使用vhdl语言在altera公司的up3板上产生vga信号，里面有详细的解析和说明，是一个很好的教程。和上一个文件razzle差不多，但是产生的效果不一样。-use of the VHDL language ALTERA company's board up3 have vga signal containing a detailed analysis and explanation is a good guide. And on a razzle almost document, but the effects are not the same.