===FlashFloppy firmware===
[https://github.com/keirf/FlashFloppy FlashFloppy] is probably the most popular firmware for the GOTEK. It's well supported by the author Keir Fraser. Although completely free, Keir welcomes donations to and [https://wwwgithub.macmillan.org.ukcom/ Macmillan Cancer Support charity in the UKkeirf/flashfloppy/blob/master/COPYING completely free]. Please do a donation if FlashFloppy is of help to you.
The firmware supports multiple computers and their disk image formats.