Compaq 850 manual Ramdac, MB Sdram

Appendix H Compaq/Matrox Millennium G450 AGP Graphics Card

H.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 32 megabytes of on-board SDRAM stores the main display image.

Card

Edge

Connector

AGP Bus

AGP 4X

I/F

MGA Graphics Controller

Video

Scalar

2D/VGA 3D Array

Memory

I/F

350-MHz

RAMDAC

128-bit

166-MHz Data Bus

RGB

H/VSync

32MB SDRAM

Frame Buffer

Analog

Monitor

BIOS

ROM

Engine Engine

CRT

Controller

200-MHz

RAMDAC

H/VSync

RGB

Connector 1

Analog

Monitor

Connector 2

Figure H-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

H-2Compaq Personal Computers

Original - November 2000