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AR# 24131

8.2i MAP - "FATAL_ERROR:MapHelpers:mhcv2devpkg.c:51:1.18 - rcToSite() called for a non-logic category site type RAMB16."

Description

Keyword: partitions, block RAM, LOC 

 

When using the DCC (Design Closure Cockpit) flow, and a partition is created from a module and a LOC constraint is put on a RAMB16, MAP errors out with the following message: 

 

"FATAL_ERROR:MapHelpers:mhcv2devpkg.c:51:1.18 - rcToSite() called for a non-logic 

category site type RAMB16. Process will terminate. To resolve this error, 

please consult the Answers Database and other online resources at 

http://support.xilinx.com. If you need further assistance, please open a 

Webcase by clicking on the "WebCase" link at http://support.xilinx.com"

Solution

This problem will be fixed in ISE version 9.1i, currently scheduled for January, 2007. 

 

Meanwhile, you can work around this issue by creating an AREA_GROUP range for the module that includes only the required site for the BRAM, for example: 

 

INST "MODULE" AREA_GROUP = "RAM_GRP"; 

AREA_GROUP "RAM_GRP" RANGE = "RAMB16_X0Y11:RAMB16_X0Y11"; 

 

NOTE: The key to this work around is that the BRAM is constrained without actually applying a constraint to the BRAM itself. If more than one BRAM exists in the module, a larger range would need to be specified.

AR# 24131
Date Created 09/04/2007
Last Updated 05/20/2014
Status Archive
Type General Article