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Altera_Forum's avatar
Altera_Forum
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10 years ago

How to initialize a signal without any loops

Hi, I'm very new at learning VHDL and have some trouble dealing with unwanted results of the project I've been working on. I'm designing a state machine for my school project. What I want to ma...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
10 years ago

The reason you're getting Z output is that you have the en2 almost always 0, giving mypoint_add 'Z'. I see uyou are also trying to drive 000 to it? why are you using tri-states at all? are you trying to connect to some off chip devices?

I also noticed there are signals missing from the process sensitivity list, this may affect the simulation behaviour.

There is no way you can initialise mypoint_add because it is just a wire.