IBM PC 300GL manual Appendix C. IRQ and DMA channel assignments, IRQ channel assignments

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Appendix C. IRQ and DMA channel assignments

The following tables list the interrupt request (IRQ) and direct memory access (DMA channel assignments.

Table 36. IRQ channel assignments

IRQ	System resource

NMI	Critical system error

SMI	System management interrupt - power management

0	Reserved (interval timer)

1	Reserved (keyboard)

2	Reserved, cascade interrupt from slave PIC

3	COM2

4	COM1

5	LPT2/audio (if present)

6	Diskette controller

7	LPT1

8	Real-time clock

9	ACPI

10	Available to user

11	Available to user

12	Mouse port

13	Reserved (math coprocessor)

14	Primary IDE (if present)

15	Secondary IDE (if present)

© Copyright IBM Corp. 2000

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Contents HcchM mlmiM mlni hcc mlml HcchM mlmiM mlni hcc mlml Second Edition March Contents Page Preface Related publicationsTerminology Features System OverviewCD-RW Adsl modems Wake on LANWake on Ring PC 300 GL and 300 PL System board features Intel Pentium III microprocessor with MMX technologyL2 Cache Chip set controlTable . Memory Configuration MB Total Memory Mem O PCI Bus IDE bus master interfaceUSB interface Video Subsystem Video subsystem resources Resource Assignment ROMRAM IRQAudio Subsystem Integrated peripheral controller Diskette Drive InterfaceSerial ports Parallel port Keyboard and mouse portsNetwork connection Real-time clock and CmosFlash Eeprom Expansion adaptersPhysical layout Rocker switches ÝdimmLarge rocker switch settings Microprocessor Speed Cable connectors Connector panelSmall rocker switch settings Function 18 PC 300 GL and 300 PL USB 20 PC 300 GL and 300 PL Physical specifications PC 300 GL and PL desktopPC300 PL and GL tower Heat outputAirflow Acoustical noise-emission valuesPhysical specifications 24 PC 300 GL and 300 PL Power supply Power inputPower output Power input requirements Specification MeasurementsComponent outputs System board Supply voltage Maximum current ToleranceKeyboard port Supply voltage Maximum current Tolerance USB port Supply voltage Maximum current ToleranceConnector description Output protectionVideo port pin Supply voltage Maximum current Tolerance 28 PC 300 GL and 300 PL System software Plug and PlayConfiguration/Setup Utility program Advanced Power Management APMAdvanced Configuration and Power Interface Acpi Flash update utility programSystem compatibility Hardware compatibilityHardware interrupts Software compatibility Software interruptsMachine-sensitive programs Appendix A. Connector pin assignments Svga monitor connectorSvga monitor port connector pin assignments Pin Signal DDC2BDVI-I monitor connector System memory connectorVSS DQ0 DQ1DQ2 DQ3BA0 BA1 CK1 CK0CKE0 DQMB2System memory connector pin input/output Pin Signal name GND VDD WE#CAS# DQMB0# DQMB4# DQMB1#Vref GND CK2SA0 SDA SA0 VDDPCI connectors PCI connector pin assignments Pin SignalFRAME# IRDY#TRDY# DEVSEL#IDE connectors IDE connector pin assignments Pin SignalDiskette drive connector Diskette drive connector pin assignments Pin SignalMSEN0 MSEN1Power supply connector Wake on LAN connectorsUSB port connectors Mouse and keyboard port connectors Serial port connectorMouse port connector pin assignments Pin Signal Keyboard port connector pin assignments Pin SignalParallel port connector Parallel port connector pin assignments Pin SignalAppendix B. System address maps System memory mapFFFE0000-FFFFFFFF Input/output address map O address map Address hex Size DescriptionLPT3 COM2 LPT2LPT1 COM1DMA I/O address map PCI configuration space map 52 PC 300 GL and 300 PL Appendix C. IRQ and DMA channel assignments IRQ channel assignmentsSystem resource DMA channel assignments Data width System resource Appendix D. Error codes Post error codesBeep codes 56 PC 300 GL and 300 PL Appendix E. Notices and Trademarks IBM58 PC 300 GL and 300 PL Bibliography 60 PC 300 GL and 300 PL Index PCIUart