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Can you post the code? Without that there is little we can say
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Firstly, thank u for replying my problem
I added my file as attachment.You can look in the attachments.
In the altera_code.PNG ; msg_id_count is variable and integer signal. I can use variable because ı want to do generic and like shift register.
Actually, I dont understand why did the error occur in the 15.1 versiyon.
I find my problem's solution in the altera site, you can look in the altera_problems_solution.jpg.
my versiyon is updater than 13.1 altera versiyon, but THE ERROR occur when I was doing SYNTHESIS.
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