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Appendix C. IRQ and DMA channel assignments

The following tables list the interrupt request (IRQ) and direct memory access (DMA

channel assignments.

Table 36. IRQ channel assignments

IRQ System resource

NMI Critical system error

SMI System management interrupt - power management

0 Reserved (interval timer)

1 Reserved (keyboard)

2 Reserved, cascade interrupt from slave PIC

3COM2

4COM1

5 LPT2/audio (if present)

6 Diskette controller

7LPT1

8 Real-time clock

9ACPI

10 Available to user

11 Available to user

12 Mouse port

13 Reserved (math coprocessor)

14 Primary IDE (if present)

15 Secondary IDE (if present)

1 2 ... 55 56 57 58 59 60 61 62 63 64 65 ... 68 69

Technical Information Manual 1
PC 300PL Type 6565 1
Second Edition (March 2000) 3
Contents 4
Related publications 6
Terminology 7
Chapter 1. System Overview 8
2 PC 300 GL and 300 PL 9
ADSL modems 10
Wake on LAN 10
Wake on Ring 10
4 PC 300 GL and 300 PL 11
System memory 12
Features 12
L2 Cache 12
Chip set control 12
6 PC 300 GL and 300 PL 13
IDE bus master interface 14
USB interface 14
Video Subsystem 15
Audio Subsystem 17
Diskette Drive Interface 18
Serial ports 18
Parallel port 19
Keyboard and mouse ports 19
Network connection 20
Real-time clock and CMOS 20
Flash EEPROM 20
Expansion adapters 20
Physical layout 21
Rocker switches 22
16 PC 300 GL and 300 PL 23
Cable connectors 24
Connector panel 24
18 PC 300 GL and 300 PL 25
20 PC 300 GL and 300 PL 27
PC 300 GL and PL desktop 28
PC300 PL and GL tower 29
24 PC 300 GL and 300 PL 31
Chapter 4. Power supply 32
Component outputs 33
Output protection 34
Connector description 34
28 PC 300 GL and 300 PL 35
Chapter 5. System software 36
Flash update utility program 37
Diagnostic program 37
Hardware compatibility 38
Hardware interrupts 38
Software compatibility 39
Software interrupts 39
Machine-sensitive programs 39
SVGA monitor connector 40
DVI-I monitor connector 41
System memory connector 41
36 PC 300 GL and 300 PL 43
38 PC 300 GL and 300 PL 45
PCI connectors 47
IDE connectors 49
Diskette drive connector 50
Power supply connector 51
Wake on LAN connectors 51
USB port connectors 51
Serial port connector 52
Parallel port connector 53
System memory map 54
Input/output address map 55
DMA I/O address map 57
PCI configuration space map 58
52 PC 300 GL and 300 PL 59
54 PC 300 GL and 300 PL 61
Appendix D. Error codes 62
56 PC 300 GL and 300 PL 63
58 PC 300 GL and 300 PL 65
Bibliography 66
60 PC 300 GL and 300 PL 67
62 PC 300 GL and 300 PL 69

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