On Wed, 18 Dec 2002 mickey_m@xxxxxxxxx wrote:
> While I was making my cart, I put a frequency counter on A12 and got about a
> 1Mhz for access. I now this isnt the best way to do it, but it was enough for
> me to realize that there was no way my microcontroller was going to be able to
> make it. Remember that some microcontrollers take multiple clock cycles per
> instruction. I was running at 20MHz but, at 4 cycles per instruction I was
> really at 5MHz. Thats at best 5 instructions per cart read! Not enough time
> for me. I looked into CPLDs.
Ubicom (formerly Scenix) makes a 50MHz 8 bit micro (SX52BD) which
does one instruction per cycle.
50/1.19 ~= 42 instructions per read.
Still a little tight for me. I'm looking at CPLDs now.
--
Will code for food. http://cuddlepuddle.org/~adam/resume.html
adam@xxxxxxxxxxxxxxxx http://cuddlepuddle.org/~adam/pgp.html
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