On Thu, 4 Nov 1999, David Wetzel wrote:

> > From: Chris Tribo <t1345@hopi.dtcc.edu>
> > Organization: Delaware Technical & Community College
> > To: David Wetzel <dave@turbocat.de>, port-pmax@netbsd.org
> 
> > DTE of 230kbps. For some reason Apple never made a 56K GeoPort modem
> > (all models had voice mail/fax and some sort of speech recognition
> > features). And it seems that they have abandoned the technology
> > alltogether. As for the actual function of the Ninth pin, I have no
> > idea. I don't have a pinout for the Mini-8, but I will check it out as I

The extra pin supplied +5 V power out the port, so that the geoport thing
wouldn't need a power cord.

> > believe I have a doc saved on my computer at home that has DB-9 to
> > Mini-8/9 conversion.
> 
> Hm. It could be like this??
> 
>      NeXT 68040 to Modem Cable
> 
>      Mini-Din       RS-232
>      1   (DTR)      20   (DTR)
>      2   (DCD)      8    (DCD)
>      3   (TXD)      2    (TXD)
>      4   (GND)      7    (GND)
>      5   (RXD)      3    (RXD)
>      6   (RTS)      4    (RTS)
>      8   (CTS)      5    (CTS)
> 
> But before I nuke my 1000 DM phone and my PowerBook, I would like to hear  
> some comments...

Nope. Mac serial ports don't have RTS going out them for one. :-)

Check out http://www.wam.umd.edu/~zben/mac/MacSerHard.html

Take care,

Bill