Re: File type of machine code? Where does it start?

From	druck <news@druck.org.uk>
Newsgroups	comp.sys.acorn.programmer
Subject	Re: File type of machine code? Where does it start?
Date	2025-06-24 20:47 +0100
Organization	A noiseless patient Spider
Message-ID	<103evcp$27cdp$1@dont-email.me> (permalink)
References	<5c294dfd2cbavariasound@chiemgau-net.de> <lKm*MFveA@news.chiark.greenend.org.uk> <5c29d67fbebavariasound@chiemgau-net.de> <5c2f4363e6bavariasound@chiemgau-net.de> <ac6d592f5c.jmb@jmc.bruck.orange.fr>

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On 19/06/2025 10:23, Jean-Michel wrote:
>  From DDE.Codestds.AOF
> There are two sorts of AOF: <little-endian> and <big-endian>.
> 
> In little-endian AOF, the least significant byte of a word or half-word
> has the lowest address of any byte in the (half-)word. This <byte sex> is
> used by DEC,Intel and Acorn, amongst others.
> 
> In big-endian AOF, the most significant byte of a (half-)word has the
> lowest.address. This byte sex is used by IBM, Motorola and Apple, amongst
> others.

Never seen a big endian AOF in the wild, and suspect no-one else has either.

I can only guess it was specified as a result of Sam Wauchope's crazed 
ideas about running a successor to RISC OS on Power PC or something.

---druck

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File type of machine code? Where does it start? Alexander Ausserstorfer <bavariasound@chiemgau-net.de> - 2025-06-07 17:41 +0200
  Re: File type of machine code? Where does it start? Martin <News03@avisoft.f9.co.uk> - 2025-06-07 18:14 +0100
    Re: File type of machine code? Where does it start? Alexander Ausserstorfer <bavariasound@chiemgau-net.de> - 2025-06-08 18:26 +0200
  Re: File type of machine code? Where does it start? Theo <theom+news@chiark.greenend.org.uk> - 2025-06-08 11:02 +0100
    Re: File type of machine code? Where does it start? Alexander Ausserstorfer <bavariasound@chiemgau-net.de> - 2025-06-08 18:32 +0200
      Re: File type of machine code? Where does it start? Alexander Ausserstorfer <bavariasound@chiemgau-net.de> - 2025-06-19 07:22 +0200
        Re: File type of machine code? Where does it start? Jean-Michel <jmc.bruck@orange.fr> - 2025-06-19 11:23 +0200
          Re: File type of machine code? Where does it start? druck <news@druck.org.uk> - 2025-06-24 20:47 +0100
            Re: File type of machine code? Where does it start? Bob Latham <bob@sick-of-spam.invalid> - 2025-06-25 09:29 +0100
        Re: File type of machine code? Where does it start? Martin <News03@avisoft.f9.co.uk> - 2025-06-19 10:48 +0100
          Re: File type of machine code? Where does it start? Alexander Ausserstorfer <bavariasound@chiemgau-net.de> - 2025-06-20 17:22 +0200
            Re: File type of machine code? Where does it start? Matthew Phillips <spam2011m@yahoo.co.uk> - 2025-06-21 08:20 +0100
        Re: File type of machine code? Where does it start? Theo <theom+news@chiark.greenend.org.uk> - 2025-06-20 17:25 +0100

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