This addon adds recipes for the minecraft discs. The recipes are simple:
Any disc requires three items: a unprogrammed disc and two disc programmers.
To craft a unprogrammed disc just place 8 iron nuggets in the crafting grid and leave a space in the middle.
To craft a programmer just place a iron ingot in the bottom left corner, an iron ingot in the center space, and a iron nugget in the top right corner.
To craft a disc set the unprogrammed disc in the center of the crafting grid and place the programmers into spaces around the disc. Different patterns of programmers around the unprogrammed disc produce different discs. Some combinations do not produce a disc.