From: Luke Kenneth Casson Leighton <lkcl@lkcl.net>
Date: Sat, 9 Mar 2019 22:23:14 +0000 (+0000)
Subject: put inversion of write-enable into its own signal
X-Git-Tag: div_pipeline~2323
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=cc6e56cfe38e4d9a2434275d19bea17dbb70d15a;p=soc.git

put inversion of write-enable into its own signal
---

diff --git a/TLB/src/Cam.py b/TLB/src/Cam.py
index e4340fcd..937811fb 100644
--- a/TLB/src/Cam.py
+++ b/TLB/src/Cam.py
@@ -70,12 +70,16 @@ class Cam():
             self.decoder.n.eq(0)
         ]
 
+        # XXX change name of write_enable interface to write_enable_n ?
+        wen = Signal(reset_less=True)
+        m.d.comb += wen.eq(~self.write_enable)
+
         with m.If(self.enable):
             # Set the key value for every CamEntry
             for index in range(self.cam_size):
 
                 # Read Operation
-                with m.If(~self.write_enable):
+                with m.If(wen):
                     m.d.comb += entry_array[index].command.eq(1)
 
                 # Write Operation