A d v a n c e d M e n u
IRQ Reservation Submenu of the PCI Configurations Submenu
The IRQ Reservation submenu of the PCI Configurations submenu allows the user to mark various IRQs as reserved for use by legacy ISA devices. When an IRQ is reserved, the BIOS does not use it for embedded PCI or ISA devices.
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| PhoenixBIOS Setup Utility |
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| Main | Advanced | Security | Power Savings | Exit | |
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| IRQ Reservation |
| Item Specific Help |
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| IRQ 3: | [Available] |
| Reserve the specified |
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| IRQ 4: | [Available] |
| IRQ for use by legacy |
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| IRQ 5: | [Available] |
| ISA devices. |
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| IRQ 7: | [Available] |
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| IRQ 9: | [Available] |
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| IRQ 10: | [Available] |
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| IRQ 11: | [Available] |
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F1 | Help | Select | Item |
ESC | Exit | Select | Menu |
Change | Values | |
Enter | Select | ▲ |
F9 Setup Defaults
F10 Save and Exit
Figure 9. IRQ Reservation Submenu
Table 9: Fields, Options and Defaults for the IRQ Reservation Submenu of the PCI Configurations Submenu
Menu Field | Options | Default | Description |
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IRQ 3: | • Available | [Available] | Reserves IRQ 3. If Reserved is selected, BIOS reserves IRQ 3 for use by |
| • Reserved |
| legacy ISA devices and does not use it for embedded PCI/ISA devices. |
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| IRQ 3 is removed from the IRQ bitmap in the PCI IRQ routing table. |
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IRQ 4: | • Available | [Available] | Reserves IRQ 4. |
| • Reserved |
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IRQ 5: | • Available | [Available] | Reserves IRQ 5. |
| • Reserved |
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IRQ 7: | • Available | [Available] | Reserves IRQ 7. |
| • Reserved |
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IRQ 9: | • Available | [Available] | Reserves IRQ 9. |
| • Reserved |
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IRQ 10: | • Available | [Available] | Reserves IRQ 10. |
| • Reserved |
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IRQ 11: | • Available | [Available] | Reserves IRQ 11. |
| • Reserved |
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