Error in FIFO Simulation ISE Xilinx

Hello, I am simulating a FIFO in ISE generated by CORGEN. The design
synthesizes and no errors or warnings indicate I have done anything
wrong. I am doing this simulation for a Spartan3E which is indicated
in my design summary. However, when I try to simulate I get the
following error:

** Failure:FAILURE: Use of behavioral models for Virtex-4 and Virtex-5
built-in FIFO configurations is currently not supported. Please use the
structural simulation model. You can enable this from CORE Generator by
selecting Project -> Project Options -> Generation tab -> Structural
Simulation. See the FIFO Generator User Guide for more information.
User(VHDL) Code Called Simulation Stop

I am not targeting a Virtex part anywhere so I have no idea why this
error would occur?

Is there any advice out there for what I (or most likely as usual ISE)
is doing wrong?

Thanks

nfirtaps

nfirtaps wrote:
> Hello, I am simulating a FIFO in ISE generated by CORGEN.
> I am not targeting a Virtex part anywhere so I have no idea why this
> error would occur?

Coregen is a Xilinx thing, not a VHDL thing.

> Is there any advice out there for what I (or most likely as usual ISE)
> is doing wrong?

The VHDL solution would be to
infer a dpram from a code template
and write code describing head (read only)
and tail (write only) address counters.

-- Mike Treseler

Mike Treseler