erik andersson wrote:
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Can a 80c320 at 25Mhz manage to decode mp3 to wav? or does it require more speed?
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I was wondering about the this problem myself. Would you happen to have any generic C source code for decoding MP3 data ?
I would like to port such code (or at least the main algorythem) and test it out on real hardware.

Aside from using the best 8-bit configuration (i.e. fast external SRAM cobined with a Dallas processor at 33MHz), it's very likely the math routines will have to be tweaked and optimized with emphasis on using the internal RAM for best performance.

A much more promising (and not much more expensive) way to go would be with a 33MHz 16-bit XA processor with it's impressive ALU and larger on-chip RAM.

Do you have a breakdown of the type and number of required operations for MP3 decoding (16-bit, 32-bit, complex numbers etc.) ?