Very strange CD problem

[joeybastard]

Out of curiousity last night, I tried playing an audio CD in my Sega CD and my TG16 CD add-on. Neither one would play the CD. It wasn't a CD-R. Both units work fine for their own games but I was under the impression both could play audio CDs too. Am I mistaken?

[thegamezmaster]

I think both are supposed to play audio cd's. Did it not play on more that one cd?

[Atariman]

Both systems DO play audio CDs - I have played audio CDs in both. Sounds like some odd problem with the CD itself.

[Jess Ragan]

Yeah, is it one of those CDs with computer data (bonus content or copy protection) written on it? That could confuse your Sega CD or TurboDuo.

 

JR

[Famicoman]

Perhaps the laser intensity is too low. I know how to change it on a saturn, but nothing else.

[joeybastard]

Yeah, is it one of those CDs with computer data (bonus content or copy protection) written on it?  That could confuse your Sega CD or TurboDuo.

 

JR

1018553[/snapback]

 

It was a newer CD that might have copy protection on it. I hadn't thought of that. There's nothing special you have to do to play audio CDs is there? Like hold down the B button or hit the Run button twice or something like that?

[+FujiSkunk]

Yeah, is it one of those CDs with computer data (bonus content or copy protection) written on it?  That could confuse your Sega CD or TurboDuo.

 

JR

1018553[/snapback]

 

It was a newer CD that might have copy protection on it. I hadn't thought of that. There's nothing special you have to do to play audio CDs is there? Like hold down the B button or hit the Run button twice or something like that?

1018818[/snapback]

 

It depends on the copy protection. Some really screwed up schemes intentionally broke the Red Book standard, munging the data that's supposed to be used for error checking. Theoretically you can get away with that because only ripping programs should care about the error checking bits. In practice, a lot of high-end CD players also choked on those discs. I don't know if the CD game consoles look at the error checking bits of audio CDs, but it's a possibility.

 

If the copy protection is software stored in a data session on the CD, then maybe the game console is detecting that data session and trying to load it as a game. I don't know of any way of forcing a particular console to read the disc as an audio CD, but Google might help.

[JB]

It depends on the copy protection.  Some really screwed up schemes intentionally broke the Red Book standard, munging the data that's supposed to be used for error checking.  Theoretically you can get away with that because only ripping programs should care about the error checking bits.  In practice, a lot of high-end CD players also choked on those discs.  I don't know if the CD game consoles look at the error checking bits of audio CDs, but it's a possibility.

I would actually EXPECT older players such as the TG16 CD to look at the error-correction data. Strangely enough, it seems to be the first devices for any given standard that pay the most attention to it.