Bank Number Display [1] acts as a menu as well as a display to show the active Layer Patch bank number. You can navigate to different banks based on your selected JP model.
If your model is set to JP-8000, bank menu does not have as many options as when JP-8080 is set as a current model. This is because JP-8080 has a bigger memory capacity. When REQUEST DATA ON PROGRAM CHANGE is toggled on, this popup menu will display bank numbers available to browse. See image below.
JP-80×0 Editor User Manual – Bank Change Menu
Like with Program Number Display, Bank Number Display [1] will behave completely different when LIBRARY CONTROL ON PROG CHANGE [2] is toggled on. You can now view all available Patch Banks located in Patches folder.
JP-80×0 Editor User Manual – Bank Change Menu Lib Control On