This tool is one of the tools that I've developed in order to streamline the creation of tile sets and tile maps for the VERA.
https://github.com/jestin/tmx2vera
The tmx2vera command line utility is intended to convert tile map files created with Tiled (https://www.mapeditor.org/) into VERA compatible tile maps. It is intended to be used with my other tool, the GIMP VERA Plugin (viewtopic.php?t=6455). Together, these tools allow developers to create a build process that automates the creation of tiles and tile maps and allows for a game-engine-like development workflow:
There is even an option for creating non-VERA-compatible main memory tile maps that are useful for things like collision maps.