Irqs, Dmas, And I/O Addresses Used By Your Pc Workstation - HP Kayak XU800 Technical Notes

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

The IRQ, DMA, and I/O address mappings shown here are for a basic
configuration. The resources used by your PC Workstation may vary,
depending on which accessory boards are bundled with the
PC Workstation. Resources are allocated by the system BIOS or the
Plug and Play operating system.
IRQs used by
PC Workstation
DMAs used by
PC Workstation
IRQ0 System timer
IRQ1 Keyboard controller
IRQ2 Free
IRQ3 COM2, COM4
IRQ4 COM1, COM3
IRQ5 Free
IRQ6 Flexible disk drive controller
IRQ7 LPT1
IRQ8 Real-time clock
IRQ9 Free
IRQ10 Free
IRQ11 Free
IRQ12 Mouse
IRQ13 Not connected
IRQ14 Integrated IDE controller (primary)
IRQ15 Integrated IDE controller (secondary)
DMA 0 Capture
DMA 1 Playback
DMA 2 Flexible disk drive controller
DMA 3 LPT ECP
DMA 4 Cascade
DMA 5 free
DMA 6 free
DMA 7 free
System Specifications
English 9