用modelsim-altera版在时序仿真时,在工程中加入了仿真元件库、网表文件。延时文件、测试文件。. R1 W- g2 N. E |$ L7 H7 |) v$ s 但是执行仿真后,出现这样的错误, K0 N7 g% I3 `" K Failed to access library 'C:/altera/quartus60/eda/sim_lib' at "C:/altera/quartus60/eda/sim_lib".www.fpga-design.net M' }4 x* a5 } 以及 F:/modelsim/counter/counter.vo(408): Instantiation of 'cycloneii_io' failed. The design unit was not found. 请求大家的帮助8 N' L8 M* y: _; }4 t' g