From: lkcl <lkcl@web>
Date: Thu, 5 May 2022 15:14:11 +0000 (+0100)
Subject: (no commit message)
X-Git-Tag: opf_rfc_ls005_v1~2444
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=68e613bb8a6d1f65daac493405cc5e4011e52a66;p=libreriscv.git

---

diff --git a/openpower/sv/SimpleV_rationale.mdwn b/openpower/sv/SimpleV_rationale.mdwn
index 13673403d..cf6851669 100644
--- a/openpower/sv/SimpleV_rationale.mdwn
+++ b/openpower/sv/SimpleV_rationale.mdwn
@@ -75,9 +75,11 @@ compiler support, and even longer to get the software ecosystem up and
 running.
 
 Which ISAs, therefore, have or have had, at one point in time, a decent Software
-Ecosystem?
+Ecosystem? Debian supports most of these including s390:
 
 * SPARC, created by Sun Microsystems and all but abandoned by Oracle.
+  Gaisler Research maintains the LEON Open Source Cores but with Oracle's
+  reputation nobody wants to go near SPARC.
 * MIPS, created by SGI and only really commonly used in Network switches.
   Exceptions: Ingenic with embedded CPUs,
   and China ICT with the Loongson supercomputers.
@@ -104,5 +106,12 @@ Ecosystem?
   multi-billion-unit mass volume markets that almost nobody
   knows anything about. Included for completeness.
 
+In order of least controlled to most controlled, the viable
+candidates for further advancement are:
 
-
+* OpenRISC 1200, not controlled or restricted by anyone. no patent
+  protection.
+* RISC-V, touted as "Open" but actually strictly controlled under
+  Trademark License: too new to have adequate patent pool protection,
+  as evidenced by multiple adopters having been hit by patent lawsuits.
+*