Answers Database

Foundation Schematic: Adding Attributes - LOC, X, etc.


Record #1938

Product Family:  Software

Product Line:  Aldec

Problem Title:
Foundation Schematic: Adding Attributes - LOC, X, etc.


Problem Description:
Keywords: foundation schematic attribute loc nodelay fast tnm
Urgency:  Standard

General Description:
How do I add attributes using the Foundation Schematic
Editor?


Solution 1:

Some attributes require both a name and a value to be
entered.  These include LOC and TNM.  For a complete list of
Xilinx attributes, refer to Chapter 4 of the XACT Libraries
Guide.

Follow these steps to add an attribute with a value:

1. Double-click on the net or symbol you wish to place the
   attribute on.  If it is a net, click on the Attributes
   button.

2. In the "Parameter Name" or Parameters -> Name field, enter
   the name of the attribute (e.g. LOC).

3. In the "Parameter Description" or Parameters ->
   Description field, enter the value of the attribute
   (e.g. P12).

4. Click the Add button.  The attribute will appear in the
   list box.

The number of dots next to the attribute in the list box
determines what part of the attribute is displayed on the
schematic.  Double-clicking on the parameter in the list
box will change the number of dots:

0 dots:  Neither the Name nor Description will be displayed.
1 dot :  The Description only will be displayed.
2 dots:  Both the Name and Description will be displayed.






Solution 2:

Some attributes only require a name (no value is needed).
These include FAST, NODELAY, and X.  For a complete list of
Xilinx attributes, refer to Chapter 4 of the XACT Libraries
Guide.

Follow these steps to add an attribute with no value:

1. Double-click on the net or symbol you wish to place an
   attribute on.  If it is a net, click on the Attributes
   button.

2. In the "Parameter Name" or Parameters -> Name field, enter
   the name of the attribute (e.g. FAST).  Leave the
   Description blank.

3. Click the add button.  The attribute will now appear in
   the list box without a value (e.g. "FAST=").

The number of dots next to the attribute in the list box
determines what part of the attribute is displayed on the
schematic.  Double-clicking on the parameter in the list
box will change the number of dots:

0 dots:  Neither the Name nor Description will be displayed.
1 dot :  Only the Description will be displayed (*).
2 dots:  Both the Name and Description will be displayed.

(*) In this case there is no Description, so nothing will be
displayed.



End of Record #1938