# New 64-bit Instruction Encoding spaces
The following seven new areas are defined within Primary Opcode 9 (EXT009)
-as a new 64-bit encoding space, alongside EXT1xx.
+as a new 64-bit encoding space, alongside Primary Opcode 1
+(EXT1xx).
| 0-5 | 6 | 7 | 8-31 | 32| Description |
|-----|---|---|-------|---|------------------------------------|
-| PO | 0 | x | xxxx | 0 | `RESERVED2` (56-bit) |
+| PO | 0 | x | xxxx | 0 | `RESERVED2` (57-bit) |
| PO | 0 | 0 | !zero | 1 | SVP64Single:EXT232-263, or `RESERVED3` |
| PO | 0 | 0 | 0000 | 1 | Scalar EXT232-263 |
| PO | 0 | 1 | nnnn | 1 | SVP64:EXT232-263 |
|----------|----------------|--------|---------------|--------------|
|EXT000-063| 32 | yes | yes |yes |
|EXT100-163| 64 (?) | yes | no |no |
-|R3SERVED2 | 56 | N/A |not applicable |not applicable|
+|R3SERVED2 | 57 | N/A |not applicable |not applicable|
|EXT232-263| 32 | yes | yes |yes |
|RESERVED1 | 32 | N/A | no |no |