Little Board P6d Module

DMA channel not already in use. For your convenience, Table 2-7and Table 2-8provide a summary of the normal interrupt and DMA channel assignments on the Little Board P6d module.

The PCI bus uses four interrupts (INTA*, INTB*, INTC*, and INTD*). These interrupts are mapped to any of the available ISA interrupts by the BIOS. If an expansion card has multiple functions, then more interrupts may be required. You can set the priority in which interrupts are assigned on Setup 6 — PCI Configuration Setup.

 

Table 2-7. Interrupt Channel Assignments

 

 

Interrupt

Function

 

 

IRQ0

ROM BIOS clock tick function, from Timer 0

IRQ1

Keyboard interrupt

IRQ2

Cascade input for IRQ8-15

IRQ3

Serial 2, Serial 4

IRQ4

Serial 1, Serial 3

IRQ5

PCI

IRQ6

Floppy controller

IRQ7

Parallel port (option)

IRQ8

Reserved for battery-backed clock alarm

IRQ9

PCI

IRQ10

PCI, Serial 3, Serial 4

IRQ11

PCI

IRQ12

PS/2 Mouse, Serial 3, Serial 4

IRQ13

Reserved for coprocessor

IRQ14

Primary IDE hard disk controller

IRQ15

Secondary IDE hard disk controller

Note: IRQs for the Ethernet, Video, and Audio interfaces are automatically assigned by the BIOS plug and play logic.

PCI Interrupts assigned during initialization cannot be used by non-PCI devices.

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Ampro Corporation 5001451A manual Interrupt Function

5001451A specifications

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