clarify reserved areas

diff --git a/openpower/sv/rfc/Makefile b/openpower/sv/rfc/Makefile
index 2c58d4968d3ed3da2e00d11c2e335d2ddbf93f88..8771c275b9ed7d0d73386d299fbbd1a6b0aa7492 100644 (file)
--- a/openpower/sv/rfc/Makefile
+++ b/openpower/sv/rfc/Makefile
@@ -11,6 +11,7 @@ all: ls001.pdf ls002.pdf ls003.pdf ls004.pdf ls005.pdf ls006.pdf ls007.pdf
                -V linkcolor=blue \
                -f markdown $*.mdwn \
                -s --self-contained \
+               --mathjax \
                -o $*.pdf
 
 upload:

diff --git a/openpower/sv/rfc/ls010.mdwn b/openpower/sv/rfc/ls010.mdwn
index 78f5017778ca2253daa3f00ccddcb818866a1f22..7301f9dfbc2217b57549e5aa4ee337c10c18fd22 100644 (file)
--- a/openpower/sv/rfc/ls010.mdwn
+++ b/openpower/sv/rfc/ls010.mdwn
@@ -449,16 +449,27 @@ Encoding spaces and their potential are illustrated:
 | Encoding | Available bits | Scalar | Vectoriseable | SVP64Single  |
 |----------|----------------|--------|---------------|--------------|
 |EXT000-063| 32             | yes    | yes           |yes           |
-|EXT100-163| 64 (?)         | yes    | no            |no            |
-|RESERVED2 | 57             | N/A    |not applicable |not applicable|
+|EXT100-163| 64             | yes    | no            |no            |
+|R3SERVED2 | 57             | N/A    |not applicable |not applicable|
 |EXT232-263| 32             | yes    | yes           |yes           |
 |RESERVED1 | 32             | N/A    | no            |no            |
 
-Prefixed-Prefixed (96-bit) instructions are prohibited. RESERVED2 presently
-remains unallocated as of yet and therefore its potential is not yet defined
-(Not Applicable). RESERVED1 is also unallocated at present, but it is
-known in advance that the area is UnVectoriseable and also cannot be
-Prefixed with SVP64Single.
+Notes:
+
+* Prefixed-Prefixed (96-bit) instructions are prohibited. EXT1xx is
+  thus inherently UnVectoriseable as the EXT1xx prefix is 32-bit
+  on top of an SVP64 prefix which is 32-bit on top of a Defined Word
+  and the complexity at the Decoder becomes too great for High
+  Performance Multi-Issue systems.
+* RESERVED2 presently remains unallocated as of yet and therefore its
+  potential is not yet defined (Not Applicable).
+* RESERVED1 is also unallocated at present, but it is known in advance
+  that the area is UnVectoriseable and also cannot be Prefixed with
+  SVP64Single.
+* Considerable care is needed both on Architectural Resource Allocation
+  as well as instruction design itself.  Once an instruction is allocated
+  in an UnVectoriseable area it can never be Vectorised without providing
+  an entirely new Encoding.
 
 # Remapped Encoding (`RM[0:23]`)