Re: Non-6502 ROM used for software key?

From: David Wood <jbevren_at_gmail.com>
Date: Mon, 26 Mar 2018 16:38:55 -0400
Message-ID: <CAAuJwirsmrJ3B=AgvNX_ymUim9vRdrVo6SeMPb7PvqJm-k6N8g@mail.gmail.com>
I think so.  aa-55 is a bios signature as I remember.
http://www.on-time.com/rtos-32-docs/rttarget-32/programming-manual/running-a-program-on-the-target/booting-from-a-bios-extension.htm

The endianness would be reversed as apparently its 55 aa according to the
linked article.

On Mon, Mar 26, 2018 at 2:57 PM, Segher Boessenkool <
segher@kernel.crashing.org> wrote:

> Hi!
>
> On Mon, Mar 26, 2018 at 11:38:00AM -0400, Ethan Dicks wrote:
> > 000002 aa 55 02 00 29 13 2b 0b 05 00 29 11 2b 11 1b 0b
> > 000012 09 00 70 2a 3d 25 17 28 41 c8 2a 3d 24 16 25 3f
> > 000022 84 48 20 30 50 2a 3d 41 2c 2a 1c d4 11 10 16 06
> > 000032 16 07 11 0f 7b 51 16 2c 17 2c 31 84 05 25 ff 94
> > 000042 f6 30 84 23 2c 41 8e 2c 20 10 f0 94 e1 4a 51 4b
>
> > I suppose this could be some sort of embedded firmware where the
> > designers swapped a data line or two for layout then convolved the ROM
> > contents to match, but I think it's more likely to be code for a
> > different processor architecture.
> >
> > Any ideas?
>
> It looks like an ibm pc rom?
>
>
> Segher
>
>
Received on 2018-03-26 23:00:03

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