EQ6 (etc) goto

I've been idly thumbing through the EQ6 yahoo group & checking out some goto
kit sites and it crossed my mind: why isn't it possible (or rather, is it
possible) to just create a software solution to making any scope with a hand
controller goto by writing the write driver & getting a cable that'll match
a serial port & a phone plug? ... surely all that gets sent down through the
telephone jack is a set of pulse signals to tell the stepper motors to move
in a certain direction. Swap the hand controller for a driver and hey
presto, no motors etc need to be changed. It may be a slow goto scope,
sure, but it'll still be a goto scope. Yes or no?

Been cloudy here for a week ...

Regards, Michael
--
Non, Je Ne Regrette Rien. E.P.