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I have had this before - it will be listed as illegal because it is an unsupported legacy device but should still compile. But the problem with Quartus 2 is it forbids some things that Max Plus 2 let you get away with (and I guess these "illegal" things were essential in an old design I worked with).
You may have to install max plus 2 and fight your way through that software.
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Unfortunately, I can't get the Max Plus II software installer to start on my computer. Hopefully, I can find an older version of Quartus that can do what I need
Honored Contributor
