TODO
aim of this idea is to attempt simplification of area identification
-and length.
+and length. the 55-bit area is eliminated but may be reintroduced.
```
-|0-5| 6-28|29 30 31|32|33-36|37 | 38-60 | 61-63 | Description |
-|---|-----|--------|--|-----|---|-------|-------|------------------|
-|PO9| rm0 | 1 0 0 | 0 0000 rm1| xxxx | 000 | SVP64:EXT900 |
-|PO9|!ZERO| 1 0 0 | 0 1000 1 | xxxx | 000 | SSingle:EXT900 |
-|PO9| xxx | 1 0 0 | 0 !zero0 | xxxx | !zero1| 55-bit RESERVED |
-|PO9| xxxx | 0 0 | 32-bit EXT900 |
-|PO9| !ZERO | 1 0 | 0 | DWi | SSingle:EXT232-263 |
-|PO9| 0000 | 1 0 | 0 | DWi | Scalar EXT232-263 |
-|PO9| nnnn | 1 0 | 1 | DWi | SVP64:EXT232-263 |
+|0-5| 6-29 |30 31|32|33-36|37 | 38-61 | 62-63 | Description |
+|---|--------|-----|--|-----|---|-------|-------|------------------|
+|PO9| xxxx | 0 0 | (next new instruction) | 32-bit EXT900 |
+|PO9| 0000 | 1 0 | 0 1000 1 | xxxx | 00 | RESERVED |
+|PO9| !ZERO | 1 0 | 0 1000 1 | xxxx | 00 | SSingle:EXT900 |
+|PO9| nnnn | 1 0 | 0 1000 1 | xxxx | 01 | SVP64:EXT900 |
+|PO9| xxxx | 1 0 | 0 1000 1 | xxxx | 10 | RESERVED |
+|PO9| xxxx | 1 0 | 0 1000 1 | xxxx | 11 | RESERVED |
+|PO9| !ZERO | 1 0 | 0 | !PO9 | xxxx | SSingle:EXT232-263 |
+|PO9| 0000 | 1 0 | 0 | !PO9 | xxxx | Scalar EXT232-263 |
+|PO9| nnnn | 1 0 | 1 | !PO9 | xxxx | SVP64:EXT232-263 |
|PO9| 0000 | 0 1 | Defined Word-instruction | 32-bit Unvec in 64b|
|PO9| !ZERO | 0 1 | Defined Word-instruction | SSingle:EXT000-063 |
|PO9| nnnn | 1 1 | Defined Word-instruction | SVP64:EXT000-063 |