16
Chapter 1
NOTE:
The BIOS automatically assigns IRQs to devices in the system for legacy compatibility. No method is
provided to manually configure the IRQs for devices.
IRQ Assignment Map
ISA Interrupt
Description
IRQ0
Timer/counter, HPET #0 in legacy replacement Mode. In APIC mode,
cascade from 8259 controller #1
IRQ1
keyboard
IRQ2
Slave controller INTR output. In APICmode timer/counter, HPET#0
IRQ3
Serial port A
IRQ4
Serial port B
IRQ5
Parallel Port (Not implemented)
IRQ6
Floppy
IRQ7
Parallel port, generic (Not implemented)
IRQ8
RTC/HPET#1 in legacy replacement mode
IRQ9
Generic, Option for SCI
IRQ10
Generic, Option for SCI
IRQ11
HPET#2, option for SCSI, TCO
IRQ12
PS2 Mouse
IRQ13
FERR
IRQ14
Primary ATA, legacy mode
IRQ15
Secondary ATA, legacy mode
PIRQA
USB 2.0 Controller #1 and #4
PIRQB
Video
PIRQC
USB 2.0 Controller #3, Native IDE, S-ATA
PIRQD
USB 2.0 Controller #2
PIRQE
Option for SCI, TCO, HPET#0,1,2
PIRQF
Option for SCI, TCO, HPET#0,1,2
PIRQG
Option for SCI, TCO, HPET#0,1,2
PIRQH
USB 2.0 EHCI controller #1, option for SCI, TCo, HPET#0, 1, 2
Ser IRQ
SIO3
Содержание Altos R510
Страница 6: ...VI ...
Страница 13: ...4 Chapter 1 System Block Diagram ...
Страница 68: ...61 Chapter 3 B A TP01301 ...
Страница 72: ...65 Chapter 3 ...
Страница 91: ...Chapter 3 84 TP01167 B C D F A E F E D B C ...
Страница 138: ...131 Chapter 5 ...
Страница 143: ...151 Appendix C ...