Answers Database
ngdbuild : basnu:93, unexpanded logical block.
Record #4517
Product Family: Software
Product Line: FPGA Implementation
Product Part: ngdbuild
Problem Title:
ngdbuild : basnu:93, unexpanded logical block.
Problem Description:
urgency: standard
General Description: ngdbuild or map may run into the basnu: 93 unexpanded logical block error
when compiling the xnf file exported from foundation express.
Also may occur when implementing a project that was copied by
Foundation Project Manager.
Solution 1:
In a schematic based design it is possible for xnf files generated in the project directory
to interfere with some macros causing this unexpanded logical block problem. A possible
solution is to back up the xnf files into another temp directory then delete these xnf files
from the project directory. lastly, rerun the implementation.
Solution 2:
Similar to resolution #2, delete the existing netlist(s) for the component/symbols that
are stated in the error message and regenerate the netlists.
Solution 3:
one possible cause is the HDL code in foundation express instantiates some non-primitive macro.
copy the macro_name.xnf from the fndtn/synth/xilinx/macro to the project directory.
Solution 4:
If using Foundation schematic based project, in Project Manager,
in the right-side flow window, click on the Synthesis tab and select
the option to Update All Macros.
Solution 5:
Use the "Macro Search Path" text box under the "Translate" tab
within the Implementation Options. Specify the location of the lower-
level module netlists in this text box.
Note: You may not be able to find this option as it varies by device family
and software version. Look through the particular documentation to find this.
End of Record #4517 - Last Modified: 09/30/99 21:38 |
