|
Turbo (Sega 1981) Sound stutters
#296351 - 09/23/12 06:34 AM
|
|
|
Hi all, I can't seem to keep the sound from stuttering in Sega's Turbo (1981). Tried changing settings in ini file, no dice. I wasn't expecting difficulty running such an old game! Any suggestions would be appreciated!
|
|
|
Stiletto |
|
They're always after me Lucky ROMS!
|
|
|
|
|
|
Reged: 03/07/04
|
|
Posts: 6472
|
|
|
|
|
|
Send PM
|
|
|
Re: Turbo (Sega 1981) Sound stutters
[Re: RPOR6V]
#296355 - 09/23/12 08:13 AM
|
|
|
> I wasn't expecting difficulty running such an old game! Any suggestions would be appreciated!
It is indeed possible your computer is not fast enough. Back in the early days of MAME Turbo's emulation would only have made use of audio samples for the audio (effective WAV file playback) but later on it started making use of MAME's discrete/analog audio simulation system (because that is what the audio really IS, in Turbo) sometime around MAME 0.83 or around 8 years ago.
Eventually, the sample support will be removed and it will be completely discrete audio simulation-driven. (which will probably make it run even slower, but it will be better documented and "more accurate" and such is life if you've followed MAME for a while)
Unfortunately I do not have a benchmark in front of me indicating what performance computer is required for 60fps playback. (although here in MAME 0.137 Bryan Ischo shows a Intel Atom 330 (Dual-Core, 1.6 Ghz) w/ 2 GB running it at only approx. 75% speed, not 100% speed: http://www.ischo.com/mamebench/ - even with a 20% overclock to 1.9 GHz it only got to 91% speed - and this is with audio/video output disabled. Also MAME 0.137 was 2.5 years ago now so the goal posts have moved...)
Can't say why but my gut instinct is telling me you may be trying to run it on similarly speedy old-school hardware. Perhaps a little faster, perhaps not.
One way to see what's going on is to display the FPS meter on screen.
http://mamedev.org/devwiki/index.php/FAQ:Performance#There_are_occasional_speed_problems.
Reading this may answer even more questions.
http://mamedev.org/devwiki/index.php/FAQ:Performance
-----------------
An additional cause of stuttering can be the game's refresh rate, which is actually 59.090908 Hz in this case (I believe) (not 60 Hz). Using some sort of synchronization of video can cause stuttering in this case, but I forget the details. If it turns out that my gut instinct is wrong and FPS remains fast enough and never dips, then you have a MAME configuration issue.
- Stiletto
Edited by Stiletto (09/23/12 08:48 AM)
|
|
|
|
Re: Turbo (Sega 1981) Sound stutters
[Re: Stiletto]
#296388 - 09/23/12 09:28 PM
|
|
|
Thanks for the reply, a lot of what you said was over my head but I think I understand the basics from the perspective of samples versus emulation. A bit disappointed but I'll file this game with Pong and Stunt Cycle in the wish list category.
|
|
|
|
Re: Turbo (Sega 1981) Sound stutters
[Re: RPOR6V]
#296390 - 09/23/12 09:50 PM
|
|
|
|
|
| Stiletto |
|
They're always after me Lucky ROMS!
|
|
|
|
|
|
Reged: 03/07/04
|
|
Posts: 6472
|
|
|
|
|
|
Send PM
|
|
|
Re: Turbo (Sega 1981) Sound stutters
[Re: RPOR6V]
#296424 - 09/24/12 03:27 PM
|
|
|
> Thanks for the reply, a lot of what you said was over my head but I think I
> understand the basics from the perspective of samples versus emulation. A bit
> disappointed but I'll file this game with Pong and Stunt Cycle in the wish list
> category.
Right, there's no need for that - what krick said. This game will play FINE if you give it enough CPU and other performance tweaks. I just need to rule out that you're not throwing a 1.0 GHz Pentium III running Win2K at it, or trying to run an "illegal" hack build on a Wii or something silly like that. (Some people get used to the idea of "hey, these are old games, I'll just emulate them using my oldest computer" and people need to break out of that thinking for games like this.)
So what's your computer specs, and can you press F11 while MAME is running Turbo to bring up the FPS meter and see if it dips when the sound stutters and if you're even getting full speed? 
- Stiletto
|
|
|
| AWJ |
|
|
|
|
|
|
|
Reged: 03/08/05
|
|
Posts: 936
|
|
Loc: Ottawa, Ontario
|
|
|
|
Send PM
|
|
|
Re: Turbo (Sega 1981) Sound stutters
[Re: RPOR6V]
#296453 - 09/24/12 10:41 PM
|
|
|
turbo.c had extremely poor performance from MAME 0.144u7 to 0.146 (MAME Testers). If you're running a MAME version in that range, upgrade to the latest 0.147.
|
|
|
| Stiletto |
|
They're always after me Lucky ROMS!
|
|
|
|
|
|
Reged: 03/07/04
|
|
Posts: 6472
|
|
|
|
|
|
Send PM
|
|
|
Re: Turbo (Sega 1981) Sound stutters
[Re: AWJ]
#296475 - 09/25/12 12:41 AM
|
|
|
> turbo.c had extremely poor performance from MAME 0.144u7 to 0.146 (MAME Testers). If
> you're running a MAME version in that range, upgrade to the latest 0.147.
Oh man, I'd even read that bug entry and didn't think of it.
Original Poster, try this first.
- Stiletto
|
|
|
|
Re: Turbo (Sega 1981) Sound stutters
[Re: krick]
#296692 - 09/28/12 03:15 AM
|
|
|
Windows XP, running on an old Pentium 4, 2.67 GHz, 1.5 GB of RAM.
|
|
|
| Stiletto |
|
They're always after me Lucky ROMS!
|
|
|
|
|
|
Reged: 03/07/04
|
|
Posts: 6472
|
|
|
|
|
|
Send PM
|
|
|
Re: Turbo (Sega 1981) Sound stutters
[Re: RPOR6V]
#296696 - 09/28/12 06:18 AM
|
|
|
> Windows XP, running on an old Pentium 4, 2.67 GHz, 1.5 GB of RAM.
That should be enough I think.
Does the problem go away with MAME 0.147?
- Stiletto
|
|
|
| NickAA |
|
MAME Fan from the beginning
|
|
|
|
|
|
Reged: 02/28/10
|
|
Posts: 13
|
|
Loc: South Texas
|
|
|
|
Send PM
|
|
|
Re: Turbo (Sega 1981) Sound stutters
[Re: Stiletto]
#297085 - 10/05/12 09:08 PM
|
|
|
I have the same cpu speed & memory in my pc and this game runs fine w/no stutters. Do any other games stutter?
|
|
|
| Stiletto |
|
They're always after me Lucky ROMS!
|
|
|
|
|
|
Reged: 03/07/04
|
|
Posts: 6472
|
|
|
|
|
|
Send PM
|
|
|
Re: Turbo (Sega 1981) Sound stutters
[Re: NickAA]
#297086 - 10/05/12 09:18 PM
|
|
|
> I have the same cpu speed & memory in my pc and this game runs fine w/no stutters. Do
> any other games stutter?
Then we've narrowed it down to MAME version, like mentioned above.
- Stiletto
|
|
|
Previous 
Index 
Next 
Threaded 
Turbo (Sega 1981) Sound stutters
Reply
[Re: 
