Re: FPGApple + ARM?

["Henry" <apl2research@comcast.net>]

Good or bad idea, you make one and I'd love to add it to the Website's 
Store!

Find a way to emulate a 65816 in an FPGA and then give me hand with the 
TransWarp IIgs.  Sales of that should be good at least.


Henry S. Courbis
www.GSE-Reactive.com
Apple II Series Legacy Hardware - Come take a look at what we have to offer!

"Jorge Chamorro Bieling" <bieling@terra.es> wrote in message 
1ha9djg.jgi0nd1vt8jhsN%bieling@terra.es">news:1ha9djg.jgi0nd1vt8jhsN%bieling@terra.es...
> Michael J. Mahon <mjmahon@aol.com> wrote:
>
>> OK, so what you're saying is that you'd like to have an ARM processor
>> in an Apple II bus environment...
>
> Pssst, Hey, Michael, the original post said :
>
>> <aiiadict@gmail.com> wrote:
>> [...]
>> charlie has an ARM cpu, has outlined and perhaps
>> even written 6502 emulator in ARM assembly language.
>>
>> I'd like to use FPGA for apple II emulation, ARM for 6502 emulation.
>> [...]
>> Rich
>
> I think it's a good idea, a nice toy to play with.
> As a bussiness is most likely a bad idea.
>
>> > It's not. But it's powerful. Better think of it as a configurable
>> > coprocessor if you want to.
>>
>> Been there, done that--and in practice it's not as useful as you
>> imagine.  Again, only very special problems merit such an approach,
>> and even they might be better served with an FPGA-based solution.
>
> What you're saying is that if you want a certain "coprocessor function"
> you remove this thing from the apple2 and reprogram the fpga and then
> plug it back in the apple2 ?
> What I say is that you map a 6502 unused opcode to a chunk of arm code
> that you write. It's easy, it's flexible and it's powerful. And you
> don't need to remove the cpu... :-)
>
>> Yes, but, as I noted before, that's not an "extension" to the 6502;
>> that's a whole new processor.  The 6502 mode is only there for
>> compatibility!  It's not an Apple II!!
>
> It's the 30th anniversary apple2 !!
>
> -- 
> Jorge Chamorro Bieling