| > What if we add a driver that uses the minor number to traverse the
| > ttylist to locate an instance and redirects to that driver?  That
| > way you can create a set of `/dev/tty??' and `/dev/dty??' and not
| > have to mess with a different set of names for each serial controller.
|
| why it is a mess? it is an adventage.

Because now you need to be concerned whether your serial port is
/dev/ttya or /dev/ttyZa or /dev/ttyCa or /dev/ttyHa or /dev/ttyEa....

Eduardo