Compaq Deskpro EP 6233 - Figure F-3. Ati 3 Dr Age Prog; F.2.1 Ati Rage Pro Turbo Agp Graphics Controller

Technical Reference Guide
Compaq Personal Computers
Original - March 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 controller provides most of the functionality of the
integrated graphics subsystem and contains the features listed below:
♦
128-level command FIFO 24-bit 200-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
Figure F-3 shows the basic architecture of the ATI 3D RAGE PRO controller, which is
compatible with software written for VGA, EGA, and CGA modes. Drivers are supplied for
control of graphics (GUI) accelerator engines used in extended VGA modes. The 3D RAGE
PRO includes multimedia support such as video overlay and DAC mode switching as well as
VESA standard feature connector (VSFC) baseline support. The 3D RAGE PRO accelerates
video playback by providing format conversion, interpolated x and y zooming, and color-space
conversion for the video display area (window).
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
AD31..0
AGP Bus
VD7..0
VSync
Memory
Video
Processor