05588: wcbowl (All sets): Incorrect refresh rate reported by mame.

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
05588	Speed	Major	Always	May 20, 2014, 02:11	May 20, 2014, 23:25

Tester	ozfalcon	View Status	Public	Platform	SDLMAME
Assigned To		Resolution	No change required	OS	Linux
Status [?]	Closed			Driver	itech/itech32.cpp
Version	0.153	Fixed in Version		Build	Normal
		Fixed in Git Commit		Github Pull Request #

Summary	05588: wcbowl (All sets): Incorrect refresh rate reported by mame.
Description	When running the game in syncrefresh mode with refresh set to the game speed, returned speed indicates game is running at 109% Mame reports game refresh = 60.106990 Running in syncrefresh mode with a monitor refresh of 60hz is close enough to see the problem.
Steps To Reproduce	Set your monitor refresh to ~60hz Run game in syncrefresh mode >sdlmame wcbowl -syncrefresh -nothrottle Observe that the game runs at 109%
Additional Information	Check refresh = 60hz >xrandr \|grep "" 1280x1024 60.0+ Run Mame >sdlmame wcbowl -syncrefresh -nothrottle Average speed: 109.00% (18 seconds)
Github Commit

Flags
Regression Version
Affected Sets / Systems	wcbowl (All sets)

Attached Files

No.10729 Tafoid Administrator May 20, 2014, 03:20	This is an instance where the actual refresh rate is adjusted on the fly brought about by software settings of the game itself, despite the initial hardware defaults. The initial setting does show what you posted (60.106990 Hz) and MAME cannot change it until the emulation starts. Once the game is running, check "GAME INFORMATION" in the TAB menu and notice that it shows 55.063047 hz. The 109% reflects the increase needed to bring it to 60hz (60/55.063047=1.089660003740803) There are not a lot of instances where these refresh changes happen, you need to make sure to view game information after the game has started.
No.10730 ozfalcon Tester May 20, 2014, 11:19	Thanks for the information, I'll check the game info in future to see what it's running at - Not just what Mame reports via -listxml.

No.10729

Tafoid

Administrator

May 20, 2014, 03:20

This is an instance where the actual refresh rate is adjusted on the fly brought about by software settings of the game itself, despite the initial hardware defaults. The initial setting does show what you posted (60.106990 Hz) and MAME cannot change it until the emulation starts. Once the game is running, check "GAME INFORMATION" in the TAB menu and notice that it shows 55.063047 hz. The 109% reflects the increase needed to bring it to 60hz (60/55.063047=1.089660003740803)

There are not a lot of instances where these refresh changes happen, you need to make sure to view game information after the game has started.

No.10730

ozfalcon

Tester

May 20, 2014, 11:19

Thanks for the information, I'll check the game info in future to see what it's running at - Not just what Mame reports via -listxml.