supported within the same processor
* The fight over the extremely limited custom opcode space ends (permanently)
* Entirely foreign ISA may be supported within the same processor
- (not the same as JIT Extension).
+ (actually executed: i.e. not the same thing at all as the JIT Extension).
For instances where mvendorid and marchid are readable, that would be
taken to be a Standards-mandatory "declaration" that the architecture