Functional Description; F.2 Functional Description - Compaq W4000 Technical Reference Manual

Appendix H Compaq/Matrox Millennium G450 AGP Graphics Card
F.2

FUNCTIONAL DESCRIPTION

The Matrox Millennium G450-SD Graphics Card provides high performance 2D and 3D display
imaging. The card's AGP design provides an economical approach to 3D processing by off-
loading 3D effects such as texturing, z-buffering and alpha blending to the system memory while
16 or 32 megabytes of on-board SDRAM stores the main display image.
AGP
Bus
Card
AGP 4X
Edge
Connector
BIOS
ROM
Figure F-2. Matrox Millennium G450 Graphics Card Block diagram
The Matrox Millennium G450 Graphics Card includes the following features:
♦ 64-MB SDRAM frame buffer using 128-bit 166-MHz access
♦ AGP 4X transfers with sideband addressing
♦ 2D drawing engine with:
• 128-bit BitBLTs, rectangle/polygon fills, line draws
• Hardware cursor
• 8-/16-/32-bpp mode acceleration
♦ Dual-head features:
• Two analog monitor (RGB) ports
•
DVD max mode
• DualHead zoom mode
• DualHead clone mode
• DualHead TV output mode
♦ 3D accelerator with:
• Hardware transform and lighting
• Anistropic filtering
• Specular lighting diffuse, flat and Gouraud shading
• 16-/24-bit Z-buffering
♦ 360-MHz primary RAMDAC, 200-MHz secondary RAMDAC
♦ VESA compliancy:
• Dual DDC2B monitor support
• VIP 2.0 interface
• DPMS, EPA Energy Star, and ACPI-compliant power management
F-2 Compaq Personal Computers
MGA Graphics Controller
Video
Scalar
I/F
3D Array
2D/VGA
Engine
Engine
Original - November 2000
128-bit
166-MHz
Data Bus
Memory
I/F
RGB
350-MHz
RAMDAC
H/VSync
CRT
H/VSync
Controller
RGB
200-MHz
RAMDAC
16 / 32 MB
SDRAM
Frame Buffer
Analog
Monitor
Connector 1
Analog
Monitor
Connector 2