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Sys tem in ter rupts ( irqs ) 24, Dma chan nel as sign ments 24, Irqs 24 – Intel SBC-370 User Manual

Page 22: Sys tem in ter rupts 24, System interrupts (irqs) dma channel assignments, System interrupts (irqs), Dma channel assignments

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SYSTEM INTERRUPTS (IRQS)

IRQ

Description

IRQ0

System Timer

IRQ1

Keyboard

IRQ2

Cascade to IRQ Controller

IRQ3

COM2/COM4

IRQ4

COM1/COM3

IRQ5

Unused

IRQ6

Floppy Drive (FDC)

IRQ7

Printer

IRQ8

Real Time Clock

IRQ9

Unused

IRQ10

Unused

IRQ11

Unused

IRQ12

PS/2 Mouse

IRQ13

FPU

IRQ14

Primary IDE

IRQ15

Secondary IDE

DMA CHANNEL ASSIGNMENTS

Channel

Function

0

Available

1

Available

2

Floppy disk ( 8-bit transfer )

3

Available

4

Cascade for DMA Controller 1

5

Available

6

Available

7

Available

Board Configuration

24