Quoted from soren:
The classic "bong" is a WPC thing. The system 11 games play a short snip of the sound track (plus operator message when so). So it is a game individual thing. And I will not rule out that some games omit this entirely.
On MA it is four notes.
An old post, soren , so maybe in the meanwhile some new insight may have appeared?
All my other System 11 play a bong. As early as Big Guns and F-14 Tomcat, through Space Station, Swords of Fury, Banzai Run towards BK2K and Rollergames. IIRC Whirlwind too.
Space Station does seem to have a slightly different tone, though -- but.
I do not hear any bong, nor do I hear four notes on Mousin' Around (maybe they tried to mimick earlier 'Bally' machines being an early example of a Bally branded machine on System 11 ???). Other owners are telling me they don't hear a 'bong' either.
As you seem to have the source code, or at least deep understanding of the 6809 assembly code, can you maybe have another look at how this works?
Maybe Jim Strompolis didn't copy all the boilerplate System11 code from the colleagues, as this was his first game?
I also wonder if one of the L1 or L2 sound ROMs on U21 (CPU board) would bring this "back"?!
As you mention MA would be playing four notes, can you reference the ROM setup you're using for this? Any YouTube vid perhaps?
Most curious + thank you a lot,