refactoring to support multiple virtual disk formats and config file
more changes
Refactors disk image code to better support vitrual disk images
mostly working virtual disk directory listing
removed LCD support, direct boot into fdc mode (for now), and reorganized the virtual drives to better fit the expected hardware behaviours.
Updated to new FPGA logic
Virtual directory working, memory corruption problem fixed.
Cleaned up CocoImage type to simplify
odd issues with support libraries now...  May be due to C/C++ standard?
fixed errant missing null assignment.  Need to sort out out DSKI$ works in coco
Merge branch 'fdc' of ssh://192.168.1.17/cococpld into fdc