Xilinx Answer #2621 : Foundation State Editor: E:#002 Syntax error near "<="

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

Record #2621
Product Family: Software

Product Line: Aldec

Product Part: Foundation State Editor

Product Version: 1.3

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

Problem Description:
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 - Last Modified: 10/01/97 09:42

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