Date: Tue, 19 Nov 1996 13:07:41 +1030 (CST) From: Michael Smith <msmith@atrad.adelaide.edu.au> To: adam@veda.is (Adam David) Cc: freebsd-hackers@freebsd.org, freebsd-questions@freebsd.org Subject: Re: split speed sio port? Message-ID: <199611190237.NAA25979@genesis.atrad.adelaide.edu.au> In-Reply-To: <199611190117.BAA02796@veda.is> from Adam David at "Nov 19, 96 01:17:03 am"
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Adam David stands accused of saying: > Is it possible with the sio driver to set a serial port to receive at > 38,4 kb/s and transmit at 115,2 kb/s simultaneously? How would this be > achieved? As a last resort, I could crosswire 2 ports into a single > serial-port connector, but how is it done using only the one port? It isn't. The 8250 has a single baudrate generator, and doesn't support an external clock in the configuration normally used in PCs. You either need a card with a UART that handles split speeds (eg. ESCC), or as you suggested use two ports. > Adam David <adam@veda.is> -- ]] Mike Smith, Software Engineer msmith@gsoft.com.au [[ ]] Genesis Software genesis@gsoft.com.au [[ ]] High-speed data acquisition and (GSM mobile) 0411-222-496 [[ ]] realtime instrument control. (ph) +61-8-8267-3493 [[ ]] Unix hardware collector. "Where are your PEZ?" The Tick [[
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