Honored ContributorFor some reason my projects stop compiling when the Analysis and Synthesis reach Elaborating Higher level entity. Even projects that had compiled perfectly in the past have failed to compile now because of this problem.
My professor and myself are stumped as to the cause of my dilema. if anyone can shed some light on this mystery I would appreciate any help.
Honored ContributorHi there,
any message during compilation that pinpoints to some option being set or a failure detected?Honored ContributorUnfortunatly there is not, and there is only one indication that there is a problem at the Synthesis and Analysis level.
When it begins to compile it only compiles for 2 seconds on the Synthesis and Analysis Level. The overall timer continues but the timer next to the % complete is stuck at 2 seconds.Honored ContributorDid you try to delete the database and compile the project again? I had some cases with a database in a strange state that caused Quartus to freeze. Just delete the whole db folder in the project.
Honored ContributorI have just tried your suggestion of deleting the database but there is still no change. Thank you for your idea though.
Honored ContributorA possible explanation is an effectively non-synthesizable construct that doesn't immidiately reveal as such for Quartus. Testing the design with a simulator is one option, incrementally disabling parts of the design to narrow down the problem another one.
P.S.: Of course, there may be a Quartus bug, too.Honored Contributorare you trying to create a large ram? if it doesnt fit the quartus coding template for a ram it will try to build it out of registers and can take a looong time to compile it.
Honored ContributorThanks for your input guys but I'm starting to think that FvM's idea of a Quartus bug might be right. I've taken all of the suggestions thus far and considered them but the bug idea makes the most sense at this point.
Any suggestions on how I might fix it if it is a bug?Honored Contributorreport it to altera via mysupport.
Are you sure its not the ram template problem? can you post any code?Honored Contributorhave you also tried a different version of quartus? (newest is 11.1)
Honored ContributorSince the program is on the school's computer its at quartus 11.0. As for the code I've tried compileing a simple adder but it still will not compile and has the same problems with the other programs.
module adder(a,b,cin,s,cout); parameter N = 8; input [N-1:0] a, b; input cin; output [N-1:0] s; output cout; assign {cout,s} = a + b + cin; endmodule
