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- Path: sparky!uunet!dtix!darwin.sura.net!zaphod.mps.ohio-state.edu!cis.ohio-state.edu!ucbvax!pdx.mentor.com!thompson
- From: thompson@pdx.mentor.com
- Newsgroups: comp.sys.apollo
- Subject: re: sio vs tty (was High speed modem attached to 3500)
- Message-ID: <199208201459.AA26110@pan.ssec.honeywell.com>
- Date: 20 Aug 92 14:59:37 GMT
- Sender: daemon@ucbvax.BERKELEY.EDU
- Organization: The Internet
- Lines: 50
-
-
-
- > => P.S. What's the difference between using /dev/sio1 vs. /dev/tty01? They
- > => both seem to work with kermit.
- > I don't know the exact difference but I can give you some effects:
- > 1) We've written our own getty to be able to handle some of the
- > hayes stuff and this cause problems when using /dev/sio? because
- > it seems to ignore the hardware handshake stuff, even when it is
- > set using BSD calls
- > 2) When using /dev/tty?? and doing a /com/tctl on that same line.
- > Then the hardware flips one of the hardware line, the moden goes
- > down and the apollo-side terminates the session.
- >
- > I haven't really looked very deep into this, and depending on
- > given time will probably never be able to do so.
- > (Disabeling /com/tctl is fast and cheap. :-) )
-
- From the 10.1 (!!) release notes. It's probably also in the later release notes
- too. I won't try to interpret the info presented here, since I try to avoid
- being involved with hardware. (This from a sys-admin! :-)
-
- : UNIX SIO line software now fully supports all UNIX line protocol
- : semantics. The Aegis SIO software continues to support the Aegis
- : semantics. As a result, the /dev/sio# files and the corresponding
- : /dev/tty0# files refer to the same devices, except that the state of
- : the DCD line is always ignored on open by /dev/sio# devices. For a
- : detailed description of this change and its effects, see _Making_The_
- : _Transition_To_SR10_Operating_System_Releases.
- :
- : The SR10 SIO software initializes the /dev/sio# devices to settings
- : different than those used in previous releases. Use the -default
- : option of the tctl command to obtain the pre-SR10 settings. For exam-
- : ple, to set SIO line 3 to the pre-SR10 settings, do this:
- :
- : tctl -default -line 3
-
-
- -- jt --
- John Thompson
- Design Services Engineer / Sys-Admin
- Honeywell, SSEC
- Plymouth, MN 55441
- thompson@pan.ssec.honeywell.com
-
- What do I know? I'm just a Token Administrator.
- *************************************************************************
- * This e-mail correspondence is a work of fiction. Any similarity *
- * between the views presented and actual views, personal or corporate, *
- * living, dead, or still to be conceived, is pure coincidence. *
- *************************************************************************
-