this get created by the whd autoboot loader. its run in some amiga os format, i think it is under workbench.
this is the created file format:
https://www.file-upload.net/download-13422853/1stDivisionManager.auto-startup.html
sorry i have to upload becase there are some special characters inside.
we can create this file, bud you have one difference on it.
if a data folder is present in the zip/lha file you have to handle this parameter differnt.
Example:
DATA="whdloadgame:GalaxyBlast/data/" #### this is correct if a data folder is present
DATA="whdloadgame:GalaxyBlast/" #### this is the way to go without data folder.
i know there is no lha packet availeble, bud a have start to build a working makefile for this.