re-reserve bit in setvl -- needed for extending registers:

[libreriscv.git] / openpower.mdwn

diff --git a/openpower.mdwn b/openpower.mdwn
index 0832f97fd2509c80d4b2d9d55c05fdaa915ae079..69f7ee449a9fb9b5fc54f6d44d6c77280005ad7a 100644 (file)
--- a/openpower.mdwn
+++ b/openpower.mdwn
@@ -1,23 +1,36 @@
 # OpenPOWER
 
 In the late 1980s [[!wikipedia IBM]] developed a POWER family of processors.
-This evolved to a specification known as the Power ISA. In 2019 IBM made the Power ISA [[!wikipedia Open_source]] to be looked after by the existing [[!wikipedia OpenPOWER_Foundation]]. Here is a longer history of [[!wikipedia IBM_POWER_microprocessors]].
+This evolved to a specification known as the POWER ISA. In 2019 IBM made the POWER ISA [[!wikipedia Open_source]], to be looked after by the existing [[!wikipedia OpenPOWER_Foundation]]. Here is a longer history of [[!wikipedia IBM_POWER_microprocessors]]. These IBM proprietary processors 
+happen to implement what is now known as the POWER ISA. The names
+POWER8, POWER9, POWER10 etc. are product designations equivalent to Intel
+i5, i7, i9 etc. and are frequently conflated with versions of the POWER ISA (v2.07, v3.0c, v3.1b).
 
-Libre-SOC is basing its [[Simple-V Vectorisation|sv]] CPU extensions on OpenPOWER because it wants to be able to specify a machine that can be completely trusted, and because OpenPOWER is designed for high performance.
+Libre-SOC is basing its [[Simple-V Vectorisation|sv]] CPU extensions on POWER ISA, because it wants to be able to specify a machine that can be completely trusted, and because POWER, thanks to IBM's involvement,
+is designed for high performance.
+
+See wikipedia page 
+<https://en.m.wikipedia.org/wiki/Power_ISA>
+
+very useful resource describing all assembly instructions
+<https://www.ibm.com/docs/en/aix/7.1?topic=reference-instruction-set>
 
 # Evaluation
 
 EULA released! looks good.
+<https://openpowerfoundation.org/final-draft-of-the-power-isa-eula-released/>
 
-Links
+# Links
 
 * OpenPOWER Membership
-  <https://openpowerfoundation.org/membership/how-to-join/membership-kit-9-27-16-4/>
+  <https://openpowerfoundation.org/join/>
 * OpenPower HDL Mailing list <http://lists.mailinglist.openpowerfoundation.org/mailman/listinfo/openpower-hdl-cores>
 * [[openpower/isatables]]
+* [[openpower/whitepapers]]
 * [[openpower/isa]] - pseudo-code extracted from POWER V3.0B PDF spec
 * [[openpower/gem5]]
 * [[openpower/sv]]
+* [[openpower/opcode_regs_deduped]]
 * [[openpower/simd_vsx]]
 * [[openpower/ISA_WG]] - OpenPOWER ISA Working Group
 * [[openpower/pearpc]]
@@ -52,6 +65,7 @@ Summary
 * Opcode 4 Signal Processing (SPE)
 * Opcode 4 Vectors or Opcode 60 VSX (600+ additional instructions)
 * Avoidable legacy opcodes
+* SIMD. it's awful.
 
 # SimpleV