+For a 3-bit operand (e.g. BFA):
+
+| Value | Mode | Range/Inc | 6..3 | 2..0 |
+|-------|------|---------------|-----------| --------|
+| 000 | Scalar | `CR0-CR7`/1 | 0b0000 | BFA |
+| 001 | Scalar | `CR8-CR15`/1 | 0b0001 | BFA |
+| 010 | Scalar | `CR16-CR23`/1 | 0b0010 | BFA |
+| 011 | Scalar | `CR24-CR31`/1 | 0b0011 | BFA |
+| 100 | Vector | `CR0-CR112`/16 | BFA 0 | 0b000 |
+| 101 | Vector | `CR4-CR116`/16 | BFA 0 | 0b100 |
+| 110 | Vector | `CR8-CR120`/16 | BFA 1 | 0b000 |
+| 111 | Vector | `CR12-CR124`/16 | BFA 1 | 0b100 |
+