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5 HP BIOS
BIOS Addresses
IRQs Used by the PC Workstation
The IRQ address mappings shown here are for a basic configuration. The
resources used by the PC Workstation may vary, depending on which
accessory cards 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
IRQ6 Flexible disk drive controller
IRQ7 LPT1
IRQ8 Real-time clock
IRQ9
IRQ10
IRQ11
IRQ12 Mouse
IRQ13 Not connected
IRQ14 Integrated IDE controller (primary)
IRQ15 Integrated IDE controller (secondary)
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