From owner-freebsd-multimedia@FreeBSD.ORG  Thu Feb 24 19:17:49 2011
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From: Hans Petter Selasky <hselasky@c2i.net>
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Subject: Re: idea: "shim" driver for Roland / Edirol SD-20 MIDI sound module?
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On Thursday 24 February 2011 19:46:02 Torfinn Ingolfsen wrote:
> On Thu, 24 Feb 2011 08:47:15 +0100
> 
> Hans Petter Selasky <hselasky@c2i.net> wrote:
> > > crw-r--r--  1 root  operator    0, 109 Feb 23 21:53 /dev/umidi0.0
> > 
> > Could you do a simple loopback test:
> > 
> > dd if=/dev/umidi0.0 of=/dev/null bs=1
> > 
> > And see if you get any bytes when you press keys?
> 
> Press keys on what? A MIDI keyboard, or the normal (computer) keyboard?

You can redirect from a MIDI keyboard to the synth using dd, on the 0'th 
entry.

--HPS