From b78bd51050e432bde2cfedf6a5f778de4459f91e Mon Sep 17 00:00:00 2001
From: Luke Kenneth Casson Leighton <lkcl@lkcl.net>
Date: Mon, 24 Feb 2020 18:26:30 +0000
Subject: [PATCH] make example as close to adder benchmark as possible

---
 experiments4/Makefile            |  4 ++--
 experiments4/add.py              |  6 +++---
 experiments4/coriolis2/ioring.py | 19 +++++++++----------
 3 files changed, 14 insertions(+), 15 deletions(-)

diff --git a/experiments4/Makefile b/experiments4/Makefile
index 8addfb5..d059192 100755
--- a/experiments4/Makefile
+++ b/experiments4/Makefile
@@ -7,8 +7,8 @@
            YOSYS_FLATTEN = Yes
                      CHIP = chip
                      CORE = add
-                   MARGIN = 5
-                  BOOMOPT = -A
+                   MARGIN = 2
+                  BOOMOPT =  # -A
                   BOOGOPT =
                   LOONOPT =
                 NSL2VHOPT = -vasy # -split -p
diff --git a/experiments4/add.py b/experiments4/add.py
index 83e7a72..68aecc1 100644
--- a/experiments4/add.py
+++ b/experiments4/add.py
@@ -6,11 +6,11 @@ class ADD(Elaboratable):
     def __init__(self, width):
         self.a   = Signal(width)
         self.b   = Signal(width)
-        self.o   = Signal(width)
+        self.f   = Signal(width)
 
     def elaborate(self, platform):
         m = Module()
-        m.d.comb += self.eq(self.a + self.b)
+        m.d.sync += self.f.eq(self.a + self.b)
         return m
 
 
@@ -21,4 +21,4 @@ def create_ilang(dut, ports, test_name):
 
 if __name__ == "__main__":
     alu = ADD(width=4)
-    create_ilang(alu, [alu.a, alu.b, alu.o], "add")
+    create_ilang(alu, [alu.a, alu.b, alu.f], "add")
diff --git a/experiments4/coriolis2/ioring.py b/experiments4/coriolis2/ioring.py
index 0951b57..cc8a055 100644
--- a/experiments4/coriolis2/ioring.py
+++ b/experiments4/coriolis2/ioring.py
@@ -4,24 +4,23 @@ from helpers import l, u, n
 
 def pad_nums(s, sep="_"):
     res = []
-    for i in range(16):
+    for i in range(4):
         res.append("%s%s%d" % (s, sep, i))
     return res
 
 a_pads = pad_nums("a")
-o_pads = pad_nums("o")
+o_pads = pad_nums("f")
 
 chip = { 'pads.ioPadGauge' : 'pxlib'
-        , 'pads.south'      :  a_pads[:8] + ["p_vddick_0", "p_vssick_0" ] + \
-                               a_pads[8:]
+        , 'pads.south'      :  a_pads[:2] + ["p_vddick_0", "p_vssick_0" ] + \
+                               a_pads[2:]
        , 'pads.east'       : pad_nums("b")
-       , 'pads.north'      : o_pads[:8] + ["p_vddeck_0", "p_vsseck_0" ] + \
-                             o_pads[8:]
-       , 'pads.west'       : [ "op", 
-                                "p_clk_0", 
+       , 'pads.north'      : o_pads[:2] + ["p_vddeck_0", "p_vsseck_0" ] + \
+                             o_pads[2:]
+       , 'pads.west'       : [ "p_clk_0",
                                "rst", 
                              ]
-       , 'core.size'       : ( l(3000), l(3000) )
-       , 'chip.size'       : ( l(5000), l(5000) )
+       , 'core.size'       : ( l(1000), l(1000) )
+       , 'chip.size'       : ( l(2500), l(2500) )
        , 'chip.clockTree'  : True
        }
-- 
2.30.2