[PD] PD 0.33 test 6 works with alsa 0.9B3 but not 0.9B4

[Winfried Ritsch]

Hello,

 > 
 > I've just been entertaining myself with trying to get Pd to run with Alsa
 > 0.9Beta 4.  I had to upgrade to RedHat 7.1 because 0.9Beta4 seems not to work
 > with 2.2 kernels.  And now I find that Pd 0.33test6 (the latest) doesn't work
 > at all with Alsa except in OSS emulation.  OSS emulation seems to work OK
 > at least.
 > 
 > If any of you have tried test versions of Pd 0.33 with Alsa 0.9B4 and founf
 > out how to get it to work I'd sure like to know how you do it.  In the
 > meantime I'll continue trying to find out what my problems are.
 > 

If got PD to work with ALSA 0.9Beta4 and 2.4.5 (but not 2.4.4 some
socket open troubles)  and the snd-card-rme96 (RME96/8 PST) Soundcard
and MIDI with PCI128 (snd-card-ens1370) and snd-seq-oss. But I failed
with rme9652, since all the anounced features (which are actually
drawbacks in performance) like dev "plug:x,x", "share:x,x" or
"multi:x,x" I cant get to work, even hacking on pd code (doing my own
testing programm). 

I got it to work with the onboard CMIPCI-Card, but using MIDI of this
Card frezzes the computer, so I think some of the drivers have MIDI
broken and I worked a little better (only MIDI-out) if I turn the
APIC (and IO-APIC)-feature in kernel Config on (not SMP).

Also the philosophy in ALSA is that using "mmap -interface" feature
turns out that you have to use a mmap-pointer update routine which in
facts makes a copy of sounddata to the real mmap-memory, which in fact
undermines the idea of mmap and doing the data-conversion (flot to
int32) ourselves. So there I see no point to use mmap in ALSA, since it
does the same: coping sound-data to the device ;-(. So I think best is
using Guenthers driver for Hammerfall (which also provides an stereo
device for eg. snd Soundeditor and so on).


mfg winfried