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diff --git a/simple_v_extension/sv_prefix_proposal/discussion.rst b/simple_v_extension/sv_prefix_proposal/discussion.rst
index 3adaa7e6bbc7f30a03713b65921c7acf4b258c8d..1c9a2e26ed954de335cacb04d8c3726138bf5f5e 100644 (file)
--- a/simple_v_extension/sv_prefix_proposal/discussion.rst
+++ b/simple_v_extension/sv_prefix_proposal/discussion.rst
@@ -234,3 +234,27 @@ a sequence of P48 and P64 ops.
 
 Can bit 60 of P64 be put to use (in all but the FR4 case)?
 
+
+# experiment VLtyp
+
+experiment 1:
+
++-----------+-------------+--------------+------------+----------------------+
+| VLtyp[11] | VLtyp[10:6] | VLtyp[5:3]   | VLtyp[2:0] | comment              |
++-----------+-------------+--------------+------------+----------------------+
+| 0         |  00000      | 000          |  000       | no change to VL/MVL  |
++-----------+-------------+--------------+------------+----------------------+
+| 0         |  imm        | 000          |  rs'!=0    |                      |
++-----------+-------------+--------------+------------+----------------------+
+| 0         |  imm        | rd'!=0       |  000       |                      |
++-----------+-------------+--------------+------------+----------------------+
+| 0         |  imm        | rd'!=0       |  rs'!=0    |                      |
++-----------+-------------+--------------+------------+----------------------+
+| 1         |  imm        | 000          |  000       |                      |
++-----------+-------------+--------------+------------+----------------------+
+| 1         |  imm        | 000          |  rs'!=0    |                      |
++-----------+-------------+--------------+------------+----------------------+
+| 1         |  imm        | rd'!=0       | 000        |                      |
++-----------+-------------+--------------+------------+----------------------+
+| 1         |  imm        | rd'!=0       |  rs'!=0    |                      |
++-----------+-------------+--------------+------------+----------------------+