No.
None that I know of.
Maybe not for you. But plenty of people would disagree with you, and say that the extra USB support for newer chips, Arraywrite/read and (depending on how old the version of PBP is) longs, etc, the upgrade is plenty worth the $25.
Just curious. Is is the 16 million instructions per second that is too slow for your application, or did you need some DSP? Or is it the "more power!" (Tim Taylor) syndrome?
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