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RE: [Qemu-devel] Re: BIOS behaves different as real BIOS
From: |
Natalia Portillo |
Subject: |
RE: [Qemu-devel] Re: BIOS behaves different as real BIOS |
Date: |
Sat, 17 Jul 2004 07:45:36 +0100 |
Excuse me, where are the CMOS RAM values in qemu :?
> -----Mensaje original-----
> De: address@hidden
> [mailto:address@hidden
> En nombre de Ben Pfaff
> Enviado el: sábado, 17 de julio de 2004 7:40
> Para: address@hidden
> Asunto: [Qemu-devel] Re: BIOS behaves different as real BIOS
>
> "Natalia Portillo" <address@hidden> 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
>
>
>
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Re: [Qemu-devel] BIOS behaves different as real BIOS, Antony T Curtis, 2004/07/17