Datasheet

Intel Desktop Board D865PERL Technical Product Specification
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✏ NOTE
If the battery and AC power fail, custom defaults, if previously saved, will be loaded into CMOS
RAM at power-on.
1.7.5 Intel
®
82802AB Firmware Hub (FWH)
The 4 Mbit FWH provides the following:
• System BIOS program
• Logic that enables protection for storing and updating of platform information
1.8 I/O Controller
The I/O controller provides the following features:
• One serial port
• One parallel port with Extended Capabilities Port (ECP) and Enhanced Parallel Port
(EPP) support
• Serial IRQ interface compatible with serialized IRQ support for PCI systems
• PS/2-style mouse and keyboard interfaces
• Interface for one 1.2 MB or 1.44 MB diskette drive
• Intelligent power management, including a programmable wake-up event interface
• PCI power management support
The BIOS Setup program provides configuration options for the I/O controller.
For information about Refer to
SMSC LPC47M172 I/O controller http://www.smsc.com
National Semiconductor PC87372 I/O Controller http://www.national.com
1.8.1 Serial Port
The board has one serial port connector located on the back panel. The serial port supports data
transfers at speeds up to 115.2 kbits/sec with BIOS support.
For information about Refer to
The location of the serial port connector Figure 19, page 60
1.8.2 Parallel Port
The 25-pin D-Sub parallel port connector is located on the back panel. Use the BIOS Setup
program to set the parallel port mode.
For information about Refer to
The location of the parallel port connector Figure 19, page 60
Setting the parallel port’s mode Table 59, page 101