As is often the case with Csound, there is more than one way to do this.

The simplest, standard way is to use the --midifile (or -F)
command-line option. There are other methods, involving reading the
MIDI file into the CsoundAC.Score object.

You may wish to use the MIDI inter-operability (--midi-key,
--midi-velocity) options, relatively new in Csound, so that you can
write the same instrument definitions for both MIDI and standard
Csound score use. The examples/CsoundAC.csd orchestra instruments are
written in this way, you can use them or use them as examples.

Hope this helps,
Mike

On Wed, Jul 7, 2010 at 10:08 AM, Marcel de Velde  wrote:
> Hello list,
>
> I'm new to CSound, and wish to use it for precision rendering of
> microtonally retuned classical music.
> I read somewhere that CSound can take as it's input a MIDI file, but I can't
> find out how to do this.
>
> My MIDI files are multi channel, all channels are monophonic and microtuning
> is done by pitch bend messages per channel.
> I figure I'll have to write some custom code to get the instrument to
> respond to the pitch bend messages, but once I can get CSound to play a MIDI
> file I'll be well on my way.
>
> Many thanks for any help!
>
> Kind regards,
> Marcel