Re: Cinematronics BPROM alternatives

William Boucher wrote:
>
> I have also designed a replacement for the larger BPROM (74S287 256 x
> 4) located at F14. For a first effort, it is based on a Xilinx
> XC9536. I couldn't get all of the data to fit into a cheaper SPLD but
> I'm open to suggestions if someone has a smaller cheaper chip in mind
> for the job. I still have to build a socket adapter to try it. For
> now, the design is done and the code is written in VHDL but I haven't
> tried it in a running board yet.
>

> How close to fitting this chip into an XC9536 (area wise)? If you are
> really close, you might want to play with a few of the settings to
> optimize for area. It seems like thr 36 should be good enough for
> what amounts to 4, 8 input logic functions. I could try running this
> thru a "better" synthesis tool for you if you'd like. (again, this
> assumes you are around 10% over the logic in the device.

Ed

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Received on Fri Oct 2 04:04:01 2009