Mailbox

SystemVerilog
,
2

The code that you provided works with Questasim 10.1 and later, so you should check your error message and code to make sure that they are related.

Some suggestions are:

  1. Don’t use program blocks. There are several threads on the Verification Academy which discuss the origin of them and why they shouldn’t be used.
  2. Your mailbox should be typed to prevent any inadvertent misuse of the mailbox by placing an object of an unexpected type into it causing problems.
  3. UVM has these TLM capabilities built into the methodology. Is there a reason you aren’t using UVM?