Error (10500): VHDL syntax error at hdb3.vhd(75) near text "else"; expecting "end", or "(", or an identifier ("else" is a reserved keyword), or a sequential statement,
Error (10500): VHDL syntax error at hdb3.vhd(156) near text "="; expecting "(", or "'", or "."
Info: Found 0 design units, including 0 entities, in source file C:/Documents and Settings/Dell/桌面/hdb3.vhd
Error: Quartus II Analysis & Synthesis was unsuccessful. 2 errors, 0 warnings
Error: Processing ended: Sat Apr 12 13:37:52 2008
Error: Elapsed time: 00:00:01 我帮楼主编译了一下，楼主的语法有错误，就是if和end if没有配对。 | 
