gwr said:

| Uh oh, I thought this might eventually happen.  There are several
| problems with the current zs driver that would need to be solved
| before you can use all four lines for any purpose you like.
| 
| There is both a long-term, pretty solution, and a short-term,
| dirty solution.
[...]
| This would be nice, but will take a while to implement, so
| you probably want to hear about the quick-and-dirty way...

Well, I'm not yet familiar enough with the inner workings
to do it the "right" way, q&d will have to do for now...

| In zssoft() near line 1016, the input is dispatched off to the
| input handler for the type of channel (kbd/ms/tty).  This is
| one place where a layered driver should just call an input
| handler using a function pointer set during attach...

this did the trick

grazie
	--jeff

(On another note, this port seems a bit unstable, I assume
this is as expected and not just me?)