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Stefan Oedenkoven · Guest

hi ng,
i get the following error-message during "Programming File Generation":

ERROR:Bitgen:145 - Pin M6 is a persistent pin, but a component exists in
it's
IOB. Please rerun par with the persistent pins prohibited from use.
ERROR:Bitgen:157 - Bitgen will terminate because of the above errors.
Error: bitgen failed
Reason:
Process "Programming File Generation Report" did not complete.

Here is the evil code fragment:

pIR : process (CLK, Reset)
begin
if Reset = '0' then
Pending <= '0';
elsif CLK'event and CLK = '1' then
if IRQ = '1' then
Pending <= '1';
elsif Clear = '1' then -- when i remove "elsif-clause" it
generates the bitstream without an error
Pending <= '0'; -- (synthesizing without errors with AND
without the "elsif-clause")
end if;
end if;
end process;

Anyone have an idea? We have ISE 6.2.03 (and currently only Spartan3) here
and i don't use an ucf-file
which assigns Pin M6 to the design. An i can't find this PAR Option in the
PAR-Contextmenu (even not in advanced mode). The Rest of the module is only
the entity-declaration, so it's not possible that the design gets too big
with this "elsif-clause".

thanks,
Stefan

Marc Randolph · Guest

Stefan Oedenkoven wrote:

Stefan Oedenkoven · Guest

Hi Marc,

code fragment causes error during bitstream generation... IS

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