MiSTer audio has SCMS copy protection bit ON

Discussion of developmental aspects of the MiSTer Project.
S0urceror
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MiSTer audio has SCMS copy protection bit ON

Unread post by S0urceror »

I noticed that MiSTer emits S/PDIF audio frames with all status bits zero.

According to the specification this leads to SCMS copy protection enabled, original recording flag being off and audio being reported as 44.1kHz.
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In my case this meant that my USB sound card was unable to capture the audio. After the changes as part of the pull-request this is now no problem.
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I tested it also on the Sega Genesis core and I confirm it is now all working with no negative effect on my other devices (TV, monitor, HDMI switch, etc.).

I created a pull request on the GitHub to make this fix part of the template core system so that all cores can benefit.
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barfood
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Re: MiSTer audio has SCMS copy protection bit ON

Unread post by barfood »

Nice find! Can you link your PR, or is it already merged?
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aberu
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Re: MiSTer audio has SCMS copy protection bit ON

Unread post by aberu »

barfood wrote: Mon Jan 11, 2021 8:21 pm Nice find! Can you link your PR, or is it already merged?
https://github.com/MiSTer-devel/Template_MiSTer/pull/15
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