MVP3 ATX
SYSTEM BOARD
AWARD BIOS SETUP
4-41
Note: Most IRQ and DMA have its own purpose and they can not be assigned to
“PCI/ISA PnP”. For example, IRQ14 and IRQ15 are used by the onboard
IDE device. If you change the setting on IRQ14 and IRQ15, you will be
unable to connect the hard disk drive or CD-ROM drive to the IDE interface
on the mainboard. So please make sure to check the IRQ and DMA
assignment in your system before you proceed to do the setting. For instance,
if you do not have the printer (IRQ7) or PS/2™ mouse (IRQ12) connected to
your PC system, you may assign IRQ7 and IRQ12 to “PCI/ISA PnP” so that
you can have more IRQs available for new add on cards.
Explanation for technical issue:
PnP device :
Device that has Plug & Play compatibility. That means it will request for DMA,
IRQ, I/O and Memory from the PnP BIOS and all these requests can be re-
locatable. In other words, these devices do not utilize any fixed resources.
All PCI devices and all ISA PnP devices are PnP devices.
Legacy device :
A legacy device is a device that all its resources are fixed by hardware (or selected
by jumpers).
All ISA Non-PnP devices are legacy device.
Extended System Configuration Data (ESCD) :
A media between the user and the system BIOS for passing the legacy devices
information‘s. This information is stored in the onboard NVRAM (flash ROM).
