Quartus

List of states in WHEN clause of state machine Case Statement cannot be enclosed in parentheses

CAUSE: In a WHEN clause in a Case Statement for a state machine in a Text Design File (.tdf), you used parentheses around a list of states. You cannot use parentheses around a list of states—you must use parentheses only to delimit groups, and a list of states is not a group.
ACTION: Remove the parentheses from the WHEN clause.

See also:

Designing State Machines

- PLDWorld -

 
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