Appendix
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26
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CPC3811CLD4N
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, but it
does not show the interrupt source occupied by the PCI devices.
Level
Function
IRQ0
System Timer
IRQ1
Standard 101/102 Keyboard or Microsoft Keyboard
IRQ2
Programmable Interrupt Controller
IRQ3
Serial Port #2
IRQ4
Serial Port #1
IRQ5
Reserved
IRQ6
Standard Floppy Disk Controller
IRQ7
Reserved
IRQ8
System CMOS/Real Time Clock
IRQ9
Software Transfer to Int 0Ah
IRQ10
Reserved
IRQ11
Reserved
IRQ12
Mouse Connector
IRQ13
Numeric Coprocessor
IRQ14
Master IDE
IRQ15
Slave IDE
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Summary of Contents for CPC-3811CLD4N
Page 1: ...CPC 3811CLD4N 3U CompactPCI Motherboard with Wide Temperature and Low Consumption Version C00...
Page 31: ......
Page 32: ...EVOC 2008 1 2 3 10 4 5 6 7 8 9 30...
Page 33: ...1 1 1 2 2 2 2 2 2 3 3 3 I O 3 4 4 6 CPC 3811CLD4N 1 8 8 JTAG 8 8 Compact PCI 9 11 USB 12 12...
Page 38: ...4 CPC 3811CLD4N 19 93 86 00 161 50 54 07 74 00 88 90 85 00 10 00 100 00 80 00 CPC 3811CLD4N 1...
Page 40: ...6 CPC 3811CLD4N D5 SW1 USB1 LAN1 VGA1 CONN1 JCC1 J2 JTAG1 J1 JP1 CPC 3811CLD4N 1...
