being bits 19-23 of SVP64 `RM`, is laid out as
follows:
-| 0-1 | 2 | 3 4 | description |
-| ------ | --- |---------|-------------------------- |
+| 0-1 | 2 | 3 4 | description |
+| ------ | --- |---------|----------------------------------|
| 0 0 | 0 | dz sz | simple mode |
-| 0 0 | 1 | RG 0 | scalar reduce mode (mapreduce) |
-| 0 0 | 1 | / 1 | reserved |
-| 1 0 | N | dz sz | sat mode: N=0/1 u/s |
+| 0 0 | 1 | RG 0 | scalar reduce mode (mapreduce) |
+| 0 0 | 1 | / 1 | reserved |
+| 1 0 | N | dz sz | sat mode: N=0/1 u/s |
| VLi 1 | inv | CR-bit | Rc=1: ffirst CR sel |
-| VLi 1 | inv | zz RC1 | Rc=0: ffirst z/nonz |
+| VLi 1 | inv | zz RC1 | Rc=0: ffirst z/nonz |
Fields: