4 Summary of the HP/Phoenix BIOS

HP/Phoenix BIOS (BIOS version: GX.07.xx)

 

IRQ15(77h)

Free, if not used by secondary channel of IDE controller

 

 

 

IRQ3(0Bh)

 

Free, if not used for serial port

 

 

 

IRQ4(0Ch)

 

Free, if not used for serial port

 

 

 

IRQ5(0Dh)

 

Free, if not used for parallel port

 

 

 

IRQ6(0Eh)

 

Floppy disk drive controller

 

 

 

IRQ7(0Fh)

 

Free, if not used for parallel port

 

 

 

Using the Setup program:

•IRQ3 can be made available by disabling serial ports 2 and 4.

•IRQ4 can be made available by disabling serial ports 1 and 3.

•IRQ5 can be made available by disabling the parallel port 2.

•IRQ7 can be made available by disabling parallel ports 1 and 2.

•IRQ12 can be made available by disabling the mouse interrupt.

PCI Interrupt Request Lines (BIOS version: GX.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 re-directed to the system interrupt controller. The interrupt request will be re-directed to one of the IRQ lines made available for PCI devices.

All PCI devices with interrupt transfer support will use and share INTA#.

A multiple-function PCI device may use several INT lines. These devices will require more than one system interrupt request line.

Power-On Self-Test (BIOS version: GX.07.xx)

This section describes the Power-On Self-Test (POST) routines, which are contained in the PC’s ROM BIOS, the error messages which can result, and the suggestions for corrective action.

Each time the system is powered on, or a reset is performed, the POST is executed. The POST process verifies the basic functionality of the system components and initializes certain system parameters. The POST performs the tests in the order described in the table on the next page.

The POST starts by displaying a graphic screen with the initial HP “Vectra” logo. If the POST detects an error, the error message is displayed inside a view system errors screen, in which the error message utility (EMU) not only displays the error diagnosis, but the suggestions for corrective action. Error codes are no longer displayed.

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