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author
lkcl
<lkcl@web>
Thu, 7 Sep 2023 11:02:56 +0000
(12:02 +0100)
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IkiWiki
<ikiwiki.info>
Thu, 7 Sep 2023 11:02:56 +0000
(12:02 +0100)
openpower/sv/po9_encoding/discussion.mdwn
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diff --git
a/openpower/sv/po9_encoding/discussion.mdwn
b/openpower/sv/po9_encoding/discussion.mdwn
index ccf780d34e348c31ad88af4e1cd35b103609be59..5891b59acc910abe473ae12e47c591efb374bb7b 100644
(file)
--- a/
openpower/sv/po9_encoding/discussion.mdwn
+++ b/
openpower/sv/po9_encoding/discussion.mdwn
@@
-11,6
+11,10
@@
a specific view to attaining high-speed massive-wide multi-issue decode
is a high priority. therefore especially length-detection must be kept
brutally simple.
is a high priority. therefore especially length-detection must be kept
brutally simple.
+**All evaluations point towards the original encoding proposed in the
+very first revision of [[ls001]] as it is clear that all other decoders
+are far too complex**. <a name="#sv_po9_ext2xx" />
+
# **superseded** alternative 32-64 encoding (1)
conflict to resolve: EXT90x and EXT232. they are indistinguishable.
# **superseded** alternative 32-64 encoding (1)
conflict to resolve: EXT90x and EXT232. they are indistinguishable.
@@
-102,7
+106,7
@@
Length detection:
else return 64
```
else return 64
```
-#
alternative hybrid 32-64 encoding (3) **current**
+#
**revoked** alternative hybrid 32-64 encoding (3)
aim of this idea is to attempt simplification of area identification
and length. the 55-bit area is eliminated and may only be reintroduced
aim of this idea is to attempt simplification of area identification
and length. the 55-bit area is eliminated and may only be reintroduced
@@
-272,7
+276,7
@@
test. Only EXT000-063 is not by a "process of elimination" (if ... return True)
return True
```
return True
```
-# alternative **no 32 encoding** 64-bit only (4) **current**
+# alternative **no 32 encoding** 64-bit only (4) **current**
<a name="#sv_po9_ext2xx" />
this idea gets even simpler. the 55-bit area is eliminated and may only be
reintroduced by sacrificing parts of EXT200-263. however doing so **WILL** damage
this idea gets even simpler. the 55-bit area is eliminated and may only be
reintroduced by sacrificing parts of EXT200-263. however doing so **WILL** damage