[Csnd] Re: [Cs-dev] Csound 6.03 Windows installer built for Pentium 4 or later
| Date | 2014-07-24 23:08 |
| From | "Art Hunkins" |
| Subject | [Csnd] Re: [Cs-dev] Csound 6.03 Windows installer built for Pentium 4 or later |
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Let my supplement Michael's announcement with
my experience of Csound6 installer builds, on Windows XP and Windows 7
machines - the latter with Pentium 4 processor. Please note that my tests
largely relate to *realtime* usage, not delayed playback.
Windows 7: Michael's supplemental installer that
includes Pentium 4 compatibility works flawlessly on this CPU. Earlier Csound6
builds generated a crash with an "Illegal instruction" error on Pentium 4. I can
only assume that on more recent CPU's, his previous Csound6 builds
also ran without problems on Windows 7 machines - e.g., that this was
specifically "a Pentium 4 problem".
Windows XP: Csound6 installers *prior to 6.02*
worked fine for delayed playback, but not at all in realtime mode (-odac). They
apparently lacked a PortAudio module (or any other realtime audio capability).
Beginning wiith 6.02, PortAudio was implemented, and worked fine *as long as
MIDI (PortMidi) was not required*. If it *was*, no audio - hang.
Since my previous tests all had involved MIDI and
realtime audio, I had erroneously thought Csound6 was incompatible with
Windows XP. (I had not tested delayed playback at the time.) What I only
recently (and by chance) discovered was that realtime MIDI was possible on
XP with Csound6 *as long as -+rtmidi=winmm or -+rtmidi=mme is specified*. (Just
*not* the PortMidi driver.)
Unfortunately, (-+rtmidi=)PortMidi is the default -
so it is easy to conclude that Csound6 realtime MIDI doesn't work on XP. For
some reason, thisissue does not arise with Windows 7.
It would be nice, on behalf of Windows XP users,
if one of our intrepid developers could take a look at this
conundrum.
Meanwhile, many personal thanks to Michael for
welcoming the Pentium 4 CPU back into the Csound6 family.
Art Hunkins
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