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TMS320F2812 IIR Filter design

Hi,

I'm working on an old design that uses an F2812.  The code uses several FIR filters that have 256 coefficients.  I need to reduce the CPU load and thought I'd try using IIR filters instead.  I've come across sprc082 http://focus.ti.com/docs/toolsw/folders/print/sprc082.html and found there's a Matlab file called eziir32.m for designing an IIR filter for use with the TI library.

Does anyone know if the file iir32.asm will work with the F2812?

Should I be looking elsewhere?

I'd really like 145dB of attenuation, but the script crashes at 145dB attenuation.  It might be an octave bug, and not the case under Matlab.

Any thoughts?

Regards,

James.

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