Version 1.0 of the RetroCade Synth ZPUino SOC.
Merge branch 'master' of https://github.com/alvieboy/ZPUino-HDL
ZPUino variant for the Arcade MegaWing 2.1 on the P1 500K.
ZPUino variant for LogicStart MegaWing, derived from "Hyperion" for P1 500K.
Sending MOD output to the mixer
Cleanup
merge mod and sid/ym2149 output for RetroCade
Merging Papilio Pro branch
Pull from Alvie's Master
RetroCade Variant for Papilio Pro.
Revert "Pull from Alvie's Master"

This reverts commit 397b734bb36f9e166f8e24b2a2300c0b65f0413b.
Cleanup
Cleanup RetroCade Lite directories
Minor change
Removing xst and ut from gitignore
Adding required files
Adding prj file
Working on stepper variant
Clean up left over logic.
Stepper variant readme