03488: nebulray, gslgr94u, vshoot: Music speed is fast.

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
03488	Sound	Minor	Always	Oct 26, 2009, 23:11	Nov 13, 2016, 14:36

Tester	Fujix	View Status	Public	Platform
Assigned To		Resolution	Fixed	OS
Status [?]	Resolved			Driver	namco/namconb1.cpp
Version	0.134u4	Fixed in Version	0.177	Build
		Fixed in Git Commit		Github Pull Request #

Summary	03488: nebulray, gslgr94u, vshoot: Music speed is fast.
Description	All music speed is faster than normal.
Steps To Reproduce
Additional Information	Tafoid and Phil B helped to find out the regression version and the cause. Fixed by superctr in 0.177.
Github Commit

Flags
Regression Version	0.133u5
Affected Sets / Systems	nebulray, gslgr94u, vshoot

Attached Files

No.05070 Phil Bennett Developer Oct 27, 2009, 18:27	Removing the MCU comms hack in the driver brings most of the games back to their correct tempo (which resolves 02265). The hack was necessary prior to RB's recent M37710 hack or else there'd be no sound at all. Note that Nebulas Ray, the Great Sluggers games and V-Shoot are still playing a bit too fast.
No.05098 Fujix Administrator Nov 1, 2009, 08:00	Thanks Phil, updated the report.
No.10936 Phil Bennett Developer Aug 18, 2014, 08:14	The problem here is that the counter stop function of the M37710's timers is not implemented. When timer A1 (120Hz) expires, it triggers an interrupt during which the timer is stopped. External INT0 (VBlank?) restarts the timer. External INT2 looks like a development leftover; it is dependent on Timer A4, which is never started.
No.10937 AWJ Developer Aug 19, 2014, 04:03	The ADC interrupt should also be internal to the M37710 and not depend on the drivers to trigger it...
No.13363 Fujix Administrator Nov 13, 2016, 14:36 edited on: Nov 15, 2016, 07:29	Fixed by superctr in 0.177.