Intel EMB-945T manual B.2 IT8712 Watchdog Timer Initial Program

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B.2 IT8712 Watchdog Timer Initial Program

Mini - ITX	E M B - 9 4 5 T

B.2 IT8712 Watchdog Timer Initial Program

.MODEL SMALL

.CODE

Main:

CALL Enter_Configuration_mode CALL Check_Chip

mov cl, 7

call Set_Logic_Device ;time setting

mov cl, 10 ; 10 Sec dec al

Watch_Dog_Setting: ;Timer setting mov al, cl mov cl, 73h

call Superio_Set_Reg

;Clear by keyboard or mouse interrupt mov al, 0f0h

mov cl, 71h

call Superio_Set_Reg ;unit is second. mov al, 0C0H

mov cl, 72h

call Superio_Set_Reg

Appendix B Programming the Watchdog Time B-6

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Contents AC 97 Audio & Mini PCI EMB-945TIntel Core Duo/Solo Processor Up to 2.0 GHz Mini-ITX Marvell 88E8053 EthernetMini-ITX Copyright NoticeAcknowledgments Packing List Chapter 2 Quick Installation Guide ContentsChapter 1 General Information Chapter 3 Award BIOS Setup Appendix A Driver InstallationAppendix B Programming The Watchdog Timer ChapterChapter General InformationChapter 1 General Information 1.1 Introduction Chapter 1 General Information 1.2Features System 1.3 SpecificationsDisplay Page Chapter 2 Quick Installation Guide Quick Installation GuideMini ITX 2.1 Safety Precautions Locating Connectors and Jumpers Component Side 2.2 Location of Connectors and JumpersLocating Connectors and Jumpers Solder Side 2.3Mechanical Drawing Component Side Solder Side 2.4 List of Jumpers Jumpers2.5 List of Connectors ConnectorsCN24 Open 2.6 Setting JumpersClosed 2.10 LCD INVERTER Voltage Selection JP4 2.7 LVDS1-LCDCN12Voltage Selection JP12.8 LVDS2-LCDCN10Voltage Selection JP2 2.9 COM2 Ring/+5V/+12V Selection JP3Function 2.13 CD-INConnector CN12.14 Digital I/O Connector CN2 2.12 Clear CMOS JP68 out 2.15 TV Out Connector CN32.16 Internal Keyboard Connector CN4 8 in2.20 LCD Inverter Connector CN8 2.17 Fan2 Connector CN52.18 Audio 5.1 Channel / SPDIF Connector CN6 2.19 Internal Mouse Connector CN72.21 PCI Express Slot For AAEON CN9 2.23 DVI Connector CN11 2.22 LVDS2-LCDConnector CN102.24 LVDS1-LCDConnector CN12 Pin Signal 2.25 COM6 RS-232Serial Port Connector CN132.26 COM3 RS-232Serial Port Connector CN14 2.27 Fan1 ConnectorCN152.29 COM4 RS-232Serial Port Connector CN17 2.28 COM5 RS-232Serial Port Connector CN162.30 IrDA Connector CN18 Mini ITXE M B - 9 4 5 T 2.31 ATX Power Connector CN192.32 USB Connector CN20 2.33 USB ConnectorCN212.34 EIDE Connector CN22 2.36 COM2 RS-232Serial Port Connector 2.35 Front Panel Connector CN23Chapter 3 Award BIOS Setup Award BIOS Setup3.1System Test and Initialization System configuration verification3.2Award BIOS Setup Entering SetupStandard CMOS Features Advanced BIOS FeaturesLoad Fail-SafeDefaults Advanced Chipset FeaturesPower Management Setup PnP/PCI ConfigurationsSave and Exit Setup Set Supervisor/User PasswordExit Without Saving Chapter 4 Driver Installation Driver InstallationFollow the sequence below to install the drivers SetupYukonWin.exe 4.1 InstallationStep 4 - Install Realtek AC97 codec Driver Appendix I/O InformationAppendix A I/O Information A-1 Appendix A I/O Information A-2 A.1 I/O Address MapAppendix A I/O Information A-3 A.2 Memory Address Map A.3 IRQ Mapping ChartAppendix A I/O Information A-4 A.4 DMA Channel AssignmentsAppendix B Programming the Watchdog Time B-1 Programming the Watchdog TimerB.1 Programming Configuring Sequence DescriptionAppendix B Programming the Watchdog Time B-2 Appendix B Programming the Watchdog Timer B-3 1 Enter the MB PnP Mode2 Modify the Data of the Registers 3 Exit the MB PnP ModeConfigure Control Index=02h WatchDog Timer Configuration RegistersAppendix B Programming the Watchdog Time B-4 Appendix B Programming the Watchdog Timer B-5 B.2 IT8712 Watchdog Timer Initial Program game port enable mov cl, call Set Logic Device Read Configuration Data PROC NEAR RET Exit Configuration Mode ENDPCALL Read Configuration Data CMP AL,87h CALL Read Configuration Data CMP AL,12hMOV DX,WORD PTR CS Cfg Port+06h IN AL,DX RET Set Logic Device endp END Mainpush ax push cx xchg al,cl mov cl,07h call Superio Set Reg pop cx pop ax ret