
The files in this directory are just raw rom images with Atari binary load XEX headers attached.

To make your own .xex formatted rom images from raw rom images just prefix the xex header for the appropriate rom type to your rom image and save it with a .xex extension.

For example, if you have a OS rom image called STOCKXE.ROM, you just do:

copy /b headers\header_os.bin+STOCKXE.ROM stockxe.xex

This creates a new file, stockxe.xex that contains both header_os.bin and stockxe.rom, in that order.
  