Article ID: 000074916 Content Type: Troubleshooting Last Reviewed: 10/21/2011

The Quartus II software Chip Planner displays an error message if you attempt to create an atom by right-clicking a COMB node of an ALM

Environment

    Quartus® II Subscription Edition
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Critical Issue

Description

In the Chip Planner, if you attempt to create an atom in a design that targets an Arria GX, Arria II GX, Arria II GZ, Stratix II, Stratix II GX, Stratix III, or Stratix IV device by right-clicking a COMB node of an ALM and selecting Create Atom, the Chip Planner displays

Can’t create node. Click the System tab on the Messages window for details. However, the Messages window does not contain any details.

Resolution

To create an atom for a COMB node of an ALM:

  1. Select and right-click an empty FF of an ALM and then click Create Atom.
  2. In the Create Atom dialog box, name the atom you created in step 1.
  3. Select and right-click an empty COMB node of the same ALM and then click Create Atom.
  4. In the Create Atom dialog box, name and specify the type of atom you created in step 3.
  5. In the Change Manager window of the Chip Planner, select and right-click the atom you created in step 1, and then click Restore Selected Change.

You can proceed to run Check and Save all Netlist Changes to verify these engineering changes.

Related Products

This article applies to 8 products

Arria® GX FPGA
Stratix® II GX FPGA
Stratix® II FPGAs
Arria® II FPGAs
Stratix® III FPGAs
Arria® II GZ FPGA
Arria® II GX FPGA
Stratix® IV FPGAs

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