RE: m68k assembler

["Bruce Adams" <bruadams at tycoint dot com>]

> 
> Bruce Adams wrote:
> >>On Tue, Sep 10, 2002 at 11:48:29AM +0100, Bruce Adams wrote:
> >>
> >>
> >>>Thanks.  I can now see that the dialect does not match that of the
> >>>code base I wish to port (including some third party source).  Is
> >>>there any way I persuade gas to accept my dialect or must I abandon
> >>>this endeavor and switch to a commercial product (I feel dirty just
> >>>saying that :-).
> >>
> >>--register-prefix-optional will "fix" the d0 vs %d0 issue, 
> >>and a little
> >>sed (or perl) goes a long way in the assembly world for translating
> >>between incompatible assembly formats.
> >>
> > 
> > or even TCL, sed's dead baby. :-)
> > That's not the point though.  I don't what the 'correct' assembly
> > format is.  The manual is misleading.
> > 
> 
> This is a tough problem.
> 
> Gas format is odd, well different. And because the documentation
> covers so many machine types it is hard to decypher what you
> should do for a particular machine.
> 
> Note: There is a command line switch for gas in the m68k section,
> --mri that turns on "MRI" mode. This may solve a lot of your
> problems! (But probably not all)
>
> Best regards
> 
> Paul Whitfield
>
Forgive my ignorance but what is MRI mode (Magnetic Resonance Imaging?)
Nevermind, found it "Microtec Research" compatibility mode.  Still not
sure about the I though :-)

http://www.oarcorp.com/rtems/releases/4.5.0/rtemsdoc-4.5.0/share/toolsdoc/ht
ml/as/a00029.html

I've surfed around and found a lot of people having similar problems to
me but not a single answer.  The number of times the question comes up it
ought to be in a FAQ.
Just try searching for "operands mismatch" 
in google (or google groups) and you'll see what I mean

An example my specific problem which may or may not be the same is:
 
    Error: operands mismatch -- statement 'cmp.b (a0),d7'

Oddly it accepts move.b in 'move.b (a0),d7'.

Any ideas?
			Regards,
			       Bruce A. 



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