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Rockbox mail archiveSubject: Re: System Tray USB IconRe: System Tray USB Icon
From: Fred Maxwell <rockbox_at_anti-spam.org>
Date: Fri, 23 Apr 2004 14:59:28 -0400 Glenn Ervin at Home wrote: > I really don't think that there is a printer made that can keep up with the > speed of the data sent through a parallel cable. An EPP parallel port has a typical transfer rate on the order of 500KB/S to 2MB/S. By the time you add the printer command language overhead, the protocol overhead, and the graphical data to be printed, etc., you can find many printers which are print-speed limited by the interface. In fact, I've worked with printers which have dual interfaces -- USB and Parallel -- and have noted shorter between-page pauses on graphics-intensive pages when using the USB interface. You need to consider that printers can assert a "busy" signal while their processors are busy. You can't dump data to them continuously, so the faster you transfer data while the window of opportunity is there, the lower the chance you will be in a situation where the printer is waiting for data. Regards, Fred Maxwell _______________________________________________ http://cool.haxx.se/mailman/listinfo/rockbox Received on 2004-04-23 Page template was last modified "Tue Sep 7 00:00:02 2021" The Rockbox Crew -- Privacy Policy |