用quartus 11.0，找不到FLEX 10K系列，百度无果，最后用谷歌在altera论坛上找到了答案：

FLEX device at Quartus 11 web edition

--------------------------------------------------------------------------------

Hi all,

I downloaded and installed quatrus 11.0 web edition. I need to use Flex 10K device but it doesn't exist there. How can I import it? When should I download it?

Thanks ahead
Alex

Re: FLEX device at Quartus 11 web edition

--------------------------------------------------------------------------------

Quartus V9.0 has been the last version to support Flex10k, see Quartus release notes

没办法，把11.0卸载了装回了9.0.
原文链接：http://www.alteraforum.com/forum/showthread.php?t=29618