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PECIFICATIONS
P
RESARIO
N
OTEBOOK
M
AINTENANCE
AND
S
ERVICE
G
UIDE
1800 S
ERIES
Presario 1800 Series
Models: XL180, XL181, XL182, XL183, XL185,
and XL190, XL191, XL192
System Interrupts
System DMA
Hardware
IRQ
System Function
Hardware
IRQ
System Function
IRQ0 System Timer IRQ10 Available
IRQ1 Standard 101/102-Key or
Microsoft Natural Keyboard
IRQ11 Intel
®
Pro/100S Mobile LAN on
Motherboard
IRQ2 Programmable Interrupt
Controller
IRQ11 Texas Instruments PCI-1410
CardBus Controller
IRQ3 Lucent 56K V.90 PCI DF Modem IRQ11 ACPI IRQ Holder for PCI IRQ
Steering
IRQ3 ACPI IRQ Holder for PCI IRQ
Steering
IRQ11 Intel
®
82371AB/EB PCI to USB
Universal Host Controller
IRQ4 Communications Port (COM1) IRQ11 ACPI IRQ Holder for PCI IRQ
Steering
IRQ5 ESS SOLO-1 PCI AudioDrive IRQ12 Synaptics PS/2 TouchPad
IRQ5 ACPI IRQ Holder for PCI IRQ
Steering
IRQ13 Numeric Data Processor
IRQ5 RAGE Mobility AGP (English) IRQ14 Intel
®
82371AB/EB PCI Bus
Master IDE Controller
IRQ6 Standard Floppy Disk Controller IRQ14 Primary IDE Controller (Dual
FIFO)
IRQ7 Printer Port (LPT1) IRQ15 Intel 82371AB/EB PCI Bus
Master IDE Controller
IRQ8 System CMOS/Real Time Clock IRQ15 Secondary IDE Controller (Dual
FIFO)
IRQ9 SCI IRQ used by ACPI Bus
Hardware
DMA
System Function
DMA1 ESS SOLO-1 DOS Emulation
DMA2 Standard Floppy Disk Controller
DMA3 ECP Printer Port (LPT1)
DMA4 Direct Memory Access Controller