Re: [hatari-devel] Hatari FPU support

[Eero Tamminen <oak@xxxxxxxxxxxxxx>]

Hi,

On 12/6/20 11:08 PM, Nicolas Pomarède wrote:
> Le 06/12/2020 à 21:42, Eero Tamminen a écrit :
> > Nicolas, I think FPU should be listed in Hatari
> > manual HW matrix, but I'm not sure what notes
> > I should add for each machine type.  Any suggestions?
>
> FPU line could be added to the matrix. 68881/82 can be used with 
> 68020/030. With 68040/60, FPU is included in the cpu (but as these cpu 
> were not natively used in atari's machine, it's not an issue for the HW 
> matrix).
>
> As christian wrote, 68000/10 can't use the 68881/82 directly ; note that 
> Winuae's cpu core has a hack mode to use the FPU with 68000/10 anyway, 
> but we don't use it in Hatari for now.
>
> So, in the end, I think that FPU emulation should be marked as available 
> i the matrix only for TT/Falcon (ie 68030 CPU). Other machines are using 
> a 68000, so it should not be considered as possible (at least for Hatari 
> at the moment, even if some HW modifications could be made, as described 
> by Christian)

Christian's mail gave good names for the FPU
variants I added to the HW matrix.  I did some
improvements to CPU Dialog section too.


	- Eero