Allow more than 4 bits of precision
Fixed turbo
Re-connected SDRAM to DE1
to_01 silenced sim, but caused build issues on Xilinx. If its invalid use 0
Split up into 2 sections. Quartus will not infer the ram block with it mixed
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.
Current unmerged vhdl for my Atari800 core and start at merging them into one tree with a common core