4 Summary of the HP/Phoenix BIOS HP/Phoenix BIOS (BIOS version: GJ.07.xx)
| IRQ12(74h) | Mouse |
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| IRQ13(75h) | Pentium processor |
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| IRQ14(76h) | Integrated primary IDE hard disk controller |
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| IRQ15(77h) | Free, if not used by secondary channel of IDE controller1 (CD- |
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| ROM) |
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IRQ3(0Bh) |
| Free, if not used used for serial port2 |
IRQ4(0Ch) |
| Free, if not used used for communications card or serial port2 |
IRQ5(0Dh)3 |
| Free, if not used used for expansion card or parallel port4 |
IRQ6(0Eh) |
| Floppy disk drive controller |
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IRQ7(0Fh) |
| Free, if not used used for parallel port3 |
1.IRQ15 can be made available by disabling the secondary channel of the IDE controller in the SETUP program.
2.IRQ3 and IRQ4 can be made available by disabling the serial ports in the SETUP program.
3.If there is a need to use another IRQ for the sound card, the following Interrupt Vectors can be used: IRQ2, IRQ7 and IRQ10.
4.IRQ5 and IRQ7 can be made available by disabling the parallel ports in the SETUP program.
PCI Interrupt Request Lines
(BIOS version: GJ.07.xx)
PCI devices generate interrupt requests using up to four PCI interrupt request lines (INTA#, INTB#, INTC#, and INTD#).
When a PCI device makes an interrupt request, the request is
All PCI devices with interrupt transfer support will use and share INTA#.
A
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