QLCC urq questions

[ejfluhr@austin.ibm.com (Fluhr)]

A few days ago I downloaded Robert Houk's annotating dissasembler and
microcontroller code for the MAC-02 (nice piece of work, btw, to RDH
and everyone who contributed).  I do have a few questions that I
think you guys can answer more quickly than it would take me to figure
it all out (a.k.a. laziness).

Which Motorola microcontroller is used in the MAC-02?  I have a technical
data book on a variant of the 68HC11, which seems to be mostly (if not
completely) compatible with the urq code.  I have encountered a few
discrepancies between the code and my databook, however, that I want
to clear up.

Secondly, Robert's annotations list one 8-bit bidirectional data
port, but nothing else.  How does the MAC-02 read the engine
speed, boost/vacuum pressure, intake manifold temp, etc.?  Is it
using other ports that I haven't yet stumbled on?

Thanks,
Eric
'85 Coupe GT
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Eric J. Fluhr                                Email:  ejfluhr@austin.ibm.com
630FP Logic/Circuit Design                   Phone:  (512) 838-7589
IBM Server Group                             Austin, TX