01675: robocop2, robocop2j, robocop2u: [possible] Music looping incorrectly

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
01675	Sound	Minor	Always	Apr 5, 2008, 07:28	Mar 10, 2022, 00:50

Tester	Foxhack	View Status	Public	Platform	MAME (Official Binary)
Assigned To		Resolution	Reopened	OS
Status [?]	Confirmed			Driver	dataeast/cninja.cpp
Version	0.124a	Fixed in Version		Build	Normal
		Fixed in Git Commit		Github Pull Request #

Summary	01675: robocop2, robocop2j, robocop2u: [possible] Music looping incorrectly
Description	When you play the game, the background music seems to loop a second or two too early; it sounds the same as if it were an old vinyl record skipping. This apparently incorrect looping / skipping also happens in RBelmont's M1 music player. I remember that the music looped perfectly when I played the game on a real machine ages ago, but my memory is hazy so it would be best if someone could verify the bug against real hardware.
Steps To Reproduce	Start a game, play the first level.
Additional Information
Github Commit

Flags	Possible
Regression Version
Affected Sets / Systems	robocop2, robocop2j, robocop2u

Attached Files

No.13212 zaxxon Tester Sep 28, 2016, 23:58	if useful here is a pcb recording:
No.19881 danylopez123 Tester Mar 10, 2022, 00:50 edited on: Mar 10, 2022, 00:52	Seeing from that PCB recording video, it seems the music would also speed up if alot of sounds are played at once, although, the effect is not stronger. Also, the music for the Levels 1 and 2 are segmented with samples but they are also timed, when alot of sounds are played, the timers are reduced causing the music to skip ahead. One clear example are at the parts where you finish the level and it begins to add the bonus time sound. Another one it's at 9:19 during the cutscene with the Truck and Robocop.

No.13212

zaxxon

Tester

Sep 28, 2016, 23:58

if useful here is a pcb recording:

No.19881

danylopez123

Tester

Mar 10, 2022, 00:50

edited on: Mar 10, 2022, 00:52

Seeing from that PCB recording video, it seems the music would also speed up if alot of sounds are played at once, although, the effect is not stronger.
Also, the music for the Levels 1 and 2 are segmented with samples but they are also timed, when alot of sounds are played, the timers are reduced causing the music to skip ahead.

One clear example are at the parts where you finish the level and it begins to add the bonus time sound.
Another one it's at 9:19 during the cutscene with the Truck and Robocop.