mention variable register file length

diff --git a/simple_v_extension/specification.mdwn b/simple_v_extension/specification.mdwn
index edd50ed2f0472127d7d52c56657f9a014034c9ec..f8ed0cabe5ef249f469fc266253d3f677f4c0d8e 100644 (file)
--- a/simple_v_extension/specification.mdwn
+++ b/simple_v_extension/specification.mdwn
@@ -1659,3 +1659,9 @@ answer: they're not vectorised, so not a problem
 
 TODO: update elwidth to be default / 8 / 16 / 32
 
+---
+
+TODO: document different lengths for INT / FP regfiles, and provide
+as part of info register. 00=32, 01=64, 10=128, 11=reserved.
+
+