Answers Database

SDT2XNF 'error 033, no standard libraries used'


Record #281

Product Family:  Software

Product Line:  OrCad

Problem Title:
SDT2XNF 'error 033, no standard libraries used'


Problem Description:
While running sdt2nxf 5.x on an OrCad design, the following
error can occur:

DS35-SDT-ERROR-033:
No standard Xilinx XC2000/XC3000/XC4000 SDT libraries were used in the
INF file 'temp3k.inf'.


Solution 1:

This error indicates that no standard Xilinx libraries are used in
the design.  Libraries which qualify as a standard library include:

		pre-XACT5	XACT5
	2k:	x2k.lib		xc2000.lib
	3k:	x3k.lib		xc3000.lib
	4k:	x4k.lib		xc4000.lib
	7k:	xepld.lib	xc7000.lib

On some designs, the customer will not use any of the above libraries.
The most common occurence is a user processing an old design from archive
which use the CVT libraries (x2-cvt.lib or x3-cvt.lib).

The workaround is to configure an appropriate library from the standard
libraries ("appropriate" means that the chosen standard library is from
the same family and release as the libraries which are used in the design).
Be sure that when the standard library is configured that it appears as the
last library.  By doing this, the library will be recognized, but no
components will be pulled from it.  This satifies the SDT2XNF requirement
of including a standard library, while not modifying the output.
For example:

	current_configuration	workaround_configuration
		x3k.lib		 	x3-cvt.lib
		xttl.lib		 xttl.lib
		xpal.lib	       	 xpal.lib
					x3k.lib



Solution 2:

Another cause of this error is when using OrCAD Capture.  If the top-
level schematic does not contain any Xilinx library parts (user-created
macros or xblox components only), then Capture will not write a Xilinx
library reference into the top-level INF file.

Put an unconnected "dummy" component, such as a BUF, onto the top-
level schematic.  This will cause Capture to write a Xilinx library
reference into the INF file.  The unconnected gate will be removed by
SDT2XNF.



End of Record #281