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Chapter 3
USB Function
The item is used to enable or disable the USB ports. Settings are Enabled
and Disabled.
Legacy USB Support
Set to Enabled if your need to use an USB device in the operating system
that does not support or have any USB driver installed, such as DOS and
SCO Unix. Selecting Auto allows BIOS to automatically detect the presence
of USB device and enable it.
ARMD Emulation Type
The item tells BIOS which type of emulation is used for the ARMD device
connected to the USB connectors. ARMD device includes ZIP drive and
LS-120 and so on. Settings are Auto, Floppy, and Hard Disk.
IRQ3/4/5/7/9/10/11/14/15, DMA Channel 0/1/3/5/6/7
These IRQ & DMA resources allow users to set each IRQ/DMA depending
on the type of device using the IRQ/DMA. The settings determine if BIOS
should remove a DMA or IRQ from the available DMAs/IRQs passed to
devices that are configurable by the system BIOS. The available DMA/IRQ
pool is determined by reading the ESCD NVRAM. End users can reserve the
DMA or IRQ by assigning an Reserved setting to it. Settings are as below:
Available
Reserved
Reserved Memory Size
The item determines how much memory will be reserved for legacy ISA
adapter. Settings are Disabled, 16k, 32k and 64k.
Resources will be allocated to Plug & Play compat-
ible devices by BIOS.
Resources will be reserved for devices compliant
with the PC AT bus specification, requiring a
specific interrupt.
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