Shared variable not a protected type


What does the following warning mean and how I can fix it?

# Warning: COMP96_0564: test_interface.vhd : (87, 8): Shared variable is not of a protected type. (IEEE Std 1076-2002,


VHDL 2002 standard uses protected types by default. VHDL code conforms to older standards with simple shared variable will lead to above warning. You can try any of the following:

  1. Use -93 compiler settings for GUI Tools | Preferences | Compilation | VHDL compiler and change the Standard version to 1076-1993 and for script use acom -93.

  2. Change the variables to protected type.

  3. Or you can just ignore the warnings, it means your code is not 2002 compatible.

If you want to read more on Shared variables, go to Active-HDL Help | Product Help | Contents | References | VHDL language reference guide | VHDL 2002 and click Shared variables.

Ask Us a Question
Ask Us a Question
Captcha ImageReload Captcha
Incorrect data entered.
Thank you! Your question has been submitted. Please allow 1-3 business days for someone to respond to your question.
Internal error occurred. Your question was not submitted. Please contact us using Feedback form.
We use cookies to ensure we give you the best user experience and to provide you with content we believe will be of relevance to you. If you continue to use our site, you consent to our use of cookies. A detailed overview on the use of cookies and other website information is located in our Privacy Policy.