Changes
/* Technical */
* Button triggers NMI
* 8K ROM appears to be split into twodata has 4 regions. One There is an NMI vector at &0066, &0866, &1066 and &1866 which indicates each of the switches changes 4 regions is selectable and mappable into the rolerange &0000-&7ff. What is not clear is if the regions repeat or not in memory space.* Uses direct FDC disc access for loading/saving.
* Uses an I/O port &f0e0
