From: Stuart Brady <sdbrady@ntlworld.com>
To: qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] [RESEND] [PATCH] ide: fix GET_CONFIGURATION DVD-ROM support
Date: Sat, 5 Jan 2008 10:28:34 +0000 [thread overview]
Message-ID: <20080105102834.GA3379@miranda.arrow> (raw)
In-Reply-To: <200801042153.09808.rob@landley.net>
On Fri, Jan 04, 2008 at 09:53:09PM -0600, Rob Landley wrote:
> Except that according to http://en.wikipedia.org/wiki/CD-ROM it's actually 703
> and 1/8 binary megabytes (360,000 sectors *2048 bytes), which would be
> 1440000.
Apparently that value comes from 75 sectors per second * 80 minutes...
75*80*60 = 360000, and of course, 360000*2048/512 = 1440000, although
it actually seems that it should be one sector less than 80 minutes,
which is 359999 2048-byte sectors or 1439996 512-byte chunks.
BTW, there are/were also 90 and 99 minute 'CD-Rs' -- Wikipedia's page on
CD-Rs describes them, but they were never very popular, and a lot of
drives can't read the discs.
--
Stuart Brady
next prev parent reply other threads:[~2008-01-05 10:28 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-12-26 7:36 [Qemu-devel] [RESEND] [PATCH] ide: fix GET_CONFIGURATION DVD-ROM support Carlo Marcelo Arenas Belon
2008-01-04 10:02 ` Carlo Marcelo Arenas Belon
2008-01-05 0:25 ` Rob Landley
2008-01-05 1:02 ` Stuart Brady
2008-01-05 1:57 ` Stuart Brady
2008-01-05 2:06 ` Carlo Marcelo Arenas Belon
2008-01-05 3:53 ` Rob Landley
2008-01-05 10:28 ` Stuart Brady [this message]
2008-01-06 2:22 ` Carlo Marcelo Arenas Belon
2008-01-06 13:57 ` Stuart Brady
2008-01-06 14:32 ` Andreas Färber
2008-01-07 0:38 ` Carlo Marcelo Arenas Belon
2008-01-07 0:23 ` Carlo Marcelo Arenas Belon
2008-01-05 3:36 ` Carlo Marcelo Arenas Belon
2008-01-06 9:22 ` Rob Landley
2008-01-07 4:47 ` Carlo Marcelo Arenas Belon
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