SPEED Serial adaptors User guide
Under SCO OpenServer 5
Page 93
Under SCO OpenServer 5
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.
Device name
Function
Description
Location
ttyz1
Normal communications port
for local “tty” devices.
Indicates normal
communications port
behaviour.
/dev
ttyZ1
Modem port
Indicates that a port open will
not complete unless DCD is
present
/dev
ttyz1p
Transparent print port.
Indicates that device should
only be used for transparent
print.
/dev