refine memory operand memory map.
refine memory operand memory map.
Now maps slow ram @ $8000.000 - $8FFF.FFF
Fast RAM @ $0000.000 - $0000.000 - $007F.FFF
IO @ $FFFD.000 - $FFFD.FFF
All else is unmapped.
CPU instructions still read only from fast RAM for now.
Should at least allow page faults when trying to execute from
non-fast-RAM addresses.
add initial document describing planned memory map and links between
slow and fast sides of machine.