| 6 | 7 | 19-20 | 21 | 22 23 | description |
| - | - |-------| --- |---------|----------------- |
|sz |SNZ| 0 RG | 0 | dz / | simple mode |
-|sz |SNZ| 0 RG | 1 | 0 / | scalar reduce mode (mapreduce), SUBVL=1 |
-|zz |SNZ| 0 RG | 1 | SVM 0 | subvector reduce mode, SUBVL>1 |
-|zz |SNZ| 0 RG | 1 | / 1 | reserved |
+|sz |SNZ| 0 RG | 1 | 0 / | scalar reduce mode (mapreduce) |
|zz |SNZ| 1 VLI | inv | CR-bit | Ffirst 3-bit mode |
|sz |SNZ| 1 VLI | inv | dz / | Ffirst 5-bit mode |