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Can you turn a speaker on & off in MAME?
#358784 - 09/18/16 08:14 PM
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I am working a real Tron game and I'm using MAME for assistance to compare screens and sounds. I might have a problem with my PCB, but I wanted to check here.
When I run the Tron channel test in the real game, if I physically disconnect one of the speakers, say the left one for instance, then on the 6 channel test, 1, 2 & 3 are loud and clear, 4, 5 & 6 are silent. When I connect the left speaker but disconnect the right speaker, I get the opposite (1, 2, 3 are silent, 4, 5, 6 are loud and clear).
But when I try this in MAME, I always get all 6 loud and clear, even if I have one speaker on. (I’m turning a speaker on or off through my PC, not through MAME).
Again, I could easily be having a problem with my real Tron PCB. But it does lead me to my question. Is it possible to turn off the left or right speaker? I mean through MAME, not my PC. I'd like to simulate what is happening on my cabinet. I looked through the MAMEUI GUI settings and I didn't see anything that addressed this. Or at least I didn't recognize it.
I hope this question makes sense. Thanks,
Joe (joemagiera at ameritech dot net)
[email protected]
Edited by joemagiera (09/18/16 08:17 PM)
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[email protected]
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Re: Can you turn a speaker on & off in MAME?
[Re: joemagiera]
#358785 - 09/18/16 08:22 PM
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> I am working a real Tron game and I'm using MAME for assistance to compare screens
> and sounds. I might have a problem with my PCB, but I wanted to check here.
>
> When I run the Tron channel test in the real game, if I physically disconnect one of
> the speakers, say the left one for instance, then on the 6 channel test, 1, 2 & 3 are
> loud and clear, 4, 5 & 6 are silent. When I connect the left speaker but disconnect
> the right speaker, I get the opposite (1, 2, 3 are silent, 4, 5, 6 are loud and
> clear).
>
> But when I try this in MAME, I always get all 6 loud and clear, even if I have one
> speaker on. (I’m turning a speaker on or off through my PC, not through MAME).
>
> Again, I could easily be having a problem with my real Tron PCB. But it does lead me
> to my question. Is it possible to turn off the left or right speaker? I mean through
> MAME, not my PC. I'd like to simulate what is happening on my cabinet. I looked
> through the MAMEUI GUI settings and I didn't see anything that addressed this. Or at
> least I didn't recognize it.
>
> I hope this question makes sense. Thanks,
>
> Joe (joemagiera at ameritech dot net)
> [email protected]
There are sliders which can be used to adjust the volume for each of the sound chips there in the TAB -> Slider Controls options. ALT+LEFT ARROW will zero out a given setting.. ALT+RIGHT ARROW will max a setting. If you want to go back to 100% (normal) you need to hold the arrow key for a few seconds to bring the levels back up.
That would likely be the closest you'll have available to you.
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Re: Can you turn a speaker on & off in MAME?
[Re: Tafoid]
#358790 - 09/18/16 10:38 PM
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> There are sliders which can be used to adjust the volume for each of the sound chips
> there in the TAB -> Slider Controls options. ALT+LEFT ARROW will zero out a given
> setting.. ALT+RIGHT ARROW will max a setting. If you want to go back to 100% (normal)
> you need to hold the arrow key for a few seconds to bring the levels back up.
>
> That would likely be the closest you'll have available to you.
Thank you Tafoid, that worked and was exactly what I was looking for.
I don't want to be the "boy who cried wolf", so I would like to get someone else to verify on their real machine, but it appears that either MAME has their left & right channels swapped, or the wiring in my cabinet is swapped. The wiring in my cabinet doesn't look like anyone messed with it.
Does anyone have a real Tron cabinet they might be willing to run a test? You'll need to take the marquee off (not as easy as it sounds because Midway usually used security torx screws for the marquee holder. Then disconnect either speaker (just pull one of the prongs off the tab to the speaker, it's not soldered, it's just push on) and go to self test and then channel test.
If I physically disconnect the left speaker, on the 6 channel test, 1, 2 & 3 are loud and 4, 5 & 6 are silent. When I connect the left speaker but disconnect the right speaker, I get the opposite (1, 2, & 3 are silent, 4, 5, & 6 are loud).
When I run the same test in MAME using the slider option, I get the exact opposite of the above. Anyone else with a real Tron game willing to check this out to verify either way?
Joe
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PM's turned off. If you want to reach me, direct email please.
Joe (joemagiera at ameritech dot net)
[email protected]
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Re: Can you turn a speaker on & off in MAME?
[Re: joemagiera]
#358800 - 09/19/16 05:21 PM
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It's pretty common for PCs to have the left and right speakers reversed; most times when MAME is reported as having stereo trouble that's the actual cause (it's even happened to me). Check the Windows Sound Control Panel where you can click each speaker to test and make sure everything's wired properly.
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