set the initial time-out (using SETUP) long enough to guarantee that the system can boot and pass
control to the application. Then, the application must periodically retrigger the timer by reading
I/O Port 201h so the time-out does not occur. If the time-out does occur, the system will respond as
determined by how the watchdog timer jumper, W8, is set (see Chapter 2).
There is a standard ROM-BIOS function which may be used by application software to start and
stop the watchdog timer function. Ampro provides the WATCHDOG program that you can use from
the command line or in a batch program to manage the watchdog timer. It is described in the