Cycle Computer Corporation Sun clone board...

[der Mouse]

> Heh, so I just discovered. The parallel port lines up with what's
> labelled as Serial port A on the back of the case :-(

> Luckily I don't think I've destroyed any serial hardware on the PC I
> was using as a terminal!

That is not entirely coincidence.  Serial ports are supposed to have
enough impedence that you can apply any voltage in some wide range like
±25V (relative to ground) to any pin or combination of pins without
damage.  Certainly well beyond anything a parallel port is going to
produce.

Of course, lots of peecee makers ignore the spec in other ways, so they
might ignore it in this repsect too...but at least it's _supposed_ to
be able to survive such treatment.

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