ip core implementation on fpga

[deepak]

ERRORhysDesignRules:368 - The signal <p<0>_OBUF> is incomplete. The signal is
not driven by any source pin in the design.
ERRORhysDesignRules:368 - The signal <p<1>_OBUF> is incomplete. The signal is
not driven by any source pin in the design.
ERRORhysDesignRules:368 - The signal <p<2>_OBUF> is incomplete. The signal is
not driven by any source pin in the design.
ERRORhysDesignRules:368 - The signal <p<3>_OBUF> is incomplete. The signal is
not driven by any source pin in the design.
ERRORhysDesignRules:10 - The network <p<0>_OBUF> is completely unrouted.
ERRORhysDesignRules:10 - The network <p<1>_OBUF> is completely unrouted.
ERRORhysDesignRules:10 - The network <p<2>_OBUF> is completely unrouted.
ERRORhysDesignRules:10 - The network <p<3>_OBUF> is completely unrouted.
ERROR:Bitgen:25 - DRC detected 8 errors and 5 warnings. Please see the
previously displayed individual error or warning messages for more details.


these are the errors i am getting while i am trying to run the ip core of multiplication on spartan 3e.its giving me output on ism(behavioral simulation)
but giving these errors while i am trying to run it througf fpga.can someone help??

 

[GaborSzakacs]

deepak wrote:

ERRORhysDesignRules:368 - The signal <p<0>_OBUF> is incomplete. The signal is
not driven by any source pin in the design.
ERRORhysDesignRules:368 - The signal <p<1>_OBUF> is incomplete. The signal is
not driven by any source pin in the design.
ERRORhysDesignRules:368 - The signal <p<2>_OBUF> is incomplete. The signal is
not driven by any source pin in the design.
ERRORhysDesignRules:368 - The signal <p<3>_OBUF> is incomplete. The signal is
not driven by any source pin in the design.
ERRORhysDesignRules:10 - The network <p<0>_OBUF> is completely unrouted.
ERRORhysDesignRules:10 - The network <p<1>_OBUF> is completely unrouted.
ERRORhysDesignRules:10 - The network <p<2>_OBUF> is completely unrouted.
ERRORhysDesignRules:10 - The network <p<3>_OBUF> is completely unrouted.
ERROR:Bitgen:25 - DRC detected 8 errors and 5 warnings. Please see the
previously displayed individual error or warning messages for more details.


these are the errors i am getting while i am trying to run the ip core of multiplication on spartan 3e.its giving me output on ism(behavioral simulation)
but giving these errors while i am trying to run it througf fpga.can someone help??

Apparently you have a top level output port p[3:0] that is not
ever driven by the design. In older versions of ISE, any undriven
output was tied to ground. Given that in a real piece of hardware,
unintentionally undriven outputs could cause board-level problems
if arbitrarily connected to ground, newer versions of ISE leave them
unrouted and then you will fail design rule check (DRC) when you
go to create the project. You need to either connect this output
port to something in the design, or remove it.

-- Gabor