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The I/O controller integrates the functions for the
serial ports, parallel port, diskette drive, and
keyboard. This component provides:
Multimode bidirectional parallel port:
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operation
capabilities port (ECP) and enhanced
parallel port (EPP)
Two RS-232C NS16C450/550compatible
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Integrated real-time clock with an accuracy of
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Integrated 8042compatible keyboard
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controller
Flexible IRQ and DMA mapping to support
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Support for an IrDAt or Consumer IR
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compatible infrared interface. The infrared
interface supports data transfer rates of up to
115
K baud with either half- or full-duplex
operation
Industry standard diskette drive controller
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that supports 720 KB, 1.44 MB, and 2.88 MB
360 KB and 1.2 MB 5.25-inch drives
BIOS Features
The BIOS, from American Megatrends, Inc.
BIOS is contained in a Flash memory device
soldered to the motherboard. The BIOS
provides the POST, the Setup program, a PCI
and IDE auto-configuration utility, and BIOS
recovery code.
PCI Auto-configuration
The PCI auto-configuration utility works in
conjunction with the Setup program to support
using PCI add-in cards in the computer. When
you turn on the power after installing a PCI card,
the BIOS automatically configures interrupts,
DMA channels, and I/O space. Since PCI add-in
cards use the same interrupt resources as ISA
add-in cards, you must specify the interrupts
used by ISA cards in the Setup program. The
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