Intel IB935 user manual B. Interrupt Request Lines IRQ, Level, Function

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B. Interrupt Request Lines (IRQ)

APPENDIX

B. Interrupt Request Lines (IRQ)

Peripheral devices use interrupt request lines to notify CPU for the service required. The following table shows the IRQ used by the devices on board.

Level	Function
IRQ0	System Timer Output
IRQ1	Keyboard
IRQ2	Interrupt Cascade
IRQ3	Serial Port #2
IRQ4	Serial Port #1
IRQ5	Reserved
IRQ6	Floppy Disk Controller
IRQ7	Parallel Port #1
IRQ8	Real Time Clock
IRQ9	Reserved
IRQ10	Reserved
IRQ11	Reserved
IRQ12	PS/2 Mouse
IRQ13	80287
IRQ14	Primary IDE
IRQ15	Secondary IDE

54	IB935 User’s Manual

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Contents IB935 IB935, IB935RFVersion USER’S MANUALAcknowledgments Drivers Installation InstallationsBIOS Setup Realtek HD Code Audio Driver InstallationThe IB935 CPU Card Product Description IntroductionINTRODUCTION Checklist ReminderSpecifications Board Dimensions Installations INSTALLATIONSInstalling the CPU Lock Installing the MemoryDDR2 Module Lock Setting the Jumpers Jumpers on IB935 Jumper Locations on IB935Page JP4 Configure and Recovery Factory use only JP5 Power ON SettingJP7 Setting JP7 ICH9 PCI-E port 1-4 Configuration SettingsJP11 Clear CMOS Contents JP11Connectors on IB935 Connector Locations on IB935 Factory use onlySYSFAN1, SYSFAN2 SYSTEM Fan Power Connector ATX1 ATX 12V Power ConnectorCPUFAN1 CPU Fan Power Connector CN1, CN2, CN3, CN4 SATA HDD ConnectorIDE1 IDE1 Primary IDE ConnectorFDC1 Floppy Drive Connector FDD1J2 Parallel Port Connector VGA1 VGA CRT ConnectorJ1 External Audio Connector AutoFeedJ4 IrDA Connector J3 Digital I/O Connector 4 in, 4 outJ5 CD-In Audio Connector J6 COM2 Serial Port J7 COM1 Serial Ports ConnectorJ8 System Function Connector J7 is a 10-pin header support RS232 COM portsATX Power ON Switch Pins 7 and Speaker Pins 1Power LED Pins 11 Reset Switch Pins 9 andJ10, J11 External PS/2 Mouse and Keyboard Connector J9 PS/2 Keyboard and Mouse ConnectorJ12 Wake On LAN Connector J15, J17 Gigabit LAN RJ45 Connector J13 USB ConnectorJ14 USB Connector J16 SPI Debug Tools Port Factory use onlyThis page is intentionally left blank BIOS Setup BIOS Setup BIOS IntroductionPress DEL to Enter Setup Standard CMOS Features Standard CMOS Setup DateDrive A / Drive B TimeIDE Channel Master/Slave Landing Zone Landing zoneHalt On VideoThe system boot will not be halted for any error Hard Disk Boot Priority Advanced BIOS FeaturesCPU Feature Quick Power On Self TestBoot Up Floppy Seek First/Second/Third Boot DeviceBoot Other Device Boot Up NumLock StatusMPS Version Control for OS Security OptionAPIC Mode OS Select for DRAM 64MBCAS Latency Time Advanced Chipset FeaturesDRAM Timing Selectable DRAM RAS# to CAS# DelayPrecharge delay tRAS System BIOS CacheableVGA Setting System Memory FrequencyIntegrated Peripherals OnChip Secondary PCI IDE IDE DMA Transfer AccessIDE HDD Block Mode IDE Primary/Secondary Master/Slave PIOHot Key Power ON Power ON FunctionKB Power ON Password LEGACY Mode SupportUSB 1.0 Controller Parallel Port ModePWRON After PWR-Fail USB 2.0 ControllerACPI Function Power Management SetupPower Management ACPI SuspendVideo Off In Suspend HDD Power DownVideo Off Method Suspend TypeResume by Alarm Power On by RingReload Global Timer Events Reset Configuration Data PNP/PCI ConfigurationsPNP OS Installed Init Display FirstCPU Warning Temperature PC Health StatusShutdown Temperature Temperatures/Fan Speeds/VoltagesAuto Detect PCI Clk Frequency/Voltage ControlSpread Spectrum Set Supervisor Password Load Fail-Safe DefaultsLoad Optimized Defaults Save & Exit SetupDrivers Installation IDE Controller Driver Installation……………………………..522. Click IntelR Chipset Software Installation Utility Intel Chipset Software Intallation Utility6. When the Setup Progress screen appears, click Next to continue Intel Graphics Driver Installation 2. Click IntelR Bearlake Chipset Family Graphics DriverRealtek HD Code Audio Driver Installation 2. Click Realtek High Definition Codec Audio DriverIntel PRO LAN Drivers Installation 2. Click IntelR PRO LAN Network Drivers1. The BIOS Setup item “Wake-Up by PCI card” has to be set as Enabled IDE Controller Drivers Installation Appendix A. I/O Port Address MapB. Interrupt Request Lines IRQ LevelC. Watchdog Timer Configuration EnableAndSetWatchdogset count mode as second Name UnlockChip IN None Name ReadReg IN CL - register index D. Digital I/O Sample Code void LockW627HF void //===================================================================== void UnlockW627HF void switch to logic device APPENDIX This page is intentionally left blankIB935 User’s Manual