Removing disconnected tty drivers

[Slawa Olhovchenkov]

On Thu, Oct 02, 2014 at 04:50:11AM +1000, Peter Jeremy wrote:

> On 2014-Oct-01 10:59:52 -0700, John-Mark Gurney <jmg at funkthat.com> wrote:
> >Peter Jeremy wrote this message on Wed, Oct 01, 2014 at 20:03 +1000:
> >> See
> >> https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=152253
> >> https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=158086
> >> unfortunately, I no longer have access to the hardware.  I'm happy to
> >> update the patches to compile on -current but can't do more than that.
> >
> >I think I have digi hardware (an old ISA card), and I just recently
> >upgraded a box to HEAD that has ISA slots, so I'll look at testing
> >out these patches...
> 
> Note that I only had access to PCI hardware and the ISA bus interface
> was significantly different so those patches only support PCI cards.
> (I'm not sure how much effort would be necessary to get it working
> with both ISA and PCI).

As I remember ISA/EISA and PCI different only in interrupt path.
All other logic is common.