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Centipede and MAME .143
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boardjunkie:
3x buffer is on. I forget the rest of the settings. I'll have a look later and post them.
Calamity:
Possibly you're using -multithreading too. I've seen severe input lag before with those settings and a mouse as input (similar to a trackball), specially with vertical games (+256 lines).

If you have the time, download a recent version of GroovyMAME and test it with the same game, enable these options: -triplebuffer, -multithreading. (The implementation of -triplebuffer in GroovyMAME eliminates that specific case of input lag.)
dzorbas:
Calamity,

I've spent some time poking around in the GroovyMAME subforum to try to get a better understanding of what I need to do to set it up. I downloaded the 32bit Windows version of GroovyMAME and put it in it's own folder. I created a new mame.ini file using the -cc switch. I have set up my ROM path to point to a folder with only Centipede in it and have set triplebuffer to 1.0, multithreading to 1 and syncrefresh to 1.

When I run GroovyMAME from the command line the lag is mostly gone. There is definitely some still there and you notice it most when you are scrambling around trying to shoot all the individual pieces that have made it down to the bottom of the screen!  ;D Should I try tweaking any other settings?

Also, one of the side effects is that my graphics look horrible running this from the command line. I have a Radeon 7000 graphics card with a 21-inch computer LCD attached to it. When I run MAME normally using MALA as the FE the graphics look fine even though some vertical games are stretched. I haven't installed any of the custom video drivers or anything like that. I'm less interested in authenticity and more interested in playability. I'd like to keep things as simple as possible.

I'd appreciate any input or guidance you could give me.

Thanks,

Dino Z.

Wade007:
I've noticed lag in Centipede as well using my MAME ver .145 and Centipede version 3 rom. Windows 7-64bit on MAMEUI64_no nag AND MAME64. Multi-threading turned off (Last time I checked). Mala frontend.

Oftentimes it will play just fine and then all of a sudden both the movement and firing get "stuck" and will almost not move or fire at all. Like the player part is in slow motion while the rest of the game is full speed. If I wait a few seconds it will "catch up" and go back to normal, but by then I've either been killed or the game is much more against me. It seems to me that there is something about the game or the emulation that is causing the controls to get backed up or something. Then it has to catch up with the movements that are banked. Odd. I'm using an X-Arcade tankstick with trackball.
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