Date: Wed, 26 Sep 2007 12:32:14 -0700 From: Bill Campbell <freebsd@celestial.com> To: freebsd-questions@freebsd.org Subject: Re: Keyboard without Scroll Lock Message-ID: <20070926193214.GC12263@ayn.mi.celestial.com> In-Reply-To: <20070926185007.GA1560@mugin.localhost> References: <20070926171718.GA1155@mugin.localhost> <20070926182239.GA2992@ayn.mi.celestial.com> <20070926185007.GA1560@mugin.localhost>
next in thread | previous in thread | raw e-mail | index | archive | help
On Wed, Sep 26, 2007, Harry Matthiesen Jensen wrote: >On Wed, Sep 26, 2007 at 11:22:39AM -0700, Bill Campbell wrote: >> > >> >just for info, if you happens to buy a keyboard without the Scroll Lock >> >key, as I did (Logitech EX110), and are missing this function in consoles, >> >I found a solution with re-configuring the keymap (I'm probably not the >> >> A far simpler way is to use xoff/xon, ctrl-s stops things, and >> ctrl-q restarts. > >Is there a set-up I need to perform before it works, because simply >pressing "Ctrl+Q"/"Ctrl+S" does not give me anything. You will only see the effect of these if the system is sending data to the screen. Try typing ``cat /etc/termcap'', the pressing ctrl-s to stop the flow, and ctrl-q to restart it. This is basic serial software flow control, used by terminals to slow down traffic from the system to allow the terminal to catch up with the traffic. This protocal dates back to the days of slow teletypes which ran at speeds around 110baud (10 characters per second). I think that the Scroll Lock key simply toggles this, sending alternate ctrl-s, ctrl-q to stop and start traffic. Scrolling back through the stream is a function of the underlying system, and has nothing to do with the flow of data. Bill -- INTERNET: bill@celestial.com Bill Campbell; Celestial Software LLC URL: http://www.celestial.com/ PO Box 820; 6641 E. Mercer Way FAX: (206) 232-9186 Mercer Island, WA 98040-0820; (206) 236-1676 During times of universal deceit, telling the truth becomes a revolutionary act. --George Orwell
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20070926193214.GC12263>