Accelerated Graphics Port (Agp); Communication And Networking Riser (Cnr) (Optional); Audio Subsystem; Bios - Intel D845BG Product Manual

Accelerated Graphics Port (AGP)

✏
NOTE
The D845PT and D845BG boards are only compatible with 1.5 V AGP cards.
AGP is a high-performance interface for graphics-intensive applications, such as 3D graphics.
AGP is independent of the PCI bus and is intended for exclusive use with graphical
display devices.
The AGP connector supports 1.5 V AGP 4X and 2X add-in cards. The boxed desktop board comes
with either an integrated AGP card rentention mechanism (RM) or an AGP RM that you will need
to install on the board. The AGP card retention mechanism is used only with cards with retention
notches (see Figure 13 on page 33). For information about installing the AGP card retention
mechanism and an AGP card, see Chapter 2 on page 22.

Communication and Networking Riser (CNR) (Optional)

The optional CNR provides an interface that supports various features such as audio, modem,
USB, and LAN.

Audio Subsystem

The audio subsystem features the following:
•
Intel 82801BA ICH2
•
Analog Devices AD1885 analog codec (AC '97)
✏
NOTE
The line out connector, located on the back panel, is designed to power either headphones or
amplified speakers only. Poor audio quality may occur if passive (non-amplified) speakers are
connected to this output.
Audio drivers and utilities are available from Intel's customer support World Wide Web site:
http://support.intel.com/support/motherboards/desktop/

BIOS

The BIOS provides the Power-On Self-Test (POST), the BIOS Setup program, the PCI and IDE
auto-configuration utilities, and the video BIOS. The BIOS is stored in the Firmware Hub.
The BIOS can be updated by following the instructions in Chapter 3 on page 43.

PCI Auto Configuration

If you install a PCI add-in card in your computer, the PCI auto-configuration utility in the BIOS
automatically detects and configures the resources (IRQs, DMA channels, and I/O space) for that
add-in card. You do not need to run the BIOS Setup program after you install a PCI add-in card.
Desktop Board Features
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