Re: [MiNT] Still don't get it - difference between 68020 and 68020-60

[OL <o.l@lutece.net>]

Paul Wratt a écrit :
> On Fri, Jun 18, 2010 at 5:13 AM, m0n0 <ole@monochrom.net> wrote:
>   
> > Hello,
> >
> > I passed -m68020 to gcc invocation, but gcc takes libs from m68020-60 -
> > why is that? Would be nice if someone can explain it in one sentence :)
> > As far as I understood the -m68020 is using the fpu, while 68020-60
> > doesn't.
> >
> > Greets,
> > Ole
> >
> >     
>
> so Ole is right in assuming:
> ""
>  the -m68020 is using the fpu, while 68020-60 doesn't.
> ""
>
> Thats a question, and I presumue (if yes) it applies to ALL other non
> 68000 targets?
>
> I just checked Wiki, it says 040 was the first with onboard FPU...
>
> can someone clarify this. (what gcc is using with a specific target)
>
> Paul
>
>   

-m68020 doesn't use FPU it's for 68020 only

68020-60 : use FPU but a compatible FPU with 68060 (reduce opcode compare to 68881 or even 68040)
So software compiling with 68020-60 use FPU and can run on any processor with FPU without needed any emulation soft code.

Olivier 

>