W9970CF

W9970CF Video Graphics Controller FEATURES u Integrated Video Graphics Controller 64-bit graphics engine Integrated video accelerator On-chip 24-bit true color RAMDAC with up to 135 MHz pixel clock rate On-chip clock synthesizers generating up to 135 MHz VCLK and 80 MHz MCLK u Graphics Engine 64-bit graphics acceleration 8/16/24 bit-per-pixel true color acceleration Deep command queue to improve GE performance Bit block transfer between system memory and display memory ú HostBLT ú Pattern BLT ú Color/font expanding BLT ú Transparent BLT ú Color/font expansion ú Rectangle fill ú 256 three-operand (source, pattern and destination) ROPs Bresenham line drawing Short stroke vector drawing Rectangle and line clipping 64 × 64 × 2 or 32 × 32 × 2 hardware cursor u Video Acceleration Video (YUV) and graphics (RGB) shared frame buffer architecture Two-dimensional bilinear interpolation scaling with 1-pixel resolution from 1× to 8× On-chip standard CCIR 601 YUV to RGB color space conversion Cropping window and filtering supports Hardware support for Microsoft DirectDraw feature set ú Double buffering and page flipping to prevent from tearing in image ú Transparent BitBLTs of sprites for game acceleration ú Color keying, chroma keying and window keying to overlay video and graphics streams ú On-the-fly blending of video and graphics streams Supports 2× scaling to allow 320×200 game image to be displayed at 640 × 480 full-screen resolution High-qual...