System Interrupts; System Dma - Compaq Presario,Presario 18XL191 User Manual

System Interrupts

Hardware
System Function
IRQ
IRQ0 System Timer
IRQ1 Standard 101/102-Key or
Microsoft Natural Keyboard
IRQ2 Programmable Interrupt
Controller
IRQ3 Lucent 56K V.90 PCI DF Modem IRQ11
IRQ3 ACPI IRQ Holder for PCI IRQ
Steering
IRQ4 Communications Port (COM1)
IRQ5 ESS SOLO-1 PCI AudioDrive
IRQ5 ACPI IRQ Holder for PCI IRQ
Steering
IRQ5 RAGE Mobility AGP (English)
IRQ6 Standard Floppy Disk Controller IRQ14
IRQ7 Printer Port (LPT1)
IRQ8 System CMOS/Real Time Clock
IRQ9 SCI IRQ used by ACPI Bus

System DMA

Hardware
System Function
DMA
DMA1 ESS SOLO-1 DOS Emulation
DMA2 Standard Floppy Disk Controller
DMA3 ECP Printer Port (LPT1)
DMA4 Direct Memory Access Controller
2 S
PECIFICATIONS
Presario 1800 Series
Models: XL180, XL181, XL182, XL183, XL185,
and XL190, XL191, XL192
Hardware
System Function
IRQ
IRQ10 Available
®
IRQ11 Intel Pro/100S Mobile LAN on
Motherboard
IRQ11 Texas Instruments PCI-1410
CardBus Controller
ACPI IRQ Holder for PCI IRQ
Steering
®
IRQ11 Intel 82371AB/EB PCI to USB
Universal Host Controller
IRQ11 ACPI IRQ Holder for PCI IRQ
Steering
IRQ12 Synaptics PS/2 TouchPad
IRQ13 Numeric Data Processor
®
IRQ14 Intel 82371AB/EB PCI Bus
Master IDE Controller
Primary IDE Controller (Dual
FIFO)
IRQ15 Intel 82371AB/EB PCI Bus
Master IDE Controller
IRQ15 Secondary IDE Controller (Dual
FIFO)
P N M
RESARIO OTEBOOK AINTENANCE AND
S G 1800 S
ERVICE UIDE ERIES