diff --git a/icebreaker/perbitoe/.gitignore b/icebreaker/perbitoe/.gitignore
new file mode 100644
index 0000000..86d98e8
--- /dev/null
+++ b/icebreaker/perbitoe/.gitignore
@@ -0,0 +1,4 @@
+branch/
+origin/
+perbitoe/
+
diff --git a/icebreaker/perbitoe/Makefile b/icebreaker/perbitoe/Makefile
new file mode 100644
index 0000000..988c116
--- /dev/null
+++ b/icebreaker/perbitoe/Makefile
@@ -0,0 +1,27 @@
+all: origin branch perbitoe diff
+
+origin: singlebitoe.py
+	python3 singlebitoe.py /home/tom/git/m-labs/migen origin
+
+branch: singlebitoe.py
+	python3 singlebitoe.py /home/tom/git/TomKeddie/migen branch
+
+perbitoe: perbitoe.py
+	python3 perbitoe.py /home/tom/git/TomKeddie/migen perbitoe
+
+clean:
+	rm -rf origin branch perbitoe diff-*
+
+diff: diff_origin_branch diff_origin_perbitoe
+
+diff_origin_branch:
+	diff origin/arty_a7_build/top.v     branch/arty_a7_build/
+	diff origin/icebreaker_build/top.v  branch/icebreaker_build/
+	diff origin/papilio_pro_build/top.v branch/papilio_pro_build/
+	diff origin/versaecp55g_build/top.v branch/versaecp55g_build/
+
+diff_origin_perbitoe:
+	-diff origin/arty_a7_build/top.v     perbitoe/arty_a7_build/
+	-diff origin/icebreaker_build/top.v  perbitoe/icebreaker_build/
+	-diff origin/papilio_pro_build/top.v perbitoe/papilio_pro_build/
+	-diff origin/versaecp55g_build/top.v perbitoe/versaecp55g_build/
diff --git a/icebreaker/perbitoe/perbitoe.py b/icebreaker/perbitoe/perbitoe.py
new file mode 100644
index 0000000..b74b3f1
--- /dev/null
+++ b/icebreaker/perbitoe/perbitoe.py
@@ -0,0 +1,60 @@
+import sys
+
+if len(sys.argv) != 3:
+    print("Usage:   {} <migenpath> <builddir>".format(sys.argv[0]))
+    sys.exit(-1)
+
+sys.path.append(sys.argv[1])
+build_dir=sys.argv[2]
+
+from migen import *
+from migen.build.generic_platform import Pins
+from migen.build.platforms import icebreaker, arty_a7, papilio_pro, versaecp55g
+
+_icebreaker_connector = [
+    ("io", 0, Pins("PMOD1A:0", "PMOD1A:1")),
+]
+
+_papilio_pro_connector = [
+    ("io", 0, Pins("A:0", "A:1")),
+]
+
+_arty_a7_connector = [
+    ("io", 0, Pins("pmoda:0", "pmoda:1")),
+]
+
+_versaecp55g_connector = [
+    ("io", 0, Pins("X3:4", "X3:5")),
+]
+    
+class module(Module):
+    def __init__(self, plat):
+        pads = plat.request("io")
+        counter = Signal(26)
+        t = TSTriple(len(pads), per_bit_oe=True)
+        self.comb += t.o.eq(counter[25:23:-1])
+        self.comb += t.oe.eq(counter[25:23:-1])
+        self.specials += t.get_tristate(pads)
+        self.sync += If(t.i[0] | t.i[1], counter.eq(0)).Else(counter.eq(counter + 1))
+
+plat_icebreaker = icebreaker.Platform()
+plat_icebreaker.add_extension(_icebreaker_connector)
+plat_icebreaker.build(module(plat_icebreaker), run=False, build_dir=build_dir + "/icebreaker_build")
+
+plat_papilio_pro = papilio_pro.Platform()
+plat_papilio_pro.add_extension(_papilio_pro_connector)
+plat_papilio_pro.build(module(plat_papilio_pro), run=False, build_dir=build_dir + "/papilio_pro_build")
+
+plat_versaecp55g = versaecp55g.Platform()
+plat_versaecp55g.add_extension(_versaecp55g_connector)
+plat_versaecp55g.build(module(plat_versaecp55g), run=False, build_dir=build_dir + "/versaecp55g_build")
+
+plat_arty_a7 = arty_a7.Platform()
+plat_arty_a7.add_extension(_arty_a7_connector)
+plat_arty_a7.build(module(plat_arty_a7), run=False, build_dir=build_dir + "/arty_a7_build")
+
+
+
+
+
+
diff --git a/icebreaker/perbitoe/singlebitoe.py b/icebreaker/perbitoe/singlebitoe.py
new file mode 100644
index 0000000..5d79608
--- /dev/null
+++ b/icebreaker/perbitoe/singlebitoe.py
@@ -0,0 +1,60 @@
+import sys
+
+if len(sys.argv) != 3:
+    print("Usage:   {} <migenpath> <builddir>".format(sys.argv[0]))
+    sys.exit(-1)
+
+sys.path.append(sys.argv[1])
+build_dir=sys.argv[2]
+
+from migen import *
+from migen.build.generic_platform import Pins
+from migen.build.platforms import icebreaker, arty_a7, papilio_pro, versaecp55g
+
+_icebreaker_connector = [
+    ("io", 0, Pins("PMOD1A:0", "PMOD1A:1")),
+]
+
+_papilio_pro_connector = [
+    ("io", 0, Pins("A:0", "A:1")),
+]
+
+_arty_a7_connector = [
+    ("io", 0, Pins("pmoda:0", "pmoda:1")),
+]
+
+_versaecp55g_connector = [
+    ("io", 0, Pins("X3:4", "X3:5")),
+]
+    
+class module(Module):
+    def __init__(self, plat):
+        pads = plat.request("io")
+        counter = Signal(26)
+        t = TSTriple(len(pads))
+        self.comb += t.o.eq(counter[25:23:-1])
+        self.comb += t.oe.eq(counter[25:23:-1])
+        self.specials += t.get_tristate(pads)
+        self.sync += If(t.i[0] | t.i[1], counter.eq(0)).Else(counter.eq(counter + 1))
+
+plat_icebreaker = icebreaker.Platform()
+plat_icebreaker.add_extension(_icebreaker_connector)
+plat_icebreaker.build(module(plat_icebreaker), run=False, build_dir=build_dir + "/icebreaker_build")
+
+plat_papilio_pro = papilio_pro.Platform()
+plat_papilio_pro.add_extension(_papilio_pro_connector)
+plat_papilio_pro.build(module(plat_papilio_pro), run=False, build_dir=build_dir + "/papilio_pro_build")
+
+plat_versaecp55g = versaecp55g.Platform()
+plat_versaecp55g.add_extension(_versaecp55g_connector)
+plat_versaecp55g.build(module(plat_versaecp55g), run=False, build_dir=build_dir + "/versaecp55g_build")
+
+plat_arty_a7 = arty_a7.Platform()
+plat_arty_a7.add_extension(_arty_a7_connector)
+plat_arty_a7.build(module(plat_arty_a7), run=False, build_dir=build_dir + "/arty_a7_build")
+
+
+
+
+
+