LAYOUT: editor for Yamaha TG500 by asylum

The Yamaha TG77 is a 64-voice polyphonic, FM synthesis-based keyboard released in 1992. As Vintage Synth Explorer puts it, "Despite the lack of controls, the TG500 has edit capabilities as extensive as the SY-85, and is easiest to program using an external or software based editor."... And that's EXACTLY where Hans Scholten's extensive layout for the Yamaha TG500 comes in. Almost all of the parameters can be controlled with the layout. A document is provided that describes the design aspects, limitations and work-arounds of the layout, so be sure to check it out. This layout is HUGE!