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Altera_Forum
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14 years ago

Undefined behavior in my key detection

I am designing a shift key detector.I wrote a test bench. The test showed that my implementation was incorrect. See attachment for the screenshot of ModelSim simulation. Beside the undefined...
Altera_Forum's avatar
Altera_Forum
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14 years ago

Hi Tricky, Thank you for your input! It was very helpful to get moving.

My revised code is in attachment. Thanks

I gave default values to left and right pressed.

But where do I place next_state <= current_state;

Is this what you mean by assigning a value to next_state?

Right now I left it in the second process, which is WRONG from what I understand.

Thanks!