Re: [hatari-devel] UAE core regressions in Falcon demos

[Laurent Sallafranque <laurent.sallafranque@xxxxxxx>]

It seems I spoke too fast.

From a previous message I sent to the list about magic, I wrote :

Falcon test :
----------------

It tests for the FPU addresses, doesn't find it and continues until a 
test for the Microwire.
[...]

I've got the following message in the console: M68000 Bus Error reading 
at address $fffa46.

According to hardware.txt, it's a FPU register.

$FFFA46|word |FP_Restor  Restore-Register                          |??? 
(MSTe)



It seems that Magic tests this FPU register to decide if there's a FPU 
or not in the computer.

We could add these FPU addresses in IOmemTab [falcon/TT] if FPU is 
active in the GUI and remove these addresses if FPU is not chosen.

It could be ioreadWithoutInterception ?

The problem is that I haven't got Magic to test.

Regards

Laurent






Le 29/02/2012 21:44, Laurent Sallafranque a écrit :
> Ok, that's a good news :)
>
> It means less work lol
>
> Laurent
>
>
> Le 29/02/2012 20:58, Thomas Huth a écrit :
> > Am Tue, 28 Feb 2012 09:47:29 +0100 (CET)
> > schrieb laurent.sallafranque@xxxxxxx:
> >
> > > Another point: When I was working on Magic emulation, it seemed that
> > > there are some registers specifics to the 68881/68882 that are not
> > > present into iomemtabfalcon.c Maybe we could add them, like for the
> > > DSP, by testing if the FPU is present or not, and adding/removing
> > > them in the iomemtab table ?
> > Well, I wonder whether there are really programs that only support the
> > obsolete IO memory register interface to the FPUs? I think most
> > programs are using the normal line-f interface instead, so unless you
> > find a program that really only works with the IO register interface, I
> > think it is not worth the effort to implement this.
> >
> >   Thomas