Technical Reference Guide
Compaq Personal Computers
Original - April 1998
F-3
VESA
Connector
HSync
Graphics
Data
Display
Monitor
Red
Green
Blue
F.2.1 ATI RAGE PRO TURBO AGP GRAPHICS CONTROLLER
The ATI RAGE PRO Turbo AGP graphics controll er provides most of the functionality of the
integrated graphics subsystem and contains the features listed below:
230-MHz DAC
2D accelerator with:
Hardware BitBLT, line draw, polygon fill, h/w cursor
MS DirectDraw support (double buffering, virtual sprites, transparent BitBLT
8-/16-/24-/32-bpp acceleration
24-bpp true color w/1 MB memory
3D accelerator with:
Integrated 4-KB texture cache for improved large triangle performance
3D primitive support for points, lines, triangle, lists, strips, and quadrilaterals
Full screen/window double buffering
Hidden surface removal with 16-bit Z-buffering
Single pass bi- and tri-linear filtering support
Full Direct3D texture lighting support
Dithering support in 16-bpp for near-24-bpp quality in less memory
VESA DDC1 and DDC2B support
Video processor/accelerat or supporting the following formats:
YCrCb 4:2:2
RGB 5-5-5
RGB 5-6-5
Cirrus AcciPak 91m)
Power management for full VESA DPMS and EPA En ergy Star compliance
Supports DDC2B+ PnP monitors
Figure F-3 shows the basic architectur e of the ATI 3D RAGE PRO controller. Both the AGP and
AGP 2X cards feature the RAGE PRO Turbo controller, with the AGP 2X card using an
enhanced version of the controller that support s AGP 2X operation. The VGA core of the
controller is compatible with VGA, EGA, and CGA software. Extended gr aphics modes are
supported through video BIOS in flash ROM, which can be easily updated if necessary.
Figure F–3. ATI 3DRage Pro Graphics Controller Internal Architecture
3D RAGE PRO
Host
Bus
I/F
Drawing
Coprocessor
VGA
Controller
RAM
DAC
CRT
Controller
Memory
I/F
AGP Bus
AGP
Connector
VD7..0
VSync
Memory
Video
Processor