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hmm please look into this
Original comment by Darkone...@gmail.com
on 7 Sep 2010 at 2:24
can't confirm this. just tried at least Phantasy Star 2 US Rev01 with r501 and
your settings and everything is fine. no stuttering or "static".
Original comment by gora.pat...@gmail.com
on 8 Sep 2010 at 4:56
alright well ill see if maybe i can catch a video of it later on
Original comment by Darkone...@gmail.com
on 8 Sep 2010 at 7:04
at the very beginning before i got to the settings you should be able to hear it http://www.megaupload.com/?d=U7ICSVIU
Original comment by Darkone...@gmail.com
on 8 Sep 2010 at 7:31
i've been now booting up some games because i wanted to do some screenshots for
the Game Select menu and this bug appears for me as well now. i guess its game
unspecific. the sound just gets broken and sounds totally scratchy. turning
on/off Sound Filtering works for me either, instead turning on/off HQ Sound.
But i have to reboot the game.
Original comment by gora.pat...@gmail.com
on 10 Sep 2010 at 7:26
I noticed this, yes but it's quite hard to have it reproduced, seems to happen
randomly after loading many games. And it's not game related, it seems to be a
bug from the recent changes I made to get ride of sound skipping issues in
interlaced modes.
This is enforced by the fact it disappears when resetting audio (which occurs
when you hard reset a game, change region or audio or video settings...).
I'd need to know if it ever happens when HQ FM is disabled and if Render mode
(original vs interlaced) has any influence on that.
Original comment by ekeeke31@gmail.com
on 11 Sep 2010 at 6:17
Sound Settings:
_______________
V V
High-Quilty Fm:on
Fm-rolloff:99.50%
Fm Resolution:Max
Fm Volume:1.00
Psg Volume:1.50
Psg Noise Boost:on
Filtering:on
Low Pass Rate:50%
Video Settings:
_______________
V V
Display:original
Tv Mode: 60 Hz
Gx Bilinear:off
VI Trap:on
VI Gamma:1.0
Ntsc:off
Borders:V-Only
Aspect:Original(4:3)
Position:+05,-5
System Settings:
_______________
V V
Console Region:Usa
System Lockups:on
68K:on
Tmss:on
Lock-on:off
Swap:off
same results still occurring
Original comment by Darkone...@gmail.com
on 12 Sep 2010 at 1:11
oh and hq was on the same steps to fix it work,i tried with it off and it still
occurs i think
Original comment by Darkone...@gmail.com
on 12 Sep 2010 at 2:45
Would also be useful if you could figure on which revision it started happening.
Original comment by ekeeke31@gmail.com
on 13 Sep 2010 at 10:33
R501
Original comment by Darkone...@gmail.com
on 13 Sep 2010 at 2:56
it may have started on earlier revs but i dont know for sure,the most recent
rev i have used is the r501
Original comment by Darkone...@gmail.com
on 13 Sep 2010 at 2:59
it didnt happen with the revision with the fixed audio crackling in 60Hz
interlaced/progressive mode in the topic i started. i didnt use any other
revisions between that one and r501.
Original comment by gora.pat...@gmail.com
on 13 Sep 2010 at 3:56
someone should test r493 then r494, I personally can verify myself at the time
being.
Original comment by ekeeke31@gmail.com
on 13 Sep 2010 at 5:02
I figured the issue, it is caused by corrupted FM table on initialization,
which is itself caused by the pow() function implemntation in devkitPPC newlib
sometimes returning incorrect results.
I should be fixing this by using a precalculated static table since the values
are constant but this is still quite annoying we can't rely on mathematic
functions integrity :-/
Original comment by ekeeke31@gmail.com
on 15 Sep 2010 at 9:51
So fixing it in genplus-gx is realy just a workaround then :P
I don't know, but maybe it isn't that much more work to fix in newlib svn and
commit a patch :P
Just so you won't run into this error again.
Original comment by svi...@gmail.com
on 16 Sep 2010 at 2:44
Exactly, also the pow() function is used elsewhere in the code.
Original comment by ekeeke31@gmail.com
on 16 Sep 2010 at 6:27
Should now be fixed in r502.
Workaround was to disable interrupts when executing the initialisation code
that calls pow()function in a loop, thanks to shagkur for the idea.
Original comment by ekeeke31@gmail.com
on 16 Sep 2010 at 11:39
Original comment by ekeeke31@gmail.com
on 16 Sep 2010 at 11:40
Original comment by ekeeke31@gmail.com
on 25 Sep 2010 at 5:13
Original issue reported on code.google.com by
Darkone...@gmail.com
on 29 Aug 2010 at 8:49