Irqs, Dmas, And I/O Addresses Used By Your Pc - HP Vectra XA 5/xxx User Manual

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

IRQs used by PC IRQ0
IRQ1
The IRQ, DMA, and IRQ2
I/O address IRQ3
mappings shown IRQ4
here are for a PC IRQ5
with a basic IRQ6
configuration. The IRQ7
resources used by
IRQ8
your PC may vary, IRQ9
depending upon IRQ10
which accessory IRQ11
boards are bundled IRQ12
with the PC. IRQ13
IRQ14
IRQ15
DMAs DMA 0
used by PC DMA 1
DMA 2
DMA 3
DMA 4
DMA 5
DMA 6
DMA 7
I/O Addresses 170h - 177h, 376h IDE secondary channel
used by PC 1F0h - 1F7h, 3F6h IDE primary channel
278h - 27Fh (and 3A8h) parallel port
2E8h - 2EFh serial port
2F8h - 2FFh serial port
370h - 371h integrated I/O controller
378h - 37Fh parallel port
3B0h - 3DFh (3B0-3BB,3O0-3DF) integrated video graphics controller
3E8h - 3EFh serial port
3F0h - 3F5h, 3F7h integrated flexible disk controller
3F8h - 3FFh serial port
496h - 497h HP reserved
678h - 67Bh parallel port if ECP mode is selected
778h - 77Bh parallel port if ECP mode is selected
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
mouse
co-processor
integrated IDE hard disk drive controller
free if not used by second IDE controller
free
free if not used for parallel port in Setup
flexible disk drive controller
free if not used for parallel port in Setup
used to cascade DMA channels 0-3
free
free
free
3 Troubleshooting Your PC
Technical Information
English 59