HP Vectra XM 5/xxx HP Vectra XM 5/xxx Series 3 - User Guide - Page 97

IRQs, DMAs, and I/O Addresses Used by Your PC

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5 Technical Information Specifications IRQs, DMAs, and I/O Addresses Used by Your PC IRQs used by PC 1 1 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. For information on current usage of IRQs, DMAs, and I/O addresses by your PC, type MSD at the MSDOS prompt. IRQ0 IRQ1 IRQ2 IRQ3 IRQ4 IRQ5 IRQ6 IRQ7 IRQ8 IRQ9 IRQ10 IRQ11 IRQ12 IRQ13 IRQ14 IRQ15 system timer keyboard system cascade free if not used for serial port free if not used for serial port free if not used for parallel port flexible disk drive controller free if not used for parallel port real-time clock available for PCI devices, if not used by ISA board available for PCI devices, if not used by ISA board available for PCI devices, if not used by ISA board free if the mouse is disabled in SETUP processor integrated IDE hard disk drive controller free if not used by second IDE controller DMAs used by PC DMA 0 DMA 1 DMA 2 DMA 3 DMA 4 DMA 5 DMA 6 DMA 7 free free if not used for parallel port in SETUP flexible disk drive controller free used to cascade DMA channels 0-3 free free free I/O Addresses used by PC 170h - 177h second IDE controller 1F0h - 1F7h integrated IDE hard disk controller 278h - 27Fh parallel port 2 2E8h - 2EFh serial port 4 2F8h - 2FFh serial port 2 3B0h - 3DFh integrated video graphics controller 376h - 377h second IDE controller 378h - 37Fh parallel port 1 3E8h - 3EFh serial port 3 3F0h - 3F7h integrated flexible disk controller 3F8h - 3FFh serial port 1 English 85

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English
85
5
Technical Information
Specifications
IRQs, DMAs, and I/O Addresses Used by Your PC
IRQs used by PC
1
1
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. For information
on current usage of IRQs,
DMAs, and I/O addresses by
your PC, type MSD at the MS-
DOS prompt.
IRQ0
system timer
IRQ1
keyboard
IRQ2
system cascade
IRQ3
free if not used for serial port
IRQ4
free if not used for serial port
IRQ5
free if not used for parallel port
IRQ6
flexible disk drive controller
IRQ7
free if not used for parallel port
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
free if the mouse is disabled in SETUP
IRQ13
processor
IRQ14
integrated IDE hard disk drive controller
IRQ15
free if not used by second IDE controller
DMAs used by PC
DMA 0
free
DMA 1
free if not used for parallel port in SETUP
DMA 2
flexible disk drive controller
DMA 3
free
DMA 4
used to cascade DMA channels 0-3
DMA 5
free
DMA 6
free
DMA 7
free
I/O Addresses used by PC
170h - 177h second IDE controller
1F0h - 1F7h integrated IDE hard disk controller
278h - 27Fh parallel port 2
2E8h - 2EFh serial port 4
2F8h - 2FFh serial port 2
3B0h - 3DFh integrated video graphics controller
376h - 377h second IDE controller
378h - 37Fh parallel port 1
3E8h - 3EFh serial port 3
3F0h - 3F7h integrated flexible disk controller
3F8h - 3FFh serial port 1