HP 18XL381 manual System Interrupts, Hardware System Function

Presario 1800/1800T Series

Models: XL280, XL380, XL381,

and XL390

System Interrupts

Hardware	System Function	Hardware	System Function
IRQ		IRQ

IRQ 0 IRQ 1

IRQ 2

IRQ 3

IRQ 3

IRQ 4

IRQ 5 IRQ 5

IRQ 5

IRQ 6

IRQ 7

IRQ 8

IRQ 9

System timer

Standard 101/102-key or Microsoft Natural Keyboard

Programmable Interrupt Controller

Lucent 56K V.90 PCI DF Modem

ACPI IRQ Holder for PCI IRQ Steering

Communications Port (COM1)

ESS SOLO-1 PCI AudioDrive

ACPI IRQ Holder for PCI IRQ Steering

RAGE Mobility AGP (English)

Standard Floppy Disk Controller

Printer Port (LPT1)

System CMOS/Real Time Clock

SCI IRQ used by ACPI Bus

IRQ 10 IRQ 11

IRQ 11

IRQ 11

IRQ 11

IRQ 11

IRQ 12 IRQ 13

IRQ 14

IRQ 14

IRQ 15

IRQ 15

Available

Intel® Pro/100S Mobile LAN on Motherboard

Texas Instruments PCI-1410 CardBus Controller

ACPI IRQ Holder for PCI IRQ Steering

Intel® 82371AB/EB PCI to USB Universal Host Controller

ACPI IRQ Holder for PCI IRQ Steering

Synaptics PS/2 TouchPad

Numeric Data Processor

Intel® 82371AB/EB PCI Bus Master IDE Controller

Primary IDE Controller (Dual

FIFO)

Intel® 82371AB/EB PCI Bus

Master IDE Controller

Secondary IDE Controller (Dual FIFO)

System DMA

Hardware System Function

DMA

DMA 1

DMA 2

DMA 4

ESS SOLO-1 DOS Emulation

Standard Floppy Disk Controller

Direct Memory Access Controller

2 SPECIFICATIONS PRESARIO NOTEBOOK MAINTENANCE AND SERVICE GUIDE 1800 SERIES