Irq assignments – Sony PCV-LX920 User Manual
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VAIO Slimtop System Reference Manual
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IRQ Assignments
IRQ #
Default Assignment
(ISA) 0
System timer
(ISA) 1
Standard 101/102-Key or Microsoft® Natural PS/2® Keyboard
(ISA) 3
Communications Port (COM2)
(ISA) 4
Communications Port (COM1)
(ISA) 8
System CMOS/real time clock
(ISA) 9
Microsoft ACPI-Compliant System
(ISA) 12
PS/2 Compatible Mouse
(ISA) 13
Numeric data processor
(ISA) 14
Primary IDE Channel
(ISA) 15
Secondary IDE Channel
(PCI) 9
Lucent Win Modem
(PCI) 9
Ricoh R/RL/RT/RC/5C475(II), R5C520 or compatible CardBus
Controller
(PCI) 9
SiS 630/730
(PCI) 9
SiS 7001 PCI to USB Open Host Controller
(PCI) 9
SiS 7001 PCI to USB Open Host Controller
(PCI) 9
SiS 7018 Audio Driver
(PCI) 9
SiS 900 PCI Fast Ethernet Adapter
(PCI) 9
Sony Memory Stick® controller (PCI)
(PCI) 9
Texas Instruments OHCI Compliant IEEE 1394 Host Controller
✍
This shows the factory default values. Windows® XP operating system reassigns
resources to best meet the needs of a particular configuration. PCI IRQs can be shared
between several PCI devices.