"""]]
When 16xil is 0b111, this is the "Extended" Format, using the >= 192-bit
-RISC-V ISA format. Note that the length is 96+16\*nnnnnn, not 192+
+RISC-V ISA format. Note that the length is 96+16\*nnnnn, not 192+
| base+5 ... base+3 | base+1 | base | no. of bits |
| ------ ----------------- | | ---------------- | ------------- |
-| ..xxxx xxxxxxxxxxxxxxxx | | x111xxxxx1111111 | 96+16\*nnnnnn |
+| ..xxxx xxxxxxxxxxxxxxxx | | x111xxxxx1111111 | 96+16\*nnnnn |
| {ops}{Pred}{Reg}{VL Block}| VBLOCK2 | VBLOCK Prefix | |
VBLOCK2 extends the VBLOCK fields:
-| 15:13 | 12:11 | 10:9 | 8:6 | 5:0 |
+| 15:12 | 11:10 | 9:8 | 7:5 | 4:0 |
| ----- | ----- | ---- | --- | ---- |
| rsvd | rplen2 | pplen2 | swlen | ilen |
* swlen specifies the number of "swizzle" blocks
* rplen2 extends rplen by 2 bits
* pplen2 extends pplen by 2 bits
+* 4 bits are reserved for additional tables (Matrices?)