At Thu, 13 Feb 2003 16:05:00 +0100,
Martijn Sipkema wrote:
>
> > recently a technical information about emagic unitor8 was revealed,
>
> I suppose this doesn't mention AMT? Can I have this information. It
> might contain more than what I already have.
the info appeared in another thread (running-status bug on mtpav):
http://www.math.tu-berlin.de/~sbartels/unitor/unitor8_doc.txt
the project itself seems dead now...
> > and it includes a small desription about MTP, too.
> > there, the initialization sysex is mentionted, so perhaps this may
> > influence on the behavior of the device. (also, the smpte sysex is
> > described!)
>
> I think both devices act as a single MIDI device where the 0xf5 message
> that is undefined in the MIDI spec is used for cable selection. Thus the
> running status is for the MIDI stream and not per cable. I don't think
> these devices use running status on transmitting (to the host at least)
> themselves.
yes, this bug was discussed in another thread.
>
> > before i start coding, i would like to ask you summarize the existing
> > problems of mtpav driver (which most likely i forgot :)
> >
> > i hope this time the bugs can be fixed, or at least improved...
>
> Is it possible to open files from the kernel? I'd suggest having support
> for devices like the Unitor in user-space to be able to support them on
> any serial port if this is not the case.
generally i agree that a user-space driver would be flexible for
serial devices.
but there is already a working mtpav driver and if only a small amount
of changes would be needed, why not?
the support of usb would be a different thing...
Takashi
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