From 20efd9f948e67d17b3718bb4c4a6b9175ab8aadb Mon Sep 17 00:00:00 2001 From: Luke Kenneth Casson Leighton Date: Sun, 17 Feb 2019 14:07:33 +0000 Subject: [PATCH] add TODO comment --- src/add/nmigen_add_experiment.py | 3 +++ 1 file changed, 3 insertions(+) diff --git a/src/add/nmigen_add_experiment.py b/src/add/nmigen_add_experiment.py index 8f075cf1..a751ea2e 100644 --- a/src/add/nmigen_add_experiment.py +++ b/src/add/nmigen_add_experiment.py @@ -115,6 +115,9 @@ class FPADD(FPBase): # This one however (single-cycle) will do the shift # in one go. + # XXX TODO: the shifter used here is quite expensive + # having only one would be better + ediff = Signal((len(a.e), True)) ediffr = Signal((len(a.e), True)) m.d.comb += ediff.eq(a.e - b.e) -- 2.30.2