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AR# 11825

4.1i Virtex MAP - "ERROR:MapLib:317..." is reported when the "INIT=S" attribute is used with the FDRSE flip-flop


Keywords: FDRSE, FDSRE, FDCPE, FDPCE, INIT, attribute, MAP, ERROR:MapLib:317

Urgency: Standard

General Description:
When I use the "INIT=S" attribute with the FDRSE flip-flop in a design that targets a Virtex device, MAP fails with the following error:

ERROR:MapLib:317 - Flop FDRSE symbol "u1" (output signal=N_output) has INITSTATE=1 and CLR dominates PRE. Virtex does not support this flop. To convert the flop into a FDPCE where PRE dominates CLR, set the environment variable XIL_MAP_FDCPE_I1_TO_FDPCE_I1.

(This message is misleading, as setting the variable actually converts the FDRSE to an FDSRE.)


The message text will be corrected in the first major software release following 4.2i.
AR# 11825
Date Created 06/21/2001
Last Updated 08/20/2003
Status Archive
Type General Article