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2-2 System Configuration
This section provides information for configuring the system. The section
describes:
system interrupt request (IRQ) assignments
system board jumper settings
descriptions of video modes
the BIOS Setup utility to configure the system
the Symbios Configuration Utility
the FLASH utility
NEC OS Restore CD
NEC Select Install CD
Interrupt Requests
The following paragraphs list the system interrupts (IRQs), parallel addresses
and interrupts, and serial addresses and interrupts. Section 4, “System Board,”
includes information on system resources (memory map, I/O addresses, and
DMA settings).
System Interrupts
The system has 16 IRQs (IRQ 0 through 15) assigned to different devices (for
example, printer, modem, keyboard, or mouse). Initial IRQ settings are assigned
at the factory, with settings dependent on the installed device(s). Several IRQs
are unassigned for the installation of add-on devices. See “BIOS Setup Utility”
in this section for information on using the utility to assign or change the
interrupts.
The following table lists the IRQ settings. Note that assignments 0 through 15
are in order of decreasing priority.
Interrupt Level Assignments
Interrupt
I/O APIC level
Description
INTR
INT0
Processor interrupt
NMI
N/A
NMI from BUD to processor
IRQ0
INT2
Timer interrupt from PIIX4
IRQ1
INT1
Keyboard interrupt
IRQ2
Interrupt signal from second 8259 in PIIX4
IRQ3
INT3
Serial port A or B interrupt from 87309VLJ device (user
can configure)
Summary of Contents for POWERMATE PROFESSIONAL 9000E - SERVICE
Page 14: ...1 System Overview Configurations Features Components ...
Page 92: ...4 System Board Sockets and Connectors Jumpers Components Resources ...
Page 120: ...5 Expansion Boards Sound Board Graphics Board Network Board ...
Page 132: ...7 Preventive Maintenance System Cleaning Keyboard Cleaning Mouse Cleaning ...
Page 136: ...8 Troubleshooting Checklist Diagnostics ...
Page 176: ...A Release Notes General Notes Windows NT Issues ...