Chapter 3 BIOS Setup
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CPC-1817CLD5NA
IRQ Assignment Table
There are 15 interrupt sources of the system. Some are occupied by the system
devices. Only the ones that are not occupied can be distributed. The ISA devices
claim to engross the interrupt. Only the plug and play ISA devices can be distributed
by the BIOS or the OS. And several PCI devices share one interrupt through the
distribution of BIOS or OS. The diagram below shows parts of the interrupt
distribution under X86 platform, but it does not show the interrupt source occupied by
the PCI devices.
Level
Function
IRQ0 System
Timer
IRQ1 PS2
Keyboard
IRQ2 Reserved
IRQ3 COM#2
IRQ4 COM#1
IRQ5 Reserved
IRQ6
Standard floppy disk controller
IRQ7 Reserved
IRQ8
System CMOS/Real Time Clock
IRQ9 ACPI-Compliant
System
IRQ10 Reserved
IRQ11 COM#3
IRQ12 Mouse
IRQ13
Numeric data processor
IRQ14
Primary IDE Channel
IRQ15 Secondary
IDE
Channel
Summary of Contents for CPC-1817CLD5NA
Page 1: ...CPC 1817CLD5NA 6U Compact PCI 6U Compact PCI Board Compliant with Navy Standard Version C01...
Page 2: ...EVOC 2011 http www evoc com support evoc com support evoc cn 4008809666...
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Page 4: ...1 1 2 2 2 3 3 3 4 4 4 4 Watchdog 4 4 I O 4 6 6 7 8 9 CPCI 11 USB 12 SATA 12 13...
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Page 51: ...46 CPC 1817CLD5NA CMOS 1 BIOS CMOS 2 U USB2 0 USB1 1 3 U USB USB FULLSPEED HISPEED 4...
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