08714: changela: Impossible to drive fast

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
08714	Gameplay	Major	Always	Jul 9, 2023, 02:37	Jul 11, 2023, 10:11

Tester	Balthier	View Status	Public	Platform	MAME (Official Binary)
Assigned To	hap	Resolution	Fixed	OS	Windows 10/11 (64-bit)
Status [?]	Resolved			Driver	taito/changela.cpp
Version	0.256	Fixed in Version	0.257	Build	64-bit
		Fixed in Git Commit	da2695a	Github Pull Request #

Summary	08714: changela: Impossible to drive fast
Description	It is impossible to make the car go faster than the slowest speed. The manual shows 3 speeds that can be attained (page 11 https://www.arcade-museum.com/manuals-videogames/C/ChangeLanes.pdf ): 0001 Low 0200 Med 0310 High I got the pedal to the metal and the speed meter barely moves up more than if I didn't have it pressed. It also makes it impossible to get better ranks for bonuses like "Ace" or "Great" when arriving at checkpoints. The issue is also compounded by the fact that there is no way of getting to the service screen to see if the pedals are even working as they should due to another long standing bug https://mametesters.org/view.php?id=2005 For some reason Free Game/Self Test are mapped to a single button in the inputs, and the manual shows that as a movable switch with 3 positions. Pressing the button adds a free credit but um yeah how to access the service mode?
Steps To Reproduce	1. Play the game and hold the accelerator down the whole time and don't hit anything that would hamper your speed.
Additional Information	I put up a pic of the controls while the pedal was pressed and paused the game. Also one showing the attract mode going full speed.
Github Commit

Flags
Regression Version
Affected Sets / Systems	changela

Attached Files	changela_i_cant_drive_55.png (140,476 bytes) Jul 9, 2023, 02:37 Uploaded by Balthier
Attached Files	changela_but_the_game_can.png (81,214 bytes) Jul 9, 2023, 02:37 Uploaded by Balthier

No.21634 hap Developer Jul 9, 2023, 15:20	Gas pedal value is now correctly: 0001 Low 0200 Med 0310 High I also fixed test mode so inputs can be verified there (press F2 to advance to next test)
No.21641 Balthier Tester Jul 10, 2023, 18:43	Change Lanes is fully working properly now? Brilliant hap :D Thanks again.
No.21647 hap Developer Jul 11, 2023, 10:11	Looks like it was an old regression: https://github.com/mamedev/mame/commit/faf947ed17932b8c1e9cacdb36117691b0af23cf https://github.com/mamedev/mame/commit/efaac9818f3f4511f7ad5201fcfe3bbd22c007a4 That commit changed IP_ACTIVE_LOW, IPT_UNUSED to IP_ACTIVE_HIGH, IPT_UNUSED when steering wheel is enabled.