Re: Sweet16 Slowdown..

["Michael J. Mahon" <mjmahon@aol.com>]

Drew wrote:
> On Jun 26, 10:51 am, Drew <GoggleD...@gmail.com> wrote:
>
> > On 26 June, 10:20, "Don" <numberfiveplus...@gmail.com> wrote:
> >
> >
> >
> >
> > > I don't have any first-hand knowledge of your problem, but you might want to
> > > check the Intel "Speed Step" settings.  I'm thinking that the emulators
> > > might be dependent on a fixed clock speed and a lot of the modern systems
> > > (*especially* portable systems) change the clock (and hence the instruction
> > > execution rate) dynamically to reduce power and extend battery life.
> > > There's usually a control somewhere in the OS (or the BIOS) to disable the
> > > function.
> >
> > > --
> > > be seeing you ... Don
> > > Don Melton, Sr. Consultant, Vatic Technologies Limited
> >
> > > "Drew" <GoggleD...@gmail.com> wrote in message
> >
> > > 19ffd046-3678-49dc-9fdd-33e4ea35467b@k20g2000vbp.googlegroups.com">news:19ffd046-3678-49dc-9fdd-33e4ea35467b@k20g2000vbp.googlegroups.com...
> >
> > > > Hi,
> >
> > > > I recently been getting together a Netbook to run Windows and OSX so I
> > > > can run all the emulators i need for GS (even Bernie under
> > > > SheepShaver) as well as use it for checking email/surfing :)
> >
> > > > I noticed something strange with Sweet 16 (1.7 and 2.0) that i was
> > > > wondering if anyone else had seen it and knew what possibly could be
> > > > causing it. It is noticable in games and the two that i have been
> > > > playing with recently is King's Quest II and Silpheed. It seems that
> > > > in the intros the sound and emu seem to slow down and then speed up a
> > > > number times, this is noticable more in the sound as you can hear the
> > > > gaps between notes increase and decrease. I would normally not really
> > > > care, but Sweet16 is my fav emu for modern OS and was the reason i put
> > > > OSX on my netbook (via retail OSX disc of course). KegsOSX seems fine,
> > > > Bernie even seems fine taking consideration the double emulation and
> > > > Kegs and ActiveGSApp on Windows plays fine. I booted up a friends
> > > > PowerPC G4 and also my Pismo laptop both running OSX 10.4 and saw the
> > > > same behaviour...so not something specific to my netbook (also tried
> > > > booting the games directly as well as via my HD image running GS/OS
> > > > 6.0.1).
> >
> > > > Has anyone else noticed this? and know a fix :-)
> >
> > > > Also does anyone know if you can remap the keys in Kegs for the keypad
> > > > support?
> >
> > > > Cheers
> > > > Drew
> >
> > Hi,
> >
> > Yes i tried that last night, but didn't make any difference. The fact
> > i see same problem on G3 Pismo and G4 desktop which are PowerPCs make
> > me think its not architecture related.
> >
> > Cheers
> > Andrew
>
>
> Well did some testing today and it would seem the cause is cpu related
> in the sense that Sweet16 (both 1.7 and 2) for some reason is maxing
> out the cpu. The slowdown in emu and sound is happening when the CPU
> is maxed out. Just at the bouncing apple CPU usage is betwee 80 - 95%,
> so not strange that when its actually doing some work something
> suffers lol. I see this both on a 400Mhz Psimo and 1.6Ghz Netbook.
> Strange...have passed it on to Eric Sheperd for his information.

Apple II's tend to use 100% of the CPU, because they are always either
polling or executing a program.  Maybe some emu writers detect the
keyboard polling loop and do a "wait"...

-michael

NadaNet and AppleCrate II: parallel computing for Apple II computers!
Home page: http://home.comcast.net/~mjmahon

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