[Coco] The 6502 sprints ahead of the 6809: 100Mhz 6502

Dave Philipsen dave at davebiz.com
Thu Oct 14 19:29:57 EDT 2021


It would be cool though if the design becomes available to the public to 
indeed load it up with the 6809 core and see just how fast it would run 
albeit with the 6502 pinout.


On 10/14/2021 5:18 PM, RETRO Innovations wrote:
>
> The presentation goes over many of these items:
>
>  * It is indeed limited to 64K internal RAM, but has a capability to
>    handle bank switching.  Author notes it is not tested and isn't sure
>    it's needed for the use case, as it does slow down (I assume it
>    copies all the 64 K of the current bank into internal, flushing it
>    each time the banking changes.
>  * The customization (some of it anyway) can be done via DIP switches
>    on the top of the unit.
>  * Point is made, though, that the exact same HW design could be loaded
>    with 6809 core, if a 100MHz 6X09 core exists.  I don't think one
>    does at this point.
>
> Thus, I think, at least until someone cleans up the timing on the 6X09 
> cores so they can do 100MHz, the OP has a point.
>
>
> Jim
>
>


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