Changes

Main component is Z80 on JavaCPC. In fact, Z80JavaCPC's JavaCPC Z80 is already configured in order to run each instruction with a certain timing : a timing already synchronized with CRTC (each instruction takes 4 Tstates or 8 Tstates, Z80@4MHz CRTC@16bit@1MHz so drawing 8 colored pixels on mode 1 takes 4 Tstates)