我用MegaCore生成了一个NCO的IP Core，按照说明将下面两个文件加入到Quartus中：nco.v, nco_st.v（注：生成的IP名字取为nco.v）。
但是在quartus中运行的时候会出现下面的错误。
Error: Node instance "ux000" instantiates undefined entity "asj_altqmcpipe"

Error: Quartus II Analysis & Synthesis was unsuccessful. 1 error, 2 warnings
Info: Allocated 134 megabytes of memory during processing
Error: Processing ended: Sun Jan 11 19:42:59 2009
Error: Elapsed time: 00:00:01

请问大家有遇到过这种问题吗，Thanx，^_^。