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From: "Bob Bailin" <72027.3605@compuserve.com>
References: <Xns96D17CB24085rickpalen@69.28.186.121> 
Subject: Re: OSR6 stty rtsflow ctsflow missing
Message-ID: <Sv_Ve.541$gK.457@newssvr22.news.prodigy.net> 
Date: Wed, 14 Sep 2005 19:05:22 GMT


"Rick Palen" <rickpalen@hotmail.com> wrote in message 
news:Xns96D17CB24085rickpalen@69.28.186.121...
> Hi All,
>
> I have just upgraded a site from OSR 5.0.5 to 6.0.0.  This has
> gone mostly well.
>
> I am now trying to set up DigiFax which they have been using for
> years.  I tried to set hardware flow control for the modem port
> using stty -ortsfl ctsflow rtsflow but stty no longer recognizes
> any of those three flags.  They are still in the docs!
>
> Anybody know where they went or what I may be doing wrong?  How
> can I set up hardware flow control for tty1A?
>
> Thanks,
> Rick Palen

You're doing nothing wrong. It looks like they're changing over
to rtsxoff and ctsxon, but these options aren't enabled in stty yet,
and the man pages for stty and termio haven't been updated.
Look at man asyc for other options to open the serial port
with certain modes already enabled, by using devices in /dev/tty*
and /dev/term:

# l /dev/tty1[aA]
crw-rw-rw-    1 root     root       3,  3 Aug 30 12:03 /dev/tty1A
crw-rw-rw-    1 root     root       3,  2 Aug 30 12:03 /dev/tty1a

# l /dev/tty00*
crw-rw-rw-    1 bin      bin        3,  0 Jul 21 06:51 /dev/tty00
crw-rw-rw-    1 root     root       3,  1 Aug 30 12:03 /dev/tty00h
crw-rw-rw-    1 root     root       3,  3 Aug 30 12:03 /dev/tty00m
crw-rw-rw-    1 root     root       3,  0 Aug 30 12:03 /dev/tty00s
crw-rw-rw-    1 root     root       3,  2 Aug 30 12:03 /dev/tty00t

# l /dev/term/00*
crw-rw-rw-    1 root     root       3,  0 Aug 30 12:03 /dev/term/00
crw-rw-rw-    1 root     root       3,  1 Aug 30 12:03 /dev/term/00h
crw-rw-rw-    1 root     root       3,  3 Aug 30 12:03 /dev/term/00m
crw-rw-rw-    1 root     root       3,  0 Aug 30 12:03 /dev/term/00s
crw-rw-rw-    1 root     root       3,  2 Aug 30 12:03 /dev/term/00t

So, /dev/term/00t and /dev/tty00t are the equivalent of /dev/tty1a (terminal),
and /dev/term/00m and /dev/tty00m are the equivalent of /dev/tty1A (modem).

/dev/term/00h and /dev/tty00h have RTS/CTS (hardware) handshaking enabled.
(This is the one you're looking for.)

/dev/term/00, /dev/term/00s, /dev/tty00 and /dev/tty00s have XON/XOFF
(software) flow-control enabled.

Bob 

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