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From: "Natalia Portillo" <claunia@claunia.com>
To: blp@cs.stanford.edu, qemu-devel@nongnu.org
Subject: RE: [Qemu-devel] Re: BIOS behaves different as real BIOS
Date: Sat, 17 Jul 2004 07:45:36 +0100	[thread overview]
Message-ID: <E1Bliz1-0000m6-KR@lists.gnu.org> (raw)
In-Reply-To: <87brifm90u.fsf@benpfaff.org>

Excuse me, where are the CMOS RAM values in qemu :? 

> -----Mensaje original-----
> De: qemu-devel-bounces+iosglpgc=teleline.es@nongnu.org 
> [mailto:qemu-devel-bounces+iosglpgc=teleline.es@nongnu.org] 
> En nombre de Ben Pfaff
> Enviado el: sábado, 17 de julio de 2004 7:40
> Para: qemu-devel@nongnu.org
> Asunto: [Qemu-devel] Re: BIOS behaves different as real BIOS
> 
> "Natalia Portillo" <claunia@claunia.com> writes:
> 
> > I think that this is because the BIOS searches for the 0x55AA 
> > signature on last two bytes of first sector of disk.
> > As far as I remember, this signature was introduced very 
> lately and as 
> > far as I tested on my real systems, this signature is not really 
> > searched at boot time, and every DOS before 3.0 doesn't 
> have it (it is 
> > used also by later DOSes and Windows to identify a FAT 
> filesystem), at 
> > least on floppies
> 
> You can disable the signature check by setting byte 0x38 in 
> the CMOS RAM to a nonzero value.
> --
> "...In the UNIX world, people tend to interpret `non-technical user'
>  as meaning someone who's only ever written one device driver."
> --Daniel Pead
> 
> 
> 
> _______________________________________________
> Qemu-devel mailing list
> Qemu-devel@nongnu.org
> http://lists.nongnu.org/mailman/listinfo/qemu-devel

  reply	other threads:[~2004-07-17  6:47 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-07-17  6:01 [Qemu-devel] BIOS behaves different as real BIOS Natalia Portillo
2004-07-17  6:40 ` [Qemu-devel] " Ben Pfaff
2004-07-17  6:45   ` Natalia Portillo [this message]
2004-07-17  6:51     ` Ben Pfaff
2004-07-17  7:04       ` Natalia Portillo
2004-07-17 15:47         ` Ben Pfaff
2004-07-17  7:12 ` [Qemu-devel] " Antony T Curtis
2004-07-17  8:20   ` Natalia Portillo

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