> isn't 'keeping up' with the changes in the signal. When the signal
> isn't repeated zeros (or ones) then then step size is reduced to
> hopefully allow the ouput to track small signals more acccurately

The DSP outputs a "dithering" stream of 01010101 when the input
is unchanging. A simpler scheme would imply that 00000000 would
be outputted, and I wonder if this is a result of the expansion of the
stored data as it goes through the integrators and the DAC. As you
say, the slope of the wave, whether up or down, is indicated by the
number of consecutive 1s or 0s. So the question still is (for me any
way) what exactly is the definition of those two integrators and from
there, how would their functions be accomplished in s/w ? I have
asked the list this some time ago and haven't had any bites, so I'm
assuming that no one knows

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