Details Of Bpp Configuration Modes - Intel D845GLLY Using Manual

Technical Product Specification for Intel Desktop Boards using the Intel 845GL Chipset
Table 8 describes the bpp configuration mode values referenced in Table 7. In Table 8, assume
that for each configuration mode number, the features of all lower numbers are also supported.
For example, if the supported configuration mode is 4, then modes 1 through 3 are also supported.
DVD consists of both the overlay engine as well as the MPEG decoding; both are necessary for
DVD playback.
Table 8.

Details of bpp Configuration Modes

Configuration Mode Number
6
5
4
3
2
1
For information about
Obtaining graphics software and utilities
1.7.1.1 Dynamic Video Memory Technology (DVMT)
DVMT enables enhanced graphics and memory performance through Direct AGP, and highly
efficient memory utilization. DVMT ensures the most efficient use of available system memory
(up to 64 MB) for maximum 2-D/3-D graphics performance.
DVMT uses a portion of system physical memory (as set in the BIOS Setup program) for
compatibility with legacy applications. An example of this would be when using VGA graphics
under DOS. Once loaded, the operating system and graphics drivers allocate the buffers needed
for performing graphics functions.
✏
NOTE
The use of DVMT requires operating system driver support.
For information about
Obtaining the DVMT white paper
1.7.1.2 Zone Rendering Technology (ZRT)
The Intel Extreme Graphics Controller supports Zone Rendering Technology (ZRT). ZRT is a
process by which the screen is divided into several zones. Each zone is completely cached and
rendered on chip before being written to the frame buffer. The benefits of ZRT include the
following:
•
Increased memory efficiency via better localization of data
•
Increased on-chip processing speed due to decreased wait time for data
24
Description
32 bpp (16 M colors) with DVD (Overlay + MPEG decode) On
16 bpp (64 K colors) with DVD On
32 bpp (16 M colors) with DVD Off
16 bpp (64 K colors) with DVD Off
8 bpp (256 colors) with DVD On
8 bpp (256 colors) with DVD off
Refer to
http://developer.intel.com/design/chipsets/845gl/
Refer to
Section 1.2, page 12