HP XU - Manual (Page 102)

4 Technical Information
System Specifications
86 English
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 IRQ0 System timer
IRQ1 Keyboard controller
IRQ2 Free
IRQ3
COM2, COM4
IRQ4 COM1, COM3
IRQ5 AD1816, LPT2
IRQ6 Flexible disk drive controller
IRQ7 LPT1
IRQ8
Real-time clock
IRQ9
IRQ10
IRQ11
AD1816 MIDI
IRQ12 Mouse
IRQ13 Not
connected
IRQ14 Integrated IDE controller
IRQ15
DMAs used by
PC Workstation 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
crystal.bk : cryst-4.fb4 Page 86 Monday, March 23, 1998 4:09 AM