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Technical Reference Guide
Compaq Personal Computers
Original - April 1998
F-3
VESA
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HSync
Graphics
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F.2.1 ATI RAGE PRO TURBO AGP GRAPHICS CONTROLLER
The ATI RAGE PRO Turbo AGP graphics controller 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/accelerator 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 Energy Star compliance
♦
Supports DDC2B+ PnP monitors
Figure F-3 shows the basic architecture 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 supports AGP 2X operation. The VGA core of the
controller is compatible with VGA, EGA, and CGA software. Extended graphics 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