Re: quieries related to math handling in micro controllers



Tim Wescott wrote:


It's not clear what you mean by "mathematical processor". If you're looking for a coprocessor to use with your 8051, I don't think anyone makes those any more -- there are too many good processors, and it's too easy to whip one up on an FPGA if you just _have_ to have a coprocessor. If you're looking for a processor that's faster at math than an 8051, then look at just about anything that's not an 8051.

While ago, in the course of PIC/AVR flame war, we tried the generic C implementation of the FFT as the floating point benchmark. IIRC the PIC16 appeared to be somewhat 20% slower then the AVR if compared to the same instruction rate. In the other words, the difference was not very significant. Probably the x51 would achieve the similar results if the instruction rate is the same.


Vladimir Vassilevsky
DSP and Mixed Signal Design Consultant
http://www.abvolt.com

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