文件名称:
vga显示卡控制器开源项目 vhdl源代码
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文件大小: 661kb
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上传时间: 2010-11-09
详细说明： http://opencores.org/project,vga_lcd Description The OpenCores VGA/LCD Controller core is a WISHBONE revB.3 compliant embedded VGA core capable of driving CRT and LCD displays. It supports user programmable resolutions and video timings, which are limited only by the available WISHBONE bandwidth. Making it compatible with almost all available LCD and CRT displays The core supports a number of color modes, including 32bpp, 24bpp, 16bpp, 8bpp gray-scale, and 8bpp-pseudo color. The video memory is located outside the primary cor e, thus providing the most flexible memory solution. It can be located on-chip or off-chip, shared with the system’s main memory (VGA on demand) or be dedicated to the VGA system. The color lookup table is, as of core version 2.0, incorporated into the color-processor block. Pixel data is fetched automatically via the Wishbone revB.3 Master interface, making this an ideal “program-and-forget” video solution. More demanding video applications like streaming video or video games can benefit from the video-bank-switching function, which reduces flicker and cluttered images by automatically switching between video-memory pages and/or color lookup tables on each vertical retrace. The core can interrupt the host on each horizontal and/or vertical synchronization pulse. The horizontal, vertical and composite synchronization polarization levels, as well as the blanking polarization level are user programmable. ...展开收缩
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