CD32 CDAudio

Wachi · 30 March 2019, 12:48

Hi, I know it's a subject that has already been discussed, but I'm not sure and I'd like to know if there's something new.
I have a TF330 extension on my CD32 ...... It is assumed that the CD32 CD-ROM drive is the cd.device unit 0
So, why does not CDAudio work in CDAmiga games (BubbleHeroes, T-zero, Land of Genesis ...) when you specify this unit? However, there are programs that play CDAudio without any problem, (CD-TOP, Megacdplayer, DCPlayer). A greeting.

Toni Wilen · 30 March 2019, 13:47

Most likely difference is how CD audio is played: using CD audio IO commands (CD_PLAYTRACK and friends) or using SCSI CD audio commands via HD_SCSICMD. CD32 (and CDTV) only support IO commands (both have drive that uses non-standard commands). On the other hand, many SCSI/ATAPI HD/CD controllers don't support CD audio IO commands but do support SCSI direct. (and many ancient ones support neither)

Perhaps there is wrapper driver that converts between commands types?

30 March 2019, 12:48	#1
Wachi Registered User Join Date: Jul 2014 Location: Madrid Posts: 141	CD32 CDAudio Hi, I know it's a subject that has already been discussed, but I'm not sure and I'd like to know if there's something new. I have a TF330 extension on my CD32 ...... It is assumed that the CD32 CD-ROM drive is the cd.device unit 0 So, why does not CDAudio work in CDAmiga games (BubbleHeroes, T-zero, Land of Genesis ...) when you specify this unit? However, there are programs that play CDAudio without any problem, (CD-TOP, Megacdplayer, DCPlayer). A greeting.

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30 March 2019, 13:47	#2
Toni Wilen WinUAE developer Join Date: Aug 2001 Location: Hämeenlinna/Finland Age: 49 Posts: 26,534	Most likely difference is how CD audio is played: using CD audio IO commands (CD_PLAYTRACK and friends) or using SCSI CD audio commands via HD_SCSICMD. CD32 (and CDTV) only support IO commands (both have drive that uses non-standard commands). On the other hand, many SCSI/ATAPI HD/CD controllers don't support CD audio IO commands but do support SCSI direct. (and many ancient ones support neither) Perhaps there is wrapper driver that converts between commands types?

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