[Coco] Writing a virtual GPU / FPU device.

[RETRO Innovations]

On 5/30/2019 10:42 PM, Bill Nobel wrote:
> Although it’s not complete, but thanks Jim.  I was looking for the same type of thing.  I do have a question though.  You have blue as Alternate Primary, is this a ghost image of the device? I.E. if I Poke to $FF50 for the Glenside does the same value appear at $FF70?

No, I understood those devices have a jumper or some configuration 
setting to "move" the base address.

The addresses you would note as "ghost image" I note in the spreadsheet 
as "mirrored address", I think.