midi problems on LinuxPPC 2000 and PD

[Jason Freeman]

I've been running pd on LinuxPPC 1999 and 2000 without a hitch, using the
"frags" option when starting pd.

If you're using LinuxPPC 1999, there may be some sound updates you need to
download for enlightenment and gnome. Check the list archives at
http://lists.linuxppc.org or ftp.linuxppc.org for info on the exact files.

If pd (or some other application) recognizes the sound drivers OK but you
just get static, then it's an endian issue. There's a line of code in a file
which I believe is called s_linux.c (I'm booted into MacOS right now so I
can't check the exact name) which sets the format to SB16_LE. If you change
that to SB16_BE then that should fix your endianess problems.

I've never had any luck with LinuxPPC getting MIDI or sound input to work on
the Mac. So, to get around the problem, I bought a cheap ($30) Ensoniq
AudioPCI Soundblaster card and installed the latest ALSA drivers. Under that
setup, MIDI and full-duplex audio work great, though the sound quality
leaves a little bit to be desired. I imagine higher end audio cards (and
maybe even a few that support MacOS as well) might be supported by ALSA
under LinuxPPC, but I haven't checked any out.

Good luck, and let me know if you have any more questions.

--Jason

on 5/25/00 11:52 PM, Michal Seta wrote:

> On Thu, 25 May 2000, Ricardo Climent wrote:
> 
> |
> |just wondering how could I get midi to work.
> 
> I don't think anyone yet tackled MIDI on PowerPC Linux.  I don't think
> there are any drivers (and OSS does not support it AFAIC).  There are
> issues with the speed of the serial port on a mac so it's a matter of
> hacking up something, I guess, but what do I know....
> 
> However,  I'm running LinuxPPC1999 and Guenter's version did not function
> (I posted a while ago about the problem with gui not talking with the
> rest...).  However, I tried today Miller's version and it behaves nicely
> but no audio...  ioctl reports a problem with OSS not being able to
> connect to device 0 ...  All my OS has is the oss kernel module.
> 
> Any ideas?
> 
> I haven't been able to run any sound app other than mp3 players....
> 
> I remember someone posted some fix of the endianess problem (changing a
> line or 2 in the sources).
> 
> I'm on a ppc 7200/120
> 
> thnx
> 
> 
> .....                            ....
> ......   Michal Seta  ......
> .....                            ....
> 
> 
> 
>