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Author Topic: Disable SMS FM sound  (Read 1761 times)

ashramkun

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Disable SMS FM sound
« on: September 27, 2017, 01:10:12 pm »
Hello.

I would like to disable the FM support code in some SMS roms. I know that there is some patches that enable this flag to ON. I would like to know if someone could help me identify this code... so I could make a romset without the FM support.

And for those who are asking why I would like to do it, the answers is simple: Because I prefer the PSG sound and my Master system is a Japanese one, and I just can't disable the FM unit.
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KingMike

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Re: Disable SMS FM sound
« Reply #1 on: September 27, 2017, 02:00:24 pm »
It's probably a fairly simple hack to each game if you know ASM.
http://www.smspower.org/Development/FMChipDetection
Would need to find and modify the code to always return the "no FM" flag.
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ashramkun

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Re: Disable SMS FM sound
« Reply #2 on: September 28, 2017, 07:10:03 am »
Well, I don't know ASM, but I will try using the tutorial at SMS Power. Thanks!

October 03, 2017, 12:12:27 pm - (Auto Merged - Double Posts are not allowed before 7 days.)
Success. I talked with some people at SMSpower and they helped me to understand the process. Thanks again!
« Last Edit: October 03, 2017, 12:12:27 pm by ashramkun »
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