mi0-2 apply to RA, RB, RC respectively, as input registers, and
likewise mo0-1 apply to output registers (RT/FRT, RS/FRS) respectively.
SVme is 5 bits (one for each of mi0-2/mo0-1) and indicates whether the
-SVSHAPE is actively applied or not.
+SVSHAPE is actively applied or not, and if so, to which registers.
-* bit 0 of SVme indicates if mi0 is applied to RA / FRA / BA / BFA
-* bit 1 of SVme indicates if mi1 is applied to RB / FRB / BB
-* bit 2 of SVme indicates if mi2 is applied to RC / FRC / BC
-* bit 3 of SVme indicates if mo0 is applied to RT / FRT / BT / BF
-* bit 4 of SVme indicates if mo1 is applied to Effective Address / FRS / RS
+* bit 4 of SVme indicates if mi0 is applied to source RA / FRA / BA / BFA / RT / FRT
+* bit 3 of SVme indicates if mi1 is applied to source RB / FRB / BB
+* bit 2 of SVme indicates if mi2 is applied to source RC / FRC / BC
+* bit 1 of SVme indicates if mo0 is applied to result RT / FRT / BT / BF
+* bit 0 of SVme indicates if mo1 is applied to result Effective Address / FRS / RS
(LD/ST-with-update has an implicit 2nd write register, RA)
The "persistence" bit if set will result in all Active REMAPs being applied