Date: Tue, 15 Jul 2003 09:03:37 -0700
From: "Randy.Dunlap" <rddunlap@osdl.org>
To: koala.gnu@tiscalinet.it
Cc: Riley@Williams.Name, linux-kernel@vger.kernel.org
Subject: Re: Linux boot code
Message-Id: <20030715090337.6ce4b9a3.rddunlap@osdl.org>
In-Reply-To: <3F13C6BA.80102@tiscalinet.it>
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	<3F13C6BA.80102@tiscalinet.it>
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On Tue, 15 Jul 2003 11:17:46 +0200 Koala GNU <koala.gnu@tiscalinet.it> wrote:

| Hi, Riley,
| 
| thanks for your reply.
| 
| I noticed the native boot code for floppy is not supported any more. In 
| fact in the current code display a message and reboot the machine after 
| the press of a key.
| 
| But I am interested on how the old native boot code worked.
| 
| Do you know if there is a particular reason why the boot sector is moved 
| to 0x9000:0 (excuse me if I repeat the question, but I need help on this)?

Why do you need to know?

IIRC, it's because the code being loaded also (usually) is written
as a boot loader also, and boot loaders often assume that they are
loaded at 0:7c00.  (disclaimer: it's been a few years since I worked
on boot loaders.)

| I hope someone else can point me a site where is reported the format of 
| the floppy parameter table at address 0x0:0x78.

http://www.delorie.com/djgpp/doc/rbinter/id/55/24.html (for one)

--
~Randy
| http://developer.osdl.org/rddunlap/ | http://www.xenotime.net/linux/ |
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