> I've got no interest in the 18F family at this point for several
> reasons, none of which are particularly germane to this
> discussion.  I suppose I could use an external parallel RAM to
> store tons of samples, which would be really nice, but I'm
> trying to keep the physical size to a minimum

You should be able to quite easily find an old HDD logic board
with at least one 32kB SMT SRAM on it. One of those would
fit into the footprint of an F877. Either that or an S-DIP cache
from a motherboard

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