Irqs, Dmas, And I/O Addresses Used By Your Pc - HP Vectra XA 6/xxx User Manual
Hp vectra xa 6/xxx, user's guide for desktop models
Hide thumbs
Also See for Vectra XA 6/xxx:
- User manual (18 pages) ,
- Service handbook (11 pages) ,
- Replacement manual (2 pages)
Table of Contents
Advertisement
3 Troubleshooting Your PC
Technical Information Needed for Troubleshooting
IRQs, DMAs, and I/O Addresses Used by Your PC
IRQs used by PC
The IRQ, DMA, and I/O address
mappings shown here are for a
PC with a basic configuration.
The resources used by your PC
may vary, depending upon
which accessory boards are
bundled with the PC.
DMAs used by PC
I/O Addresses used by PC
52
English
IRQ0
system timer
IRQ1
keyboard
IRQ2
system cascade
IRQ3
free if not used for serial port 2
IRQ4
free if not used for serial port 1
IRQ5
free if not used for parallel port 2
IRQ6
flexible disk drive controller
IRQ7
free if not used for parallel port 1
IRQ8
real-time clock
IRQ9
available for PCI devices, if not used by ISA board
IRQ10
available for PCI devices, if not used by ISA board
IRQ11
available for PCI devices, if not used by ISA board
IRQ12
mouse
IRQ13
co-processor
IRQ14
integrated IDE hard disk drive controller
IRQ15
free if not used by second IDE controller
DMA 0
free
DMA 1
free if not used for parallel port in Setup
DMA 2
flexible disk drive controller
DMA 3
free if not used for parallel port in Setup
DMA 4
used to cascade DMA channels 0-3
DMA 5
free
DMA 6
free
DMA 7
free
2Eh - 2Fh, integrated I/O controller
96h - 97h, "Little Ben"
E0h - E7h, HP reserved
170h - 177h, 376h IDE secondary channel
1F0h - 1F7h, 3F6h IDE primary channel
278h - 27Fh parallel port 2
2E8h - 2EFh serial port 4
2F8h - 2FFh serial port 2
378h - 37Fh parallel port 1
3B0h - 3DFh integrated video graphics controller
3E8h - 3EFh serial port 3
3F0h - 3F5h, 3F7h integrated flexible disk controller
3F8h - 3FFh serial port 1
496h - 497h HP reserved
678h - 67Dh parallel port if ECP mode is selected
778h - 77Dh parallel port if ECP mode is selected
Advertisement
Table of Contents
Troubleshooting
