Answers Database


2.1i Virtex Map - Pack of two RAMs into one slice fails with incorrect message.


Record #7638

Product Family: Software

Product Line: FPGA Implementation

Product Part: map

Product Version: 2.1i

Problem Title:

2.1i Virtex Map - Pack of two RAMs into one slice fails with incorrect message.


Problem Description:
Urgency: Standard

General Description:
Error message incorrectly indicates that the address nets are not the same for two RAM symbols constrained to the same slice.

ERROR:xvkpu - Unable to obey design constraints (MACRONAME = H1/hset, RLOC =
    R5C0.S0) which require the combination of the following symbols into a single

    slice:
      RAM symbol "H1/$I711" (Output Signal = &__A__12)
      RAM symbol "H1/$I712" (Output Signal = &__A__11)
    The address signals must match exactly when using both F and G in RAM mode.



Solution 1:

This problem is fixed in the latest 2.1i Service Pack available at:
http://support.xilinx.com/support/techsup/sw_updates/




End of Record #7638 - Last Modified: 10/18/99 10:28

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