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HP Kayak XU 04xx HP Kayak XU PC Workstation Technical Reference Manual Hardwar - Page 65

Interrupt Controllers, APIC controller. The Interrupt Requests IRQ are numbered sequentially

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4 HP BIOS BIOS Addresses Interrupt Controllers The system has an APIC (82093AA) I/O interrupt controller and two 82C59 "legacy" interrupt controllers. The following table shows how the "legacy" interrupts are connected to the APIC controller. The Interrupt Requests (IRQ) are numbered sequentially, starting with the master controller, and followed by the slave (both of 82C59 type). I/O APIC Input INTIN0 INTIN1 INTIN2 INTIN3 INTIN4 INTIN5 INTIN6 INTIN7 INTIN8 INTIN9 INTIN10 INTIN11 INTIN12 INTIN13 INTIN14 INTIN15 INTIN16 INTIN17 INTIN18 INTIN19 INTIN20 INTIN21 INTIN22 INTIN23 IRQ INTR IRQ1 IRQ0 IRQ3 IRQ4 IRQ5 IRQ6 IRQ7 IRQ8 IRQ9 IRQ10 IRQ11 IRQ12 not connected IRQ14 IRQ15 PCINTA PCINTB PCINTC PCINTD TFPC IRQ SCI IRQ not connected PIIX4 SM Interrupt Request Description NS317 Keyboard Controller PIIX4 System Timer NS317 COM2, COM4 NS317 COM1, COM3 AD1816, LPT2 NS317 Flexible Disk Controller NS317 LPT1 NS317 RTC AD1816 MIDI NS317 Mouse PIIX4 IDE 57

Section	Page
Technical Reference Manual	1
Notice	2
Preface	3
Conventions	3
Bibliography	3
How to use this online guide	4
Contents	5
System Overview	9
External Features	10
Internal Features	11
Specifications and Characteristic Data	11
Hardware Control Panel	11
Physical Characteristics	11
Electrical Specifications	12
Environmental Specifications	13
Documentation	14
Where to Find the Information	15
System Board	17
System Board	18
Architectural View	19
Chip-Set	20
The PAC Chip (440LX)	20
The PIIX4, PCI/ISA Bridge Chip (82371SB)	21
Devices on the Processor-Local Bus	23
Intel Pentium II Microprocessor	23
Cache Memory	25
Optional Second Microprocessor	26
Devices on the Main Memory Bus	27
Main Memory	27
Devices on the PCI Bus	28
Small Computer System Interface (SCSI) Controllers	28
Integrated Drive Electronics (IDE)	29
Universal Serial Bus (USB) Controller	30
Other PCI Accessory Devices	30
Accelerated Graphics Port (AGP) Controller	31
Devices on the SM Bus	32
Serial EEPROM	32
LM75 Chip	33
LM78 Chip	33
Main PLL	33
Devices on the ISA Bus	34
The Super I/O Controller (NS 87317)	34
Audio Controller	35
Flash EEPROM	35
Little Ben	38
Other ISA Accessory Devices	39
Interface Boards and Mass-Storage Drives	41
Matrox Millennium II Video Controller Board	42
Video Memory	43
Available Video Resolutions	43
Further Information	45
HP FastRAID Solution	46
10BT/100TX LAN Controller	49
10BT/100TX LAN Features	50
Remote Power On	50
Mass-Storage Drives	52
Hard Disk Drives (subject to change)	52
Flexible Disk Drives	52
CD-ROM Drives	52
Connectors and Sockets	53
HP BIOS	59
HP/Phoenix BIOS Summary	60
SCSISelect Utility	60
Power Saving and Ergonometry	61
Power-On from Space-Bar	61
Power Button Override	61
Package Intrusion Feature	61
BIOS Addresses	62
System Memory Map	62
HP I/O Port Map (I/O Addresses Used by the System 1 )	63
DMA Channel Controllers	64
Interrupt Controllers	65
PCI Interrupt Request Lines	67
Power-On Self-Test and Error Messages	69
Order in Which the Tests are Performed	70
Error Message Summary	77
Beep Codes	81