From: Luke Kenneth Casson Leighton <lkcl@lkcl.net>
Date: Sun, 8 Apr 2018 12:08:36 +0000 (+0100)
Subject: add on-top-of section
X-Git-Tag: convert-csv-opcode-to-binary~5722
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=4789391217efbc2415b3d75c63d753fc9d6a0ae0;p=libreriscv.git

add on-top-of section
---

diff --git a/simple_v_extension.mdwn b/simple_v_extension.mdwn
index 4e8059840..9111087d7 100644
--- a/simple_v_extension.mdwn
+++ b/simple_v_extension.mdwn
@@ -695,6 +695,19 @@ translates effectively to:
 | URSUB8 rt, ra, rb  | Unsigned Halving sub      | |
 
 
+# Impementing V on top of Simple-V
+
+* Number of Offset CSRs extends from 2
+* Extra register file: vector-file
+* Setup of Vector length and bitwidth CSRs now can specify vector-file
+  as well as integer or float file.
+* TODO
+
+# Implementing P (renamed to DSP) on top of Simple-V
+
+* Implementors indicate chosen bitwidth support in Vector-bitwidth CSR
+  (caveat: anything not specified drops through to software-emulation / traps)
+* TODO
 
 # References