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Groups > comp.sys.acorn.programmer > #595

Re: AIF header - how?

Date 2011-08-12 13:11 +0100
From cferris@freeRemoveuk.com.invalid
Newsgroups comp.sys.acorn.programmer
Subject Re: AIF header - how?
Message-ID <09f4960152.cferris@cferris.freeuk.com> (permalink)
References (1 earlier) <8b8f260152.martin@blueyonder.co.uk> <52012a031abob@sick-of-spam.invalid> <ca8b390152.cferris@cferris.freeuk.com> <52013fd1e9bob@sick-of-spam.invalid> <j23114$d3u$1@dont-email.me>
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In message <j23114$d3u$1@dont-email.me>
          John Tytgat <this@is.invalid> wrote:

> On 8/11/2011 10:19 PM, Bob Latham wrote:
> > Thanks for the information, most enlightening.
> 
 
[snip]

> >
> > So after it has run the existing code it will return from the
> > subroutine and exit with swi "OS_Exit"? I take it that OS call
> > doesn't return?
> 
> OS_Exit does indeed not return.

The OS_Exit in the header is I think a 'Belt & Braces' - ie not usually
used.
> 
> > 3) What's a debug type?
> 
> Cfr URL mentioned above.
> 
> > 4) Are there any examples in code I might understand ie basic or
> > assembler? I will never understand 'C' its not of my universe.
> 

Have you tried downloading the demo of 'DeskDebug' - there is a nice
program of a Multi-tasking game in Assembler.

If you are using a 26bit RO then '!Arm_Debug' (ask for latest) and
course there is '!Reporter' - they may be of some use.

Have a look at a !Runimage file (in '!Zap') - which was created by the
'C' compiler - its of course be ARM code now - it will show the AIF
header.

Drucks - '!ARMalyser' program is pretty good at disassembly - try your
programs in it.

Bye
-- 
Colin Ferris Cornwall UK

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Thread

AIF header - how? Bob Latham <bob@sick-of-spam.invalid> - 2011-08-11 12:11 +0100
  Re: AIF header - how? Martin Bazley <martin.bazley@blueyonder.co.uk> - 2011-08-11 16:43 +0100
    Re: AIF header - how? Bob Latham <bob@sick-of-spam.invalid> - 2011-08-11 17:21 +0100
      Re: AIF header - how? cferris@freeRemoveuk.com.invalid - 2011-08-11 20:11 +0100
        Re: AIF header - how? Bob Latham <bob@sick-of-spam.invalid> - 2011-08-11 21:19 +0100
          Re: AIF header - how? John Tytgat <this@is.invalid> - 2011-08-12 12:58 +0200
            Re: AIF header - how? cferris@freeRemoveuk.com.invalid - 2011-08-12 13:11 +0100
              Re: AIF header - how? druck <news@druck.org.uk> - 2011-08-13 15:09 +0100
        Re: AIF header - how? jgharston <jgh@arcade.demon.co.uk> - 2011-08-11 15:49 -0700
  Re: AIF header - how? Rick Murray <heyrickmail-usenet@yahoo.co.uk> - 2011-08-13 00:57 +0200
  Re: AIF header - how? Bob Latham <bob@sick-of-spam.invalid> - 2011-08-13 10:42 +0100

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