Newsgroups: alt.cd-rom
From: Andy@armswalk.demon.co.uk (Andy Armstrong)
Path: cdrom.com!barrnet.net!sgiblab!swrinde!cs.utexas.edu!howland.reston.ans.net!pipex!demon!armswalk.demon.co.uk!Andy
Subject: Re: Reading track information from AudioCDs
References: <6V-m7Zj024n@uniqway.demon.co.uk>
Organization: Armstrong Walker Ltd
Reply-To: Andy@armswalk.demon.co.uk
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Date: Tue, 15 Mar 1994 12:44:05 +0000
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In article <6V-m7Zj024n@uniqway.demon.co.uk>
           simon@uniqway.demon.co.uk "Simon Middleton" writes:

> How do you read the textual track listing from a standard Audio CD ?
> 
> I know that not all CDs have this information encoded in them.
> I know that the Apple CD300 and it's software as supplied on the AV Macs
> can do it, 'cos I've seen it.
> I believe that it is stored in the P or Q sub tracks or something like
> that.

Simon,

We've met in the flesh but never on here before.

I've just written the driver for our Ultimate Expansion System CD ROM drive
which uses a Mitsumi FX001D drive. From the background research I did for this
it seems that plenty of drives are only capable of reading the Q sub channel
which contains time code and track information (apart from during the lead-in
to the disc when it contains the TOC, times only - no text that I've seen).

I've got a book somewhere which says what the subchannels are allocated to,
and I've got the SCSI interface spec for some Sony drive or other which I
will dig out and send if you think it would help (I'll check first that it
contains the info. you need).

Could you name an audio CD which has this info; it seems that plenty of them
probably don't

Andy Armstrong, Armstrong Walker Ltd