Answers Database

Foundation 1.4, MAP: ERROR:basnu:93 - logical block <instance number> oftype "OBUF" is unexpanded... when OMUX2 is used in XNF netlist


Record #3706

Product Family:  Software

Product Line:  FPGA Implementation

Problem Title:
Foundation 1.4, MAP: ERROR:basnu:93 - logical block <instance number>
oftype "OBUF" is unexpanded... when OMUX2 is used in XNF netlist



Problem Description:
Keywords:  basnu:93, OMUX2, xnf, OBUF

Urgency: Standard

General Description:

In F1.4 if user uses an OMUX2 in an XC4000EX or XC4000XL schematic and exports t
he design to an XNF netlist, the following error will appear in the MAP stage of
 the
implementation:

ERROR:basnu:93 - logical block <instance> of type "OBUF" is unexpanded.
Errors detected in general drc.




Solution 1:

Exporting the design to XNF file format is not supported for
XC4000XL and XC4000EX devices.	Instead, use the default EDIF
(.EDN) flow.



End of Record #3706