Quartus

State must be used in expression that describes state machine


CAUSE: In a Text Design File (.tdf), you used a state in a Case Statement, Truth Table Statement, or If Then Statement that describes something other than a state machine. You must use states only in expressions that specify transitions in state machines.
ACTION: Remove the state from the expression, or change the expression so that it specifies transitions in a state machine.

See also:

Designing State Machines
Implementing Conditional Logic

- PLDWorld -

 

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