From: Luke Kenneth Casson Leighton <lkcl@lkcl.net>
Date: Wed, 27 Mar 2019 23:18:04 +0000 (+0000)
Subject: add comments
X-Git-Tag: ls180-24jan2020~1457
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=2656ba60457fb14bf07680668504fd3f2f6979f8;p=ieee754fpu.git

add comments
---

diff --git a/src/add/test_inout_mux_pipe.py b/src/add/test_inout_mux_pipe.py
index 9e2b1026..95a2d0a2 100644
--- a/src/add/test_inout_mux_pipe.py
+++ b/src/add/test_inout_mux_pipe.py
@@ -232,13 +232,13 @@ class TestMuxOutPipe(MuxUnbufferedPipeline):
 class TestInOutPipe:
     def __init__(self, num_rows=4):
         self.num_rows = num_rows
-        self.inpipe = TestPriorityMuxPipe(num_rows)
-        self.pipe1 = PassThroughPipe()
-        self.pipe2 = PassThroughPipe()
-        self.outpipe = TestMuxOutPipe(num_rows)
+        self.inpipe = TestPriorityMuxPipe(num_rows) # fan-in (combinatorial)
+        self.pipe1 = PassThroughPipe()              # stage 1 (clock-sync)
+        self.pipe2 = PassThroughPipe()              # stage 2 (clock-sync)
+        self.outpipe = TestMuxOutPipe(num_rows)     # fan-out (combinatorial)
 
-        self.p = self.inpipe.p
-        self.n = self.outpipe.n
+        self.p = self.inpipe.p  # kinda annoying,
+        self.n = self.outpipe.n # use pipe in/out as this class in/out
         self._ports = self.inpipe.ports() + self.outpipe.ports()
 
     def elaborate(self, platform):