Assigning Pin Numbers in Block Diagram Editor

Description

How do I assign device specific pin numbers to the I/O ports using the block diagram editor? I want the pin numbers to show-up on my schematics.

Solution

In order for it to work, you need to add attribute declarations (in addition to attribute specification) to the block diagram.

Please follow these steps:

  1. Select Diagram | VHDL | Declaration for an Entity from the main menu (there is a button on the toolbar as well). Place the Entity Declaration anywhere on the diagram.

  2. Inside the Entity Declaration type: attribute LOC: string;

  3. Save the file and compile it. The errors should disappear.

NOTES: This solution is supported by the Xilinx and Lattice vendors.

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