From: Luke Kenneth Casson Leighton <lkcl@lkcl.net>
Date: Thu, 9 May 2019 08:26:48 +0000 (+0100)
Subject: fix logic-bug in group picker
X-Git-Tag: div_pipeline~2094
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=2a1578b07a7e89d3e82ba05ec93542383344c45f;p=soc.git

fix logic-bug in group picker
---

diff --git a/src/scoreboard/group_picker.py b/src/scoreboard/group_picker.py
index 9518fdf9..333d5b1b 100644
--- a/src/scoreboard/group_picker.py
+++ b/src/scoreboard/group_picker.py
@@ -17,12 +17,13 @@ class PriorityPicker(Elaboratable):
 
         res = []
         for i in range(0, self.wid):
-            tmp = Signal(reset_less = True)
+            t = Signal(reset_less = True)
+            res.append(t)
             if i == 0:
-                m.d.comb += tmp.eq(self.i[0])
+                m.d.comb += t.eq(self.i[0])
             else:
-                m.d.comb += tmp.eq((~tmp) & self.i[i])
-            res.append(tmp)
+                m.d.comb += t.eq((~res[-2]) & self.i[i])
+            res.append(t)
         
         # we like Cat(*xxx).  turn lists into concatenated bits
         m.d.comb += self.o.eq(Cat(*res))