From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by befuddled.reisers.ca (Postfix, from userid 65534) id BAB751F094A; Wed, 7 Jun 2017 21:23:09 -0400 (EDT) Received: from out1-smtp.messagingengine.com (out1-smtp.messagingengine.com [66.111.4.25]) by befuddled.reisers.ca (Postfix) with ESMTPS id 0CE941F093F for ; Wed, 7 Jun 2017 21:23:08 -0400 (EDT) Received: from compute2.internal (compute2.nyi.internal [10.202.2.42]) by mailout.nyi.internal (Postfix) with ESMTP id A23D4208EF for ; Wed, 7 Jun 2017 21:23:04 -0400 (EDT) Received: from frontend1 ([10.202.2.160]) by compute2.internal (MEProxy); Wed, 07 Jun 2017 21:23:04 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=fastmail.fm; h= content-type:date:from:in-reply-to:message-id:mime-version :references:subject:to:x-me-sender:x-me-sender:x-sasl-enc :x-sasl-enc; s=fm1; bh=UTMQ7Y3icUXR03rlI0YMxMx73RKMNb4RQgoQtqdFa kE=; b=kgG7urOSRX7oZSDc3e7kBW0GcBCUWG7g8tl8jasJJq13yzZUUOAOEYCCQ oBrbsS4lfDNXOC2Os4IhXfodMSIO88mm2E8PGwXYgxhMFNe9Wsg9lH6wuAgLvLiS KUxVeGKo3Nz4zc49q44tWTqIoIPrmq4mvISghkVCjlk4tWrZ3GhgSDJvmd4+86A7 NpjvJwCcDQ43SBDqfhNswcz1UtgAXTwTZ5vuzq5BDRQGMr+9vOM2sBxbkmcy+ZzE uxp+3F9zHMu5PMBxJhjz2Q0Nb2f5w9Rk0jusIkfdUV7P7jrKgtHoekz3NU8R9sHW ixWN7q+qrInQKmTzm0+PvcwAulrNQ== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to:x-me-sender :x-me-sender:x-sasl-enc:x-sasl-enc; s=fm1; bh=UTMQ7Y3icUXR03rlI0 YMxMx73RKMNb4RQgoQtqdFakE=; b=fppjziQq0gPSOyA9b33EqKfxvZYpxoH5XN lu7GubjBi13MyN3xtmEqjmmpd8dCqSuL1bypfKG3O58uS1kWIRguood70wnXxOo2 MfopX/bIEB5zI/aMsTsZ/j8C2NI+FRv5i6UOqLfMM7ivX2ShgdRPDVSLRbrmQ9qE PbXMgzi574Jj4q4naiddvvsYyV5lQj2znHtB+TnyXmE/qZ74aoNrw8SLss/UqqzX m1R3rAfPKg1GFqvrmPmT2HM6Lk+WhrXmcD5qGfQFnTVLguELfK4SCvg8xfVzBcNf tCKfJhmk8Am0WannZ36a62sZ+h8dHClk+GjGjUS+eBzrrbJoqDWA== X-ME-Sender: X-Sasl-enc: YVHMdeCQwp/kQo5+1fwJNPWGEo9XLokMwVW1ThONNRib 1496884984 Received: from qlf.suddenlink.net (unknown [47.208.139.193]) by mail.messagingengine.com (Postfix) with ESMTPA id 25C477E712 for ; Wed, 7 Jun 2017 21:23:04 -0400 (EDT) Date: Wed, 7 Jun 2017 18:22:56 -0700 From: Tom Fowle To: speakup@linux-speakup.org Subject: Re: supporting more than ttyS* Message-ID: <20170608012256.GA3292@qlf.suddenlink.net> References: <20170602233159.GA13309@gregn.net> <20170602235657.hp5ta2g6jvrsijle@var.youpi.perso.aquilenet.fr> <20170603004451.GA24509@gregn.net> <20170603123241.dvmmhbdq2cwz7nnl@var.youpi.perso.aquilenet.fr> <20170604062241.GD4605@qlf.suddenlink.net> <20170604083717.nrmaztqgzym2rxos@var.youpi.perso.aquilenet.fr> <20170604224730.GA22575@gregn.net> <45AB8D04-640E-418B-B002-4B232F118A4D@gmail.com> <20170607134012.GA2444@sanghar> <20170607135834.nsx7vtgfmzvdlmxe@var.youpi.perso.aquilenet.fr> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20170607135834.nsx7vtgfmzvdlmxe@var.youpi.perso.aquilenet.fr> User-Agent: Mutt/1.5.21 (2010-09-15) X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 X-BeenThere: speakup@linux-speakup.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Speakup is a screen review system for Linux." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 08 Jun 2017 01:23:09 -0000 On Wed, Jun 07, 2017 at 03:58:34PM +0200, Samuel Thibault wrote: > Okash Khawaja, on mer. 07 juin 2017 14:40:12 +0100, wrote: > > Some synths also toggle serial control lines which I am not sure will > > be possible or supported by default in lp. > > Well, the serial control lines don't make any sense for a parallel port. > But there might be some parallel ports lines used for the same kind of > signalling, manuals of these syntheses should be checked. > > > So I suggest, for the first pass we limit lp support to bns, acntsa, > > dummy and txprt. Then we expand it to other synths based on their > > functionality, e.g. on ltlk we disable indexing and interrogating to > > print ROM version. > > Sounds good. > > Samuel There are at least two control lines on a basic printer parallel port, an output that is put high when the data lines have been setup, and I thiink taken low again after a defined time. There is an input, from the external device, that goes high when the device is busy and low again when it's ready to receive a new character. Sorry I've forgotten the names of these, but that's the basics. Of course there are bidirectional parallele ports, but they get rather complex as pins must change function as direction changes. I'd be surprised if synths used bidirectional ports as way back they weren't common and everybody'd have to test for them. Tom Fowle > _______________________________________________ > Speakup mailing list > Speakup@linux-speakup.org > http://linux-speakup.org/cgi-bin/mailman/listinfo/speakup