Undocumented LAT printer "feature" -- save for your records!!

[Dan Barrett]

	If you have any printers hooked up via LAT, then there is something
you should know.  According to Ultrix Software Support, you should NEVER
associate your very first LAT tty with a printer:  it causes unpredictable
glitches.

	This is undocumented.

	You can find your "first" LAT tty by doing to /dev and typing:

		$ file tty* |grep 39
		tty02:  character special (39/0) LAT #0 terminal #0
		tty03:  character special (39/1) LAT #0 terminal #1
		tty04:  character special (39/2) LAT #0 terminal #2
		tty05:  character special (39/3) LAT #0 terminal #3
		tty06:  character special (39/4) LAT #0 terminal #4
		...

In the above example, tty02 is the first LAT tty (LAT #0, terminal #0).
So, you should never dedicate /dev/tty02 for a LAT printer -- always
for a normal terminal.

	Put a note in /etc/ttys next to this tty entry, saying that
it should always be used for a terminal and never a printer.

	I don't know anything more about the reason.  In fact, when I
asked the Software Support engineer, he said they had discovered this
glitch "by experience".

                                                        Dan

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| Dan Barrett, Department of Computer Science      Johns Hopkins University |
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