MAMEWorld Forums - EmuChat - Re: nothrottle and ddraw

> i use normal mame from mamedev
> i don't use mame.ini, i pass options via the command line
> i use "mame gamename -nothrottle -syncrefresh"
> this way i get smooth scrolling, no tearing etc, game is ruuning close to the real
> speed depending of the refreshrate of the original game
> but if i use -vidoe ddraw option then the game(s) are running as fast as it can
> i'm not complaining or anything i'm just curious why with the default d3d i get
> normal playing speeds but with ddraw mame it runs as fast as it can
> p.s. thx mameteam for syncrefresh and nothrottle. they should be avaible in every
> emulator.

Using nothrottle and syncrefresh at the same time causes the frame rate to match your refresh rate, provided your CPU can run the game at that speed of course.
I think the reason for the difference between the two is that with D3D you are capped at 60Hz but with ddraw you're not. dxdiag used to have a troubleshooting tab where you could override the D3D refresh rate, but that's gone since Windows Vista. It's also possible that your video card driver is doing this.

/EDIT

What OS are you running and what video card do you have? I cannot replicate what you are describing, -nothrottle and -syncrefresh at the same time causes everything to run insanely fast with both the ddraw and D3D renderer. I'm on 64-bit Windows 7 with a Geforce GTX 460.

S