Answers Database

Foundation State Editor: E:#002 Syntax error near "<="


Record #2621

Product Family:  Software

Product Line:  Aldec

Problem Title:
Foundation State Editor: E:#002 Syntax error near "<="


Problem Description:
Keywords: vhdl fsm case diagram action
Urgency:  Standard

General Description:
When synthesizing a finite state machine (FSM) using the
Foundation State Editor, the following error occurs:

E:#002 Syntax error near "<=".


Solution 1:

This will happen if you have a Diagram Action in your FSM
that contains a CASE statement, or any statement that uses
the => operator.

The State Editor changes the statement from:

case (inputs) is
   when "000" => outputs <= "101";
   ...	      ^^

to an incorrect syntax:

case (inputs) is
   when "000" <= > outputs <= "101";
   ...	      ^^^^

The workaround is:

1. In the State Editor, select Synthesis->HDL Code
   Generation.	Click Yes to view the HDL code.

2. In the HDL Editor, select Edit->Read Only to turn off
   the read-only mode.

3. Correct the CASE statement syntax.

4. In the HDL Editor, select Synthesis->Synthesize.  When
   synthesis is complete, exit the HDL Editor.

If your FSM is your top-level design, skip step 5.

5. In the State Editor, select Project->Create Macro or
   Project->Update Macro to create or update the library
   symbol.



End of Record #2621