I think I have the RIGHT to publish whatever I want from my work.
not when it involves GPL code you've modified. by modifying the minimig core to add your own agnus core, your agnus core becomes GPL code because you have made a derivative work of a GPL work.
The GPL requires release/publication of all derivative works when asked for it.
The GPL is what allowed you to use the minimig core in the first place. The GPL requires you give back all your changes.
Congrats for writing a new agnus core, I'm sure its not easy, and your doing a lot of hard work on your device, but that does not make you compliant with the GPL.
