Relevant manual pages are
  stty.1, thisisa.1,
  stty.2, terms.2, gtty.2,
  ttyn.3,
  tty.4,
  getty.8
which will be found in the 'doc' subdirectory.

	This is the new teletype handler.
It offers all the functions usually associated with a
teletype handler.  Note that it has only been tested for
the DL/KL DH and DHDM devices.  Other device handlers
will require modification (except dhfdm).
Let $i be the directory containing this file, then
to install it :-
cd $i
as terms.s
mv a.out terms.o
ar r /lib/libc.a terms.o
cc getty.c
chmod 755 a.out
mv /etc/getty /etc/getty.b
mv a.out /etc/getty
cc login.c
chmod 4755 a.out
mv /bin/login /bin/login.b
mv a.out /bin/login
cd /usr/sys
cp $i/sys/tty.h tty.h
cd dmr
cc -c -O $i/sys/tty.c $i/sys/dh.c $i/sys/kl.c $i/sys/dhdm.c
: dhfdm.c snd sys.c must be re-compiled for the tty structure
cc -c -O dhfdm.c sys.c
mv ../lib2 ../lib2.b
ar r ../lib2 tty.o dh.o klo. dhdm.o dhfdm.o sys.o
cd ../ken
cc -c -O $i/sysent.c
mv ../lib1 ../lib1.b
ar r ../lib1 sysent.o
cd ../conf
as $i/sys/m40.s .
mv a.out m40.o
$i/ccasld
cp /unix /unix.b
mv a.out /unix
This macro has not been tested.
The /etc/ttys file must be edited to conform with the
new getty.  The ccasld macro is a system generation macro.
The new login is the same as the distributed
version, except that "You have mail" is printed before
the message of the day, and the users "erase" and "kill"
characters are set to <delete> and ^u respectively
	The new sysent.c has an entry for the "terms" system
call, as system call 27.
	The only change to m40.s is the inclusion of zapc
in the getc/putc group of routines.
