[Coco] MMU testing utility

[RETRO Innovations]

On 9/22/2017 1:24 AM, Barry Nelson wrote:
> Enable the mapping as per the doc?
Yep.
> Those are the defaults, they should be enabled at boot.
They are, on the internal GIME MMU, but I am bypassing it completely.
> Are you trying to set all the registers,
well, enough to test.
> or just a few you want to change to test things?
enough to test
> What exactly is “CoCoMEM”?
It's a 2MB RAM expansion for the Coco3 that sits in the GIME socket.  It 
replaces the MMU in the GIME.

Jim