Chapter 6 Graphics Subsystem
Compaq iPAQ Series of Desktop Personal Computers
Second Edition - February 2001
6-2
6.2 FUNCTIONAL
DESCRIPTION
The Intel 810E and 815E chipsets integrate the graphics controller into their GMCH component
(Figure 6-1). The graphics controller includes 2D and 3D accelerator engines working with a
deeply pipelined pre-processor. The controller supports perspective-correct texture mapping,
bilinear and anisotropic Mip-mapping, Alpha blending, Gouraud shading, and fogging.
Figure 6-1.
Graphics Subsystem, Block diagram
The graphics controller uses a portion of system memory for instructions, textures, and frame
(display) buffering. Using a process called Dynamic Video Memory Technology (DVMT), the
controller dynamically allocates display and texture memory amounts according to the needs of the
application. Pentium III-based systems also include four megabytes of Display Cache that can be
used for Z-buffering.
82810E or 82815 GMCH
Monitor
3D/2D
Graphics
Controller
SDRAM
Controller
FSB
I/F
Hub
Link
Described in Chapter 3
Described in Chapter 4
4 MB
Display Cache [1]
RGB
AGP Bus
[1] Standard on all Pentium III-based systems.
Optional for Celeron-based iPAQ 2.0 systems.
Summary of Contents for iPAQ 1.0
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