From: Luke Kenneth Casson Leighton <lkcl@lkcl.net>
Date: Wed, 22 May 2019 07:34:12 +0000 (+0100)
Subject: have to stop forward progress if issue is set
X-Git-Tag: div_pipeline~1999
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=a5f2aa7df4f43a1920248de851eb0c432b9bf452;p=soc.git

have to stop forward progress if issue is set
---

diff --git a/src/scoreboard/dependence_cell.py b/src/scoreboard/dependence_cell.py
index a45c5839..f509010c 100644
--- a/src/scoreboard/dependence_cell.py
+++ b/src/scoreboard/dependence_cell.py
@@ -51,7 +51,7 @@ class DepCell(Elaboratable):
         m.d.comb += l.r.eq(self.go_i)
 
         # Function Unit "Forward Progress".
-        m.d.comb += self.fwd_o.eq((l.q) & self.hazard_i)# & ~self.issue_i)
+        m.d.comb += self.fwd_o.eq((l.q) & self.hazard_i & ~self.issue_i)
 
         # Register Select. Activated on go read/write and *current* latch set
         m.d.comb += self.rsel_o.eq((cq | l.q) & self.go_i)