Is it possible to use a "Custom TiledMapServiceLayer""Custom TiledMapServiceLayer" as a Basemap? Is it possible to show a "Custom TiledMapServiceLayer" in BasemapGalleryBasemapGallery?
Please refer to the link below for a sample "Custom TiledMapServiceLayer"... https://developers.arcgis.com/javascript/jssamples/layers_custom_tiled.html