NAME

duart − on board serial ports

SYNOPSIS

this device is automatically included; no config info is needed

DESCRIPTION

The on board serial ports for the IRIS system provide four serial ports, one of which is consumed supporting the IRIS keyboard.  The remaining three ports support fully the rs 232 standard. 

Each serial line attached to the back panel behaves as described in termio(7). Input and output for each line may independently be set to run at any of 16 speeds; see termio(7) for the encoding.

Unfortunately, due to a historical botch, the UNIX device names for the on board ports do not match the back panel definition.  Unix uses a zero based numbering scheme, with port 0 being the keyboard.  The back panel uses a one based numbering scheme. 

FILES

/dev/ttyd[0-3]

SEE ALSO

termio(7)

Version 2.3  —  July 04, 1985