Dell Precision 610 Dell Precision WorkStation 610 Mini Tower Systems User's Gu - Page 165
Primary EIDE interface if Enabled in System Setup pro
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Problems can arise if two devices attempt to use the same IRQ line. To avoid this type of conflict, check the documentation for the default IRQ line setting for each installed device. Then consult Table B-9 to configure each device for one of the available IRQ or other lines. NOTE: Interrupts for the on-board sound, NIC, and both SCSI channels are assigned dynamically by the system basic input/output system (BIOS). IRQ0 System timer IRQ1 Keyboard controller IRQ2 Interrupt controller (enables IRQ8 through IRQ15) IRQ3 and IRQ4 Serial ports IRQ5 Available IRQ6 Diskette drive interface IRQ7 Parallel port IRQ8 RTC IRQ9 Available if ACPI is set to Off in System Setup program IRQ10 Available IRQ11 Available IRQ12 Mouse controller IRQ13 Math coprocessor IRQ14 Primary EIDE interface (if Enabled in System Setup program) IRQ15 Secondary EIDE interface (if Enabled in System Setup program) NOTE: For the full name of an abbreviation or acronym used in the table, see the Glossary. A processor and programs operating under MS-DOS (real-mode operation) can address only 1 megabyte (MB) (1024 kilobytes [KB]) of system memory. This area is Hardware Configuration Features B-17