> Well, that's a start.  Have you ever wondered what happened to change
> apple's openness?  The Apple II+ came with a user manual that included a
> complete copy of the sources for the ROMS and an in-depth description of
> how to program _everything_.  I don't think mac manuals even have pin-outs
> for the ports.

Check out _Guide_to_the_Macintosh_Family_Hardware, second edition.
It talks some about the IWM, and I think a smidgeon on the SIWM.
It does give pinouts for the port.

Take care,

Bill