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JQ2's avatar
JQ2
Icon for New Contributor rankNew Contributor
5 years ago
Solved

Error 16045: Instance "auto_fab_0|alt_sld_fab_0" instantiated undefined entity

When I was trying to compile the project with Quartus Prime Pro 20.2, I encountered the following issue during the synthesize stage. This issue appeared suddenly, the same design compiled successfull...
  • JQ2's avatar
    JQ2
    5 years ago

    We found the issue. The issue is caused by the update of Digital Guardian software tool on our Linux server. The new version of the tool somehow blocks certain functionality of Quartus, so certain IP files cannot be retrieved. Reverting to a previous version of the Digital Guardian solved the problem.

    Thank you all for the help.

    Regards, JQ

sstrell's avatar
sstrell
Icon for Super Contributor rankSuper Contributor
5 years ago

Did you try enabling Signal Tap or some other debugging tool? That entity gets instantiated when you use a debugging tool (sld = system level debug) that uses JTAG access for its use. Perhaps you accidentally enabled a tool and didn't configure it. Check the project settings to make sure Signal Tap is disabled.

It looks like you're using the golden hardware reference design (from Rocketboards, so you could also just download a clean copy of the design and recompile it from scratch.