Thus, logically, we may set the following rule:
* When a 5-bit CR Result field is used in an instruction, the
- `inv, VLi and RC1` variant of Data-Dependent Fail-First
+ 5-bit variant of Data-Dependent Fail-First
must be used. i.e. the bit of the CR field to be tested is
- the one that has just been modified by the operation.
-* When a 3-bit CR Result field is used the `inv CRbit` variant
- must be used in order to select which CR Field bit shall
+ the one that has just been modified (created) by the operation.
+* When a 3-bit CR Result field is used the 3-bit variant
+ must be used, providing as it does the missing `CRbit`
+ in order to select which CR Field bit of the result shall
be tested (EQ, LE, GE, SO)
The reason why the 3-bit CR variant needs the additional CR-bit