On Fri, Sep 21, 2007 at 03:54:21AM +0000, Jacob Meuser wrote:
> On Thu, Sep 20, 2007 at 07:33:39PM -0700, Ryan Freeman wrote:
> > On Fri, Sep 21, 2007 at 01:29:37AM +0000, Jacob Meuser wrote:
>
> > >
> > > hmmm, "Street Fighter II" is working nicely for me with a default
> > > install of zsnes. CPU is 1.84 GHz Athlon, soundcard is SoundBlaster
> > > Live!.
> > >
> > > there is some strangeness in the zsnes audio code. it intentionally
> > > uses a different audio buffer size than SDL reports. why, I don't
> > > know. this could potentially be a problem with certain hardware.
> > >
> > > I also see zsnes using almost all available CPU.
> > >
> > > what CPU and soundcard are you using?
> > >
> >
> > i kinda figured it would be more related to zsnes code than openbsd, since
> > it
> > is the only offending application, but as i am no programmer i am of little
> > use
> > when it comes to investigating. what I can provide is my soundcard:
> >
> > auich0 at pci0 dev 31 function 5 "Intel 82801CA/CAM AC97" rev 0x02: irq 11,
> > ICH3 AC97
> > audio0 at auich0
> > auich0: measured ac97 link rate at 47999 Hz, will use 48000 Hz
>
> one piece of information missing here, the AC97 codec.
>
here tis:
ac97: codec id 0x43525936 (Cirrus Logic CS4299 rev 6)
ac97: codec features headphone, 20 bit DAC, 18 bit ADC, Crystal Semi 3D
> > and my cpu:
> >
> > cpu0: Intel(R) Pentium(R) III Mobile CPU 1133MHz ("GenuineIntel" 686-class)
> > 1.14 GHz
> > cpu0:
> > FPU,V86,DE,PSE,TSC,MSR,PAE,MCE,CX8,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,MMX,FXSR,SSE
>
> probably fast enough to rule out resource problems.
my previous thinkpad was a 600x, which had a 500mhz cpu and i was able to play
zsnes fine there with sound as well (i think i may have had it turnedd down
to 22050hz, though) yeah frameskip may have been used but sound worked quite
well.
>
> have you tried zsnes both with and without the -se option ? does it
> make any difference? it seems at least part of the buffer size scaling
> has to do with this option.
>
I just checked this out. it seems (still running 1.42 in this instance) that
the -se option is enabled by default. checking the sound option page there
was only an option to disable SPC emulation (is this different than the
command-line option?) i tried both ways, with disable spc the sound was a bit
better, but still 'staticy' and it seems to get worse/better in consistent
waves.
-ryan
