Appendix G Diamond Fire AGP Graphics Card
Compaq Personal Computers
Original - April 1998
G-2
128-Bit Graphics
Memory Bus
RGB Data
Monitor
VD7..0
G.2 FUNCTIONAL DESCRIPTION
The Diamond Fire AGP Graphics Card is based on the NVIDIA RIVA 128 graphics controller.
The AGP design provides an economical approach to 3D processing by off-loading 3D effects
such as texturing, z-buffering and alpha blending while the on-board SGRAM stores the main
display image. This card includes four megabytes of 100-MHz SGRAM memory. The graphics
BIOS code is contained on-board in flash ROM and is easily upgradeable.
Figure G–2.
Diamond Fire AGP Graphics Card Block diagram
The Diamond Fire 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
nVIDIA
RIVA 128
Graphics
Controller
32-Bit AGP Bus
North
Bridge
VSFC
Connector
4-MB
On-Board
SGRAM
BIOS
ROM
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