Comtrol SCO OpenServer - Manual (Page 38)

38 Troubleshooting
SCO OpenServer
Retaining Non-default Parameters on a Disabled Port
Drivers only retain stty settings for a particular line as long as that
line is open. Likewise, when you do an stty on a closed port, the stty
settings are not retained. When you apply stty settings to your login
tty, the changes are retained because even after stty terminates, the
login shell continues to hold the line open.
To make stty settings permanent, enter these commands:
(while:; do sleep 3600; done) < /dev/ttyrXX &
stty desired parameters < /dev/ttyrXX
Where XX is the board/port number, and desired parameters are the
desired stty command parameters.
The effect of this is to open, set, and close the port, but because this is
nested inside the first open, the parameters will stick. You may place
these lines in one of the boot scripts in the rc.d directory.
Transparent Print: Known Issues
The stty command is not effective for auxiliary devices supported by
transparent print.
If the corresponding terminal is very busy, output to the printer may
be extremely sluggish or not at all.
Applications that use spreadsheets, menus, windows, and so on send
escape sequences to the terminal. Escape sequences cannot be broken
up by data going to the printer. Output to the screen is given top
priority, and output to the printer is passed through only when nothing
is going to the screen, in order to ensure that escape sequences are not
broken up.