game just speeds up for no reason can it be 2 buttons pressed simulataneously?

[signdude]

hello all,

for some reason some of my roms will just speed up to about twice as fast as normal speed.  (double dragons, nba jam, and nba hangtime and probably more) it goes back to regular speed eventually after pressing every button on the panel repeatedly. it would have to be a button sticking somewhere wouldnt it? but  i cant seem to figure out which one or button combination. has anyone ever experienced this? thanks for any advice on this...

[Titchgamer]

Cant remember what they are but there are speed increase/decrease buttons in mame.

[ark_ader]

Ah so that's what turbo means.

[yamatetsu]

F10 speeds the game up to maximum speed, pressing f10 again sends it back to normal speed. Handy for skipping intros.

[signdude]

thanks everyone for all your help on this.... i would have never figured it out without your tips.
i ended up having to disable the frameskip and throttle inputs in mame. now it works like a charm....
thanks to all....