D50v is a VST-Controller plug-in for Roland's D50, D550 and VC-1 for V-Synth/VariOS hardware synthesizers.
Once installed the D-50 can be operated almost like a normal VST instrument. All parameters can be controlled via VST automation and via free definable MIDI CCs. Sysex Banks can be imported. Complete Patches and also parts of the patches can be copied and pasted.