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Appendix F ATI RAGE PRO AGP Graphics Cards
Compaq Personal Computers
Original - April 1998
F-2
64-Bit Graphics
Memory Bus
RGB Data,
Hsync, Vsync
Monitor
Multimedia
Data
F.2 FUNCTIONAL DESCRIPTION
The ATI RAGE PRO AGP Graphics Cards are based on the ATI RAGE PRO controller. The
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 the on-board SGRAM
stores the main display image. Both cards implement side band addressing for high 3D
performance. The AGP 1X card, providing a peak bandwidth of 133 MB/s, comes standard with
four megabytes of 100-MHz SGRAM installed. The AGP 2X card, providing a peak bandwidth
of 500 MB/s, includes four megabytes of 100-MHz SGRAM on the board and an optional 4-MB
SGRAM module may be added to expand the frame buffer memory to eight megabytes.
NOTES:
[1] 2 megabytes on AGP 1X card, 4 megabytes on AGP 2x card.
2-MB module installed as standard on AGP 1X card. 4-MB module optional on AGP 2X card.
Figure F–2.
ATI RAGE PRO AGP Graphics Card Block diagram
The ATI RAGE PRO AGP Graphics Card includes the following software support:
♦
Accelerated drive support for Windows 3.x, Win95, and WinNT
♦
MS DirectDraw support for Win95
♦
MS ActiveMovie support for Win95
♦
MPEG-1 software playback for DOS, Windows 3.x, and Win95
♦
MPEG-2 software playback Win95
♦
MS Direct3D support for Win95
♦
QuickDraw 3D RAVE support for Win95 and WinNT
♦
OpenGL support for Win95 and WinNT
♦
Heidi support for WinNT
♦
ATI 3D CIF support for Win95
ATI
RAGE PRO Turbo
AGP Graphics
Controller
32-Bit AGP Bus
AGP
Connector
AMC
Connector
On-Board
SGRAM [1]
BIOS
ROM
SGRAM
Module