User guide
Table Of Contents
- Contents
- 1-1 About This Manual
- 1-2 System Specifications
- 1-3 Safety Precautions
- 2-1 List of Jumpers and Connectors
- 2-2 Component Locations
- 2-3 How to Set Jumpers
- 2-4 COM Port Connector
- 2-5 RS232/422/485 (COM2) Selection
- 2-6 IRQ12 Release Selection
- 2-7 ATX Power Signal Connector
- 2-8 ATX Power Button
- 2-9 AT/ATX Power Selection
- 2-10 Universal Serial Bus Connector
- 2-11 Solid-State Disk Socket
- 2-12 SSD Memory Map Selection
- 2-13 Keyboard / PS2 Mouse Selection
- 2-14 Keyboard / PS2 Mouse Connector
- 2-15 External Keyboard Connector
- 2-16 Reset Connector
- 2-17 Hard Disk Drive LED Connector
- 2-18 CPU Fan Connector
- 2-19 System Fan Connector
- 2-20 External Speaker Connector
- 2-21 Floppy Disk Drive Connector
- 2-22 Hard Disk Drive Connector
- 2-23 VGA CRT Connector
- 2-24 LCD Panel Connector
- 2-25 LCD VDD Selection
- 2-26 Panel Power Connector
- 2-27 Printer Connector
- 2-28 Power LED & Keylock Connector
- 2-29 LAN Connector
- 2-30 LAN LED Indicators
- 2-31 Green Function Connector
- 2-32. Memory Installation
- 3-1. Introduction
- 3-2. VGA Driver Utility
- 3-3. Flash BIOS Update
- 3-4. LAN Driver Utility
- 3-5. Watchdog Timer Configuration
- 4-1. Power Saving Block Diagram
- 4-2. CPU Doze Mode
- 4-3. System Standby Mode
- 4-4 System Suspend Mode
- 5.1 Introduction
- 5-2 Entering Setup
- 5-3 Standard CMOS Setup Menu
- 5-4 BIOS Features Setup Menu
- 5-5 Chipset Features Setup
- 5-6 Power Management Setup
- 5-7 PnP/PCI Configuration
- 5-8 Load BIOS Defaults
- 5-9 Load Setup Defaults
- 5-10 Integrated Peripherals
- 5-11 Password Setting
- 5-12 IDE HDD Auto Detection
- PC-104 Connector Pin Assignment
- ISA Bus Pin Assignments
- PCI Bus Pin Assignments
- C-1 Introduction
- C-2 Troubleshooting with Error Messages
Software Configuration
CommPlete 4000 Server SBC, Model IPC-623C 45
3-5. Watchdog Timer Configuration
The watchdog timer does not run constantly. It must be started
in DOS Debug mode or from another application program,
customized for this purpose, that runs on the system. The
watchdog timer is especially useful for remote rebooting of the
PC.
The watchdog timer is defined at I/O port 0443H. To enable the
watchdog timer, write I/O port 0443H, then the system will reset
itself. To disable the function, write I/O port 0441H and the
system will stop the Watchdog timer.
Since the timer’s intervals have a tolerance of 25%, you should
specify that the timer be refreshed about once every second. To
program your watch timer, follow these steps:
Watchdog enable program:
MOVAX, 000FH (choose the values you need; start from 0)
MOVDX, 0443H
OUTDX, AX
Watchdog disable program:
MOVAX, 000FH (this value can be ignored)
MOVDX, 0441H
OUTDX, AX
The Watchdog Timer control table is as follows:
Level Value Time/sec Level Value Time/sec
1 F09764
2E810672
3 D 16 11 5 80
4 C 24 12 4 88
5 B 32 13 3 96
6 A 40 14 2 104
7 9 48 15 1 112
8 8 56 16 0 120