First, bits 17:0:
-+---------------+--------+--------+----------+-----+--------+-------------+------+---+--------+
-| Encoding | 17 | 16 | 15 | 14 | 13 | 12 | 11:7 | 6 | 5:0 |
-+---------------+--------+--------+----------+-----+--------+-------------+------+---+--------+
-| P48-LD-type | rd[5] | rs1[5] | vitp7[6] | vd | vs1 | vitp7[5:0] | 0 | 011111 |
-+---------------+--------+--------+----------+-----+--------+-------------+------+---+--------+
-| P48-ST-type |vitp7[6]| rs1[5] | rs2[5] | vs2 | vs1 | vitp7[5:0] | 0 | 011111 |
-+---------------+--------+--------+----------+-----+--------+-------------+------+---+--------+
-| P48-R-type | rd[5] | rs1[5] | rs2[5] | vs2 | vs1 | vitp6 | 0 | 011111 |
-+---------------+--------+--------+----------+-----+--------+--------------------+---+--------+
-| P48-I-type | rd[5] | rs1[5] | vitp7[6] | vd | vs1 | vitp7[5:0] | 0 | 011111 |
-+---------------+--------+--------+----------+-----+--------+--------------------+---+--------+
-| P48-U-type | rd[5] | *Rsvd* | *Rsvd* | vd | *Rsvd* | vitp6 | 0 | 011111 |
-+---------------+--------+--------+----------+-----+--------+-------------+------+---+--------+
-| P48-FR-type | rd[5] | rs1[5] | rs2[5] | vs2 | vs1 | *Rsvd* | vtp5 | 0 | 011111 |
-+---------------+--------+--------+----------+-----+--------+-------------+------+---+--------+
-| P48-FI-type | rd[5] | rs1[5] | vitp7[6] | vd | vs1 | vitp7[5:0] | 0 | 011111 |
-+---------------+--------+--------+----------+-----+--------+-------------+------+---+--------+
-| P48-FR4-type | rd[5] | rs1[5] | rs2[5] | vs2 | rs3[5] | vs3 [#fr4]_ | vtp5 | 0 | 011111 |
-+---------------+--------+--------+----------+-----+--------+-------------+------+---+--------+
++---------------+--------+--------+----------+-----+--------+-------------+------+--------+--------+
+| Encoding | 17 | 16 | 15 | 14 | 13 | 12 | 11:7 | 6 | 5:0 |
++---------------+--------+--------+----------+-----+--------+-------------+------+--------+--------+
+| P48-LD-type | rd[5] | rs1[5] | vitp7[6] | vd | vs1 | vitp7[5:0] | *Rsvd* | 011111 |
++---------------+--------+--------+----------+-----+--------+-------------+------+--------+--------+
+| P48-ST-type |vitp7[6]| rs1[5] | rs2[5] | vs2 | vs1 | vitp7[5:0] | *Rsvd* | 011111 |
++---------------+--------+--------+----------+-----+--------+-------------+------+--------+--------+
+| P48-R-type | rd[5] | rs1[5] | rs2[5] | vs2 | vs1 | vitp6 | *Rsvd* | 011111 |
++---------------+--------+--------+----------+-----+--------+--------------------+--------+--------+
+| P48-I-type | rd[5] | rs1[5] | vitp7[6] | vd | vs1 | vitp7[5:0] | *Rsvd* | 011111 |
++---------------+--------+--------+----------+-----+--------+--------------------+--------+--------+
+| P48-U-type | rd[5] | *Rsvd* | *Rsvd* | vd | *Rsvd* | vitp6 | *Rsvd* | 011111 |
++---------------+--------+--------+----------+-----+--------+-------------+------+--------+--------+
+| P48-FR-type | rd[5] | rs1[5] | rs2[5] | vs2 | vs1 | *Rsvd* | vtp5 | *Rsvd* | 011111 |
++---------------+--------+--------+----------+-----+--------+-------------+------+--------+--------+
+| P48-FI-type | rd[5] | rs1[5] | vitp7[6] | vd | vs1 | vitp7[5:0] | *Rsvd* | 011111 |
++---------------+--------+--------+----------+-----+--------+-------------+------+--------+--------+
+| P48-FR4-type | rd[5] | rs1[5] | rs2[5] | vs2 | rs3[5] | vs3 [#fr4]_ | vtp5 | *Rsvd* | 011111 |
++---------------+--------+--------+----------+-----+--------+-------------+------+--------+--------+
.. [#fr4] Only vs2 and vs3 are included in the P48-FR4-type encoding
because there is not enough space for vs1 as well, and because