for "(80 + 16 times instruction-length)", as defined in Section 1.5
of the RISC-V ISA, is as follows:
-| 15 | 14:12 | 11:10 | 9:8 | 7 | 6:0 |
-| - | ----- | ----- | ----- | --- | ------- |
-| vlset | 16xil | pplen | rplen | mode | 1111111 |
+| 15 | 14:12 | 11:10 | 9 | 8 | 7 | 6:0 |
+| - | ----- | ----- | ----- | ---- | --- | ------- |
+| vlset | 16xil | pplen | rplen | pmode | rmode | 1111111 |
The VL/MAXVL/SubVL Block format: