[Coco] CoCo 3 MMU test for all

[Roger Taylor]

At 11:55 AM 1/20/2008, you wrote:
>I just tried with a '86 GIME and 128 Kb, also getting 121.

It looks like I might be able to store a 121 in 65441 since that's 
what will be read back by LOADM, and maybe an emulator compatible 
version could be built alongside the one for the real CoCo 3.  Both 
VCC and M.E.S.S. show the actual MMU block # 57 without any of the 
upper 2 bits set.  Ideally, this is how it should be but it's only 
been like 22 years of it Not being that way, so oh well.  :)

I'll wait on more feedback, though.