From owner-freebsd-current Sat Jun 21 00:23:35 1997 Return-Path: Received: (from root@localhost) by hub.freebsd.org (8.8.5/8.8.5) id AAA17489 for current-outgoing; Sat, 21 Jun 1997 00:23:35 -0700 (PDT) Received: from innocence.interface-business.de (innocence.interface-business.de [193.101.57.202]) by hub.freebsd.org (8.8.5/8.8.5) with ESMTP id AAA17479 for ; Sat, 21 Jun 1997 00:23:31 -0700 (PDT) Received: (from root@localhost) by innocence.interface-business.de (8.6.11/8.6.9) with UUCP id JAA01785 for freebsd-current@FreeBSD.ORG; Sat, 21 Jun 1997 09:21:25 +0200 Received: (from j@localhost) by uriah.heep.sax.de (8.8.5/8.8.5) id JAA10073; Sat, 21 Jun 1997 09:13:06 +0200 (MET DST) Message-ID: <19970621091306.KP10523@uriah.heep.sax.de> Date: Sat, 21 Jun 1997 09:13:06 +0200 From: j@uriah.heep.sax.de (J Wunsch) To: freebsd-current@FreeBSD.ORG Subject: Re: getty modem control References: <199706200815.IAA15687@veda.is> <199706202227.PAA24698@phaeton.artisoft.com> X-Mailer: Mutt 0.60_p2-3,5,8-9 Mime-Version: 1.0 X-Phone: +49-351-2012 669 X-PGP-Fingerprint: DC 47 E6 E4 FF A6 E9 8F 93 21 E0 7D F9 12 D6 4E Reply-To: freebsd-current@FreeBSD.ORG In-Reply-To: <199706202227.PAA24698@phaeton.artisoft.com>; from Terry Lambert on Jun 20, 1997 15:27:38 -0700 Sender: owner-current@FreeBSD.ORG X-Loop: FreeBSD.org Precedence: bulk As Terry Lambert wrote: > > Further to the discussion on the subject of (m)getty back in > > February, would it work to use DSR as RI for those ports > > without RI? > > 9 pins: > > chassis ground (evil waste of a pin) > TXD > RXD > RTS > CTS > DSR > signal ground > DCD > DTR Wrong. Try again. The DB-9 connector doesn't have a protection ground pin. But it does have a ring indicator pin (pin 9). What they've been dropping was things like the external clock lines. So while it's not that evil that UART-equipped PC cards have only a DB-9, it's evil if modem manufacturers start to produce DB-9 equipped modems, since you cannot run them in (externally clocked) sync mode anymore. -- cheers, J"org joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ -- NIC: JW11-RIPE Never trust an operating system you don't have sources for. ;-)