[Coco] Writing a virtual GPU / FPU device.

L. Curtis Boyle curtisboyle at sasktel.net
Fri May 31 01:32:14 EDT 2019

I can confirm that the angle side IDE has a jumper between FF50 and FF70. 

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> On May 30, 2019, at 10:49 PM, RETRO Innovations <go4retro at go4retro.com> wrote:
>> 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.
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