System Installation
PEB-7431VL User’s Manual
3-2
3.3 Ethernet
The Ethernet interfaces are based on one Realtek 8139C Ethernet controller, which
support both 100Mbit as well as l0Mbit Base-T interface.
The Ethernet controllers are attached to the PCI bus and use PCI bus mastering for
data transfer. The CPU is thereby not loaded during the actual data transfer.
Driver Support
PEB-7431VL provides one CD-Title to support on-board Ethernet device drivers in
various operating systems. Before installing the device driver, please see the
reference files in each sub-directory.
If you have problems to install drivers directly
from CDROM, please copy the files into your hard drive before you proceed with
the driver installation.
Ethernet
: This driver supports Windows-NT4.0, Windows-9X, Linux and other
OS.
3.4 IDE
interface
A primary as well as a secondary IDE controller is provided by the STPC Atlas chip
which supports Ultra DMA mode and PCI bus mastering for the data transfer.
Access to these controllers is provided by two standard IDE 40-pin connector and a
Compact Flash type II connector on the solder side of this board.
3.5
Watch Dog Timer Programming
There are one manners to activate the Watch-Dog Timer (WDT) function. You can
utilize hardware jumper setting and programmed by software command. After this
feature is enabled, a system reset will be generated unless an application triggers the
timer periodically within time-out period. This allows the system to restart in an
orderly way in case of any abnormal condition is found.
This WDT comes with 8 possible ranges of time intervals from 0.5 s to 64 sec., which
can be adjusted by setting jumper positions. It could be enabled and programmed by
reading I/O port 0533H or 0543H to issue trigger continuously, and disabled by
reading I/O port 0033H or 0343H. A tolerance of 30% timer limit must be
considered. For instance, if the time-out interval is set to 1second, the WDT trigger
command must be issued within 700ms at least.
The below example gives you a reference algorithm for WDT programming via I/O
port 0533H and 0033H in your application program :
