The C64 however, was capable of automating the entire knitting process thanks to a system called CAPS (made by Empisal in Germany).

The setup consisted of the C64 (of course!), an Empisal 550/560 knitting machine and the CAPS interface. The process of knitting your favorite jumper consisted of designing a series of patterns on the C64 which you could then save to disk and combine with other patterns to create a larger image. Source