[uae] Re: uae Digest V5 #83

From: Manuel Alfayate <gaula88@xxxxxxxxxxx>
To: <uae@xxxxxxxxxxxxx>
Date: Tue, 16 Dec 2008 09:40:58 +0000
Hello there!
 
I am using the last public version of E-UAE for MAC OSX, running on both 
10.4.11(PPC) and 10.5.x(Intel) machines, and I am having some serious trouble 
here: I am also using OpenGL accelerated graphics, cycle-exact emulation, 
v-sync on, perfect sound settings...but I can't get perfect sound & video at 
the same time!-If I set a refresh rate of 50HZ, I DO get perfect scroll in 
demos/games, smooth as silk, but sound has gasps that can't be fixed by 
increasing the sound buffer. I think it's because 50Hz is not enough to fill in 
every "sound frame", so to say, and the sound chips needs a veery little higher 
refresh rate.-If I seg a refresh rate of 50.169Hz, I get perfect sound, with no 
gasps at all (sound emulation in e-uae is truly awesome), but video seems to 
skip ocassional frames, once every few seconds. I think PAL refresh rates 
expected by the chipset is no 50HZ, but a bit higher. I've tried A LOT of 
values between 50.0Hz and 50.169Hz, with no luck: some of the values give gasps 
in sound, and other give skippy framerate, some steps away from the perfect 
smooth graphics of the real Amiga.Of course, those problems are for chipset 
games/demos: no complains about Picasso96 desktop system.With NTSC chipset 
emulation, and refresh rates of 60-60.3Hz, I have the same issues: lower values 
tend to give me smooth graphics and sound gasps, while higher ones give perfect 
sound and ocassional frameskip.Can you give me some advice here, pleae? I know 
you guys know you amigas very well and must know what video modes can be set 
and used in e-uae for perfect sound/graphics sync, if it can be done at all (I 
have my doubts).PD: I can set any custom video mode with SwitchResX, a Mac OSX 
tool. FrameSkippping is off in e-uae, etc...Configuration generated with the 
latest HI-TORO, and verified by myself.The "native" resolution of 
720x576@50-60Hz seems to work in my monitor, with the problems I mentioned. Of 
course; I've tried disabling cycle-exact emulation, etc... It's a refresh rate 
related problem.I need help from a person with good visual perception and 
knowledge about screen modes/refresh rates. 
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[uae] Re: uae Digest V5 #83

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