(Replying to my own message)
>I just located data sheets for the Z85C30 (which will hopefully be
>similar) on the Zilog web site:
>	http://www.zilog.com/
>
>FYI, they're in Adobe Acrobat (.pdf) format.  (This works fine for me,
>but non-SPARC unix folks may have trouble finding a reader. :-/)

Looks like I spoke too soon.  The "data sheets" have plenty of 
information on pinouts and signal timing, but I didn't see anything
about the software interface.

-- monroe
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Monroe Williams                                      monroe@teleport.com