serials printers with Xenix 2.3.2

[Jonathan Bayer]

jim at bahamut.fsc.com (James O'Connor) writes:

>Is there a special stty setting that must be turned on (or off) to get a
>serial port to use DTR handshaking with a serial printer?  Should I use 
>/dev/tty1G instead of /dev/tty1g?

>In the absence of DTR handshaking, what is the best way to set a serial
>printer up to do XON/XOFF handshaking?  With the way I have it set now, with a
>line like:

>stty 9600 opost ixon 0<&1

>in lp/interface/billing, the interface script just stops printing at some
>point (while there are still jobs in the Q).  Turning the printer off/on
>doesn't help (I don't think it sends an XON at power up, it's an Oki 293
>printer).  The only way to fix it is to run "lpshut", realign the printer,
>then run "lpsched".  This is no fun when printing invoices or checks.  If the


I had this same problem at one of my customers.  It turns out that the
problem started right after upgrading to 2.3.2 from 2.2.1 (I know, a big
upgrade.)  The solution was to change the stty settings to the
following:

	stty 9600 cs8 onlcr tab3 ixon ixoff clocal 0<&1


I got these settings simply by making a new printer, specifying it to be
a serial printer, and comparing the settings created with the settings
from the original printer.  They were different.  Since I changed them
to the above settings I have had no problems with that printer.

JB
-- 
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