Also the `svshape` instruction only provides access to part of the
Matrix REMAP capability. Rotation and mirroring need to be done by
programming the SVSHAPE SPRs directly, which can take a lot more
-instructions.
+instructions. Future versions of SVP64 will include EXT1xx prefixed
+variants (`psvshape`) which provide more comprehensive capacity and
+mitigate the need to write direct to the SVSHAPE SPRs.
### FFT/DCT Triple Loop