Viewing Issue Advanced Details
ID Category [?] Severity [?] Reproducibility Date Submitted Last Update
03062 Core Major Always Mar 22, 2009, 17:18 22 days ago
Tester AndersH View Status Public Platform MAME (Official Binary)
Assigned To Resolution Open OS
Status [?] Confirmed Driver
Version 0.130 Fixed in Version Build
Summary 03062: -throttle forgotten with high -frameskip
Description Use the -throttle option (default), press F11 to display performance ratio, select frameskip with F8/F9 keys, some games run at well above 100% (unthrottled?) at high frameskips. I checked only 3 examples:

- 1943: always limited to 100%, OK
- invaders: limited to 100% at frameskip 0-9, too fast at frameskip 10
- tapper: limited to 100% at frameskip 0-8, too fast at frameskip 9-10
Steps To Reproduce The description is clear on this
Additional Information
Flags
Regression Version 0.113u2
Affected Sets / Systems
Attached Files
 
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There are no relationsihp linked to this issue.
Notes
5
User avatar
No.04031
Tafoid
Administrator
Mar 22, 2009, 22:44
Using TAPPER as an example, I was able to reproduce this behavior. As soon as I hit 9, the emulation acts as if it's unthrottled.
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No.04048
Fujix
Administrator
Mar 23, 2009, 12:24
Yes, I confirmed this! Great.
User avatar
No.04067
Tafoid
Administrator
Mar 25, 2009, 16:37
Went back and found a regression version: 0.113u2
Not too sure on the cause.. The only tidbit I see in the whatsnew that might directly effect this game:
Changed throttling behavior to only throttle on non-skipped frames.
This should give a little better performance on games where
frameskipping is necessary. [Aaron Giles]
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No.12559
Osso
Developer
Apr 27, 2016, 11:21
This seems related to the screen refresh rate. Games with 30 will always will go unthrottled with frameskip 9 and 10, games with 60 won't go unthrottled.
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No.14465
Kale
Developer
22 days ago
Anything that runs at < 60 Hz will sport this bug.
So Street Fighter 2 (59.63) yes, Devastators (60) no