(no commit message)

diff --git a/openpower/sv/int_fp_mv.mdwn b/openpower/sv/int_fp_mv.mdwn
index 9290753d75651836a30f88e59f08dbea4fc353d8..bbcc5b8e922ad8d66d775b6f6efcb6b5a4146a79 100644 (file)
--- a/openpower/sv/int_fp_mv.mdwn
+++ b/openpower/sv/int_fp_mv.mdwn
@@ -110,10 +110,8 @@ v3.1 Prefixed (`pfmvis` and `pfishmv`). If so it is recommended that
 Reinterprets `FI << 16` as a 32-bit float, which is then converted to a
 64-bit float and written to `FRT`.  This is equivalent to reinterpreting
 `FI` as a `BF16` and converting to 64-bit float.
-
 There is no need for an Rc=1 variant because this is an immediate loading
-instruction. This frees up one extra bit in the X-Form format for packing
-a full `BF16`.
+instruction.
 
 Example:
 
@@ -156,6 +154,12 @@ Pseudocode:
 
 `fishmv FRS, FI`
 
+DX-Form:
+
+|  0-5   | 6-10 | 11-15 | 16-25 | 26-30 | 31  | Form |
+|--------|------|-------|-------|-------|-----|-----|
+|  Major | FRS  | d1    | d0    | XO    | d2  | DX-Form |
+
 Strategically similar to how `oris` is used to construct
 32-bit Integers, an additional 16-bits of immediate is
 inserted into `FRS` to extend its accuracy to
@@ -163,16 +167,16 @@ a full FP32. If a prior `fmvis` instruction had been used to
 set the upper 16-bits of an FP32 value, `fishmv` contains the
 lower 16-bits.
 
-`fishmv` fits with DX-Form:
-
-|  0-5   | 6-10 | 11-15 | 16-25 | 26-30 | 31  | Form |
-|--------|------|-------|-------|-------|-----|-----|
-|  Major | FRS  | d1    | d0    | XO    | d2  | DX-Form |
+The key difference between using `li` and `oris` to construxt 32-bit
+GPR Immediates and `fishmv` is that the `fmvis` will have converted
+the `BF16` to FP64 (Double) format. This is taken into consideration
+as can be seen in the pseudocode below
 
 Pseudocode:
 
-    fp32 = FRS[0:15] || d0 || d1 || d2
-    FRS = Single_to_Double(fp32)
+    fp32 = Double_to_Single(FRS)
+    n = fp32[0:15] || d0 || d1 || d2
+    FRS = Single_to_Double(n)
 
 *This instruction performs a Read-Modify-Write. FRS is read, the additional
 16 bit immediate inserted, and the result also written to FRS*