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Sun Aug 5 16:34:22 EDT 2018

Sequencer

So this really is pretty much it.  The rest is instruction decoder and
memory/stack access.  Those are fairly involved by themselves but
there doesn't seem to be any magic.

E.g. a pattern sequencer needs:
- set io/o
- set loop count
- decrement and branch

This is best done using a driver application.


It might be better to implement function calls first.  For the
application I don't yet need other kinds of conditional jumps, just
nested Forth for..next loops.

How to begin?

One bit in the instruction can be used for:
- if zero, pop stack and continue
- if nonzero, decrement and jump
- push number to stack




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