IBM SAGP-845EV user manual 1st MB Memory Address Map Memory address Description, IRQ Mapping Table

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1st MB Memory Address Map

Memory address					Description
	00000-9FFFF				System memory
	A0000-BFFFF					VGA buffer
	F0000-FFFFF				System BIOS
	1000000-				Extend BIOS
IRQ Mapping Table

IRQ0		System Timer			IRQ8		RTC clock
IRQ1		Keyboard			IRQ9		USB2.0
IRQ2		Available			IRQ10		LAN
IRQ3		COM2			IRQ11		AUDIO/SMBus Cntrlr
IRQ4		COM1			IRQ12		PS/2 mouse
IRQ5		Available			IRQ13		FPU
IRQ6		FDC			IRQ14		Primary IDE
IRQ7		Available			IRQ15		Secondary IDE
DMA Channel Assignments

Channel				Function
0			Available
1			Available
2			Floppy disk (8-bit transfer )
3			Available
4			Cascade for DMA controller 1
5			Available
6			Available
7			Available

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Contents With 10/100 Ethernet LAN & AGP4X VGA SBC VersionCopyright Notice TrademarksSupport Table of Contents Introduction Specifications− For alternative applications, a keyboard and a PS/2 Package Contents Installation SAGP-845EV LayoutLayout Keyboard Power Selection Clear Cmos SetupCompact Flash Card Master/Slave Mode Setting CPU Voltage SettingConnection Table of Connectors Label FunctionFDD1 FDC Connector Floppy Disk Drive ConnectorUltra ATA33/66/100 IDE Disk Drive Connector IDE1 Primary IDE ConnectorIDE2 Secondary IDE Connector Parallel Port LPT1 Parallel Port ConnectorCOM1 10-pin Connector COM2 10-pin ConnectorSerial Ports Keyboard Connector USB Port ConnectorIrDA Infrared Interface Port Fan Connector LAN RJ45 ConnectorVGA Connector CN4 Audio Connector 2x82.00mm Audio ConnectorsCDIN1 CD-IN Connector 1X42.54mm pin head Right GND LeftCFA1 Compact Flash Storage Card Socket Pin Assignment Compact Flash Storage Card SocketGround Card DETECT1 Card DETECT2 GroundPW1 ATX Power Switch Connector External Switches and IndicatorsPW2 ATX12V Power Connector for CPU CN2 Multiple PanelStarting Setup Award Bios SetupPress DEL to enter Setup IntroductionUsing Setup Main MenuKey Function Standard Cmos Features Setup ItemsAdvanced Bios Features Advanced Chipset FeaturesEGA/VGA Standard Cmos SetupMM DD Yyyy Main Menu Selections Options DescriptionIDE MonoOptions Description IDE AdaptersCHS LBAAdvanced Bios Features LAN BootROM Quick Power On Self TestFirst/Second/Third/Other Boot Device Boot Up Floppy SeekTypematic Rate Setting Boot Up NumLock StatusTypematic Delay Msec Gate A20 OptionSmall Logo EPA Show Report No FDD For WinAuto Advanced Chipset FeaturesDram Timing Selectable CAS Latency TimeSystem Bios Cacheable Dram RAS# to CAS# DelayVideo Bios Cacheable Delay TransactionIntegrated Peripherals Flash BiosOn-chip VGA On-Chip Primary/Secondary PCI IDEUart Mode Select IDE HDD Block ModeParallel Port Mode IDE Primary/Secondary Master/Slave UdmaWatchdog Timer Unit Power Management SetupS1POS DpmsSuspend Mode Power ManagementFor SL CPU’s Video Off MethodPrimary IDE Secondary IDE FDD, COM, LPT Port HDD Power DownReset Configuration Data 10 PnP/PCI Configuration SetupResource controlled by IRQ ResourcesIRQ3/4/5/7/9/10/11/12/14/15 assigned to PC Health StatusPCI/VGA Palette Snoop VcoreAuto Detect PCI Clk Frequency/Voltage ControlSpread Spectrum CPU Host / 3V66 / PCI ClockDefaults Menu Supervisor/User Password Setting Enter PasswordPassword Disabled Save to Cmos and Exit Y/N? Y Exit SelectingExit Without Saving Quit without saving Y/N? YINT 15H AH 6FH Appendix a Watchdog TimerPage IO Address Map Address Range Description Appendix B Address Mapping1st MB Memory Address Map Memory address Description IRQ Mapping TableDMA Channel Assignments Function Bios Update Procedure Appendix C How to Upgrade a New BiosInstall screen Recovering the previous BiosAppendix D AGP Slot