**must**, at the bare minimum, raise Illegal Instruction traps for
all SPRs including all reserved SPRs, all SVP64-related Context
instructions (REMAP), as well as for the entire SVP64 Prefix space.
+
+Summary of Compliancy Levels, each Level includes all lower levels:
+
+* **Ultra-embedded**: `setvl` instruction and context-switching of SVSTATE
+ into SVSRR1. Register Files as Standard Power ISA.
+* **Embedded**: `svstep` instruction, all SV Branch instructions,
+ and support for Hardware for-looping
+ in both Horizontal-First and Vertical-First Mode as well as Predication