PCSX2
[BUG - BIOS] Audio CDs doesn't work anymore.
Describe the bug Audio CDs won't play any music anymore in the BIOS.
Note: Now when playing a audio CD, the PCSX2 console spams: NCMD Unknown 7
To Reproduce Load the BIOS with a standard audio CD in the virtual tray.
Expected behavior The various tracks on the disc should play fine.
Emulation Settings Everything default.
Regression pull request: https://github.com/PCSX2/pcsx2/pull/1583
System Info PCSX2 Revision: pcsx2-v1.7.0-dev-pr[4171] OS: Windows 10 CPU: I9 9900k GPU: RTX 3070
That regression pull request isn't correct.
Note: Now when playing a audio CD, the PCSX2 console spams: NCMD Unknown 7
#3899 is responsible for that, re-adding the large section of deleted code makes it play though the playback is pretty bugged - it repeats itself a lot and the time increments slowly. So there is another regression somewhere.
I don't think this is really of much priority tho, given that you can use your PC to play those Audio CDs, and not bother with PCSX2 at all.
The faulty playback was caused by #3877.
wait, what? how?
The PR that completely removed the CD Audio read calls seems a lot more freaking likely to me than the change of the read speeds.
I think there's a misunderstanding. #3899 made audio unplayable, whereas #3877 made audio sound buggy because the CD read speed is too slow.
I see, I'm not sure how it's too slow, unless it's not CAV when it's doing CD Audio reads, which makes sense I suppose.
Here's some amusing playback with the deleted code put back in. "10s"
https://user-images.githubusercontent.com/10976277/120988512-8bc5da80-c776-11eb-8211-0fd99ad1de08.mp4
10s with CD speed change reverted (it's not perfect, but yeah)
https://user-images.githubusercontent.com/10976277/120988682-b2841100-c776-11eb-894d-e2cca9a648ff.mp4
If this is a cd read speed issue couldn't this bug help dial into the ps2s exact read speed and maybe help fix other games with cdvd issues?
I suspect audio cd's velocity changes so the speed matches wherever on the cd you are, it's only PS2 games where it uses CAV.
Thanks to the various CDVD timing changes, this is not an issue anymore, the only remaining gremlin is this log:
Apparently 0x2009 is the mode for the "where" registers 0x200c-0x200e (sec/min/hrs?)
0 = audio cd 1 = cd/dvd or something 2 = dvd
The reason it doesn't matter that we don't emulate it currently is because we're basically in permanent audio cd mode.
