* *even Unvectoriseable* "Defined Words" (`mtmsr`) must have the
corresponding SVP64 Prefixed Space `RESERVED`, permanently requiring
- Illegal Instruction to be raised (the 64-bit encoding allocated
- to `sv.mtmsr` if illegally attempted must be **defined** to
- raise an Exception)
+ Illegal Instruction to be raised (the 64-bit encoding corresponding
+ to an illegal `sv.mtmsr` if ever incorrectly attempted must be
+ **defined** to raise an Exception)
* *Even instructions that may not be Scalar* (although for various
- practical reasons this is extremely rare if not impossible)
+ practical reasons this is extremely rare if not impossible,
+ if not just generally "strongly discouraged")
which have no meaning or use as a 32-bit Scalar "Defined Word", **must**
still have the Scalar "Defined Word" `RESERVED` in the scalar
opcode space, as an Illegal Instruction.