[net.unix-wizards] LA120 problems

edhall%rand-unix@sri-unix.UUCP (11/15/83)

If LA-120's jog DTR when they *transmit* a ^D I'd call it a bug.
Terminals like TTY-43's did lower DTR when they *received* ^D's,
but transmitted them without a wimper.  The V7 UNIX tty driver
(ah, the old days!) would inhibit echo of the ^D when in COOKED
mode, allowing the hoards of TTY's around Bell to send ^D's with
impunity.  The much-maligned 4.1BSD tty driver preserves this
tradition.

CBREAK and RAW mode are another matter--^D's are echoed just fine
in these modes.  Could it be that you are in one of these modes
when you sign off?  Or (gasp) half-duplex?  Or is the LA-120 that
brain-damaged?

		-Ed Hall
		edhall@rand-unix
		decvax!randvax!edhall

ron%brl-vgr@sri-unix.UUCP (11/21/83)

From:      Ron Natalie <ron@brl-vgr>

Yeah, we actually had those teletypes with the ORIGINATE/ANSWER modem, a
telephone dial, and the funky out of service light built into the ASR33
to the right of the keyboard.  Control-D hung up the modem.  Great fun
to send them to a user's terminal when he was logged in via one.

Fortunately the model 37 doesn't do this or else the all the NROFF
hackers would have insisted on a new EOF character a long time ago.

-Ron