[hun3]

It was kind of an experiment from start. Some ideas turned out to be good, so we keep them. Some ideas turned out not to be good, so we fix them with extensions.

[pjmlp]

The problem with hardware expirements is that people owning the hardware are stuck with experiments.

[nsvd2]

Sure, but if you bought a dev board with an experimental ISA I think you knew what you were getting in to.

[rbanffy]

If your hardware is new, you get the nicest extensions though. You just don’t use the bad parts in your code.

[pjmlp]

Sure, if you are developing software for the computer you own, instead of supporting everyone.

[eru]

Re-compile?

[ahartmetz]

I mean, that is often what you do in embedded computing: you (re)sell hardware with one particular application.