Paddle fixes. Enable pokey even when only ZPU active. Fix allpot.
No need for mmu to deal with refresh at all
Cleaned up ZPU into slightly more generic form, though still clearly atari core targetted. Added inital tb, though needs rom to verify more. MIST sector side removed, but should be possible with external changes. Now ZPU instead has lots of GPIO.
Make these generic to support Replay (28MHz) and the rest (57MHz)
Current unmerged vhdl for my Atari800 core and start at merging them into one tree with a common core