Allright, the ISA itself is probably protected under some copyrights(+patents), which in the US last for ~one century (cf Disney). In the end, nobody sane woul

Allright, the ISA itself is probably protected under some copyrights(+patents), which in the US last for ~one century (cf Disney). In the end, nobody sane would try its luck, better go for something non "IP-locked". Aka RISC-V, not to mention that for a modern implementation RISC-V is more friendly.