I have a copy of the datasheet for the (venerable)
SP0256 speech processor, but I need more information.
I'm trying to simulate the (non-allophone) chip in a
DOS/Windows environment, and I need the format of the
sound data that an external speech ROM would send to
it.  From what I can gather, the data is grouped into
frames, where each frame contains 17 bytes, for the 17
internal registers in the chip.  What I don't know are
what the registers are and the data format.  I've
looked at the datasheet and application notes for the
older chip, the SP0250, but that chip had only 15
registers so the data format must be somewhat
different.  Does anyone have an applications guide for
the SP0256 (or any other document) that has this data
format?

Thanks in advance.

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