SPEED Serial adaptors User guide
Under SCO UnixWare
Page 94
Under SCO UnixWare
Device node details
Each serial port has three device nodes associated with it. Each node takes the form of a file
which you can access from operating system utilities and user applications. Details of these
nodes are shown in the next table.
Linux Device node details
Each serial port has two device nodes associated with it. Each node takes the form of a file
which you can access from operating system utilities and user applications. Details of these
nodes are shown in the next table.
Device name
Function
Description
Location
z1
Normal communications port
for local “tty” devices.
Indicates normal
communications port
behaviour.
/dev/term
Z1
Modem port
Indicates that a port open will
not complete unless DCD is
present
/dev/term
z1p
Transparent print port.
Indicates that device should
only be used for transparent
print.
/dev/term
Device name
Function
Description
Location
ttyS0
Normal communications port
Indicates normal
communications port
behaviour.
/dev
cua0
Modem communications port
wait for DCD on open
This device is used when
connecting modems to the
serial port.
/dev
