This
chapter describes the use of the terminal driver (TTDRIVER) and the
LAT port driver (LTDRIVER). The terminal driver supports the asynchronous,
serial line multiplexers.The
terminal driver also supports the console terminal. The LAT port driver
accommodates I/O requests from application programs; for example to
make connections to remote devices, such as a printer, on a server
(see “LAT Port Driver QIO Interface”).