BIOS Overview
Interrupt Controllers
The Interrupt Requests (IRQs) are numbered sequentially, starting with the master controller, and
followed by the slave.
46 Evo D310 Micro Desktop
Channel
Function
0
Free
1
Free if not used for parallel port in Setup
2
Floppy disk controller
3
Free if not used for parallel port in Setup
4
Used to cascade DMA channels 0-3
5
Free
6
Free
7
Free
Windows 2000 and Windows XP
IRQ
(Interrupt Vector)
INTR
ISA0
System Timer
ISA1
Standard 101/102-Key or Microsoft Natural PS/2 keyboard
ISA3
Communication Port (COM2)
ISA4
Communication Port (COM1)
ISA6
Standard Floppy Disk Controller
ISA8
System CMOS/real time clock
ISA9
Microsoft ACPI-Compliant System
ISA12
PS/2 Compatible Mouse
ISA13
Numeric data processor
ISA14
Primary IDE Channel
ISA15
Secondary IDE Channel
PCI5
Intel(R) 82801BA/BAM SMBus Controller - 2443
PCI17
Intel(R) 82801BA/BAM AC'97 Audio Controller - 2445
PCI19
Intel(R) 82801BA/BAM USB Universal Host Controller - 2442
PCI20
Intel(R) PRO/100 VE Network Connection
PCI 23
Intel(R) 82801BA/BAM USB Universal Host Controller - 2444
DMA controller
Interrupt Request Description