S y s t e m m o t h e r b o a r d
3/8 LS700 HANDBOOK
♦
Multimode bidirectional parallel port:
◊
Standard mode: Centronics-compatible operation
◊
High-speed mode: support for enhanced capabilities
port (ECP) and enhanced parallel port (EPP)
♦
Two RS-232C (16550-compatible) 9-pin serial ports
♦
Integrated real-time clock with an accuracy of ±13
minutes/year at 25
°
C and 5 V
♦
Integrated 8042-compatible keyboard controller
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Flexible IRQ and DMA mapping to support
Windows 95
♦
Support for an IrDA
or Consumer IR 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 that supports
720 KB, 1.44 MB, and 2.88 MB floppy drives (at 135
tracks per inch); and the older 360 KB and 1.2 MB drives.
BIOS Features
The BIOS, from American Megatrends Inc. (AMI), provides
ISA and PCI compatibility. The 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. For
full information see the ‘BIOS and Setup’ chapter.
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.