[LAU] Mackie C4 & ESI RoMI/O II

Clemens Ladisch clemens at ladisch.de
Tue May 18 07:51:47 UTC 2010


Andre Majorel wrote:
> > Andre Majorel wrote:
> > > $ find /dev/ -iname "*midi*"
> > > /dev/dmmidi1
> > > /dev/midi1
> > > /dev/snd/midiC1D0
> 
> Now why are there 6 files ? What are they for ?

/dev/snd/midiC1D0 is the ALSA node for card 0, device 0.
/dev/midi1 is the OSS node for compatibility with old applications.
/dev/dmmidi1 is the same as /dev/midi1.
The .udev files are for internal bookkeeping of the udev daemon.

> Why don't any of them seem to deal with the second interface ?

The ports are multiplexed through one device file as subdevices because
there is a limit of four MIDI devices per card in some circumstances.


Regards,
Clemens


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