From: lkcl <lkcl@web>
Date: Tue, 6 Jun 2023 17:02:29 +0000 (+0100)
Subject: (no commit message)
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=7aaeaaf8f6769b19622567a2a19970e5dd2fb6fa;p=libreriscv.git

---

diff --git a/openpower/sv/po9_encoding/discussion.mdwn b/openpower/sv/po9_encoding/discussion.mdwn
new file mode 100644
index 000000000..5adc3044f
--- /dev/null
+++ b/openpower/sv/po9_encoding/discussion.mdwn
@@ -0,0 +1,11 @@
+# alternative 32-64 encoding
+
+| 0-5 | 7 | 8-31      | 6 | 32|33-63|Description                        |
+|-----|---|-------|---|-----|-----------------------------------|
+| PO9 | x | xxxx  | 0 |  0 | xxxx|  `RESERVED2` (57-bit) |
+| PO9 | 0 | !zero | 0 |  1 | DWd | SVP64Single:EXT232-263, or `RESERVED3` |
+| PO9 | 0 | 0000  | 0 |  1 | DWd | Scalar EXT232-263               |
+| PO9 | 1 | nnnn  | 0 |  1 | DWd | SVP64:EXT232-263     |
+| PO9 | 0 | 0000  | 1 |  x | xxxx| `RESERVED1` (32-bit) |
+| PO9 | 0 | !zero | 1 |  n | DWd | SVP64Single:EXT000-063 or `RESERVED4` |
+| PO9 | 1 | nnnn  | 1 |  n | DWd | SVP64:EXT000-063       |