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88 Appendix A: BIOS reference
By selecting No, the ESCD area is maintained, and the BIOS configures the
devices according to the specifications in this area, resulting in a faster boot. By
selecting Yes, the ESCD area is cleared and reconfigured.
If an IRQ conflict occurs after you install a new device, change this menu item’s
setting to Yes to have the BIOS clear and reconfigure the ESCD area upon
rebooting. This might rectify the conflict. Upon rebooting, this menu item is
automatically reset to No.
Options:
-No (default)
-Yes
• Legacy USB Support.
This item allows you to enable or disable support on the USB ports for legacy
devices, such as a keyboard or mouse.
Options:
-Disabled
-Enabled (default)
• Local Bus IDE adapter.
This item allows you to enable or disable the primary ATA 44-pin and secondary
ATA 40-pin interface. The primary ATA 44-pin interface uses IRQ14, and the
secondary ATA 40-pin interface uses IRQ15. If, however, one of these IRQs is
required for another device, you can disable one of the interfaces, and free up an
IRQ line.
By selecting Disabled, both interfaces will be disabled, making IRQ14 and IRQ15
available. By selecting Primary, only the primary ATA 44-pin interface will be
enabled, making IRQ15 available. By selecting Secondary, only the secondary
ATA 40-pin interface will be enabled, making IRQ14 available. By selecting Both,
the primary and secondary interfaces will be enabled, so neither IRQ14 nor IRQ15
will be available.
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