diff --git a/build.cfg b/build.cfg
index 3205c5b..74ab824 100755
--- a/build.cfg
+++ b/build.cfg
@@ -8,7 +8,8 @@ modules/lib/io.lua
 modules/drivers/vt52.lua
 modules/lib/print.lua
 modules/drivers/kbd.lua
-modules/drivers/net.lua
+modules/lib/cdlib.lua
+modules/net/copper.0.lua
 modules/lib/readline.lua
 modules/lib/shutil.lua
 modules/lib/sha256.lua
diff --git a/modules/lib/cdlib.lua b/modules/lib/cdlib.lua
new file mode 100644
index 0000000..23aeef0
--- /dev/null
+++ b/modules/lib/cdlib.lua
@@ -0,0 +1,31 @@
+-- cdlib by t20kdc, from https://github.com/20kdc/OC-Copper/blob/master/cdlib.lua
+-- modified for PsychOS by Izaya
+_G.cdlib = {}
+function cdlib.encodeName(name)
+ if name:len() > 256 then error("Bad name (l>256)") end
+ if name == "" then error("No name") end
+ return string.char(name:len() - 1) .. name
+end
+function cdlib.decodeName(message)
+ if message:len() < 2 then return end
+ local nlen = message:byte(1) + 1
+ local fnam = message:sub(2, nlen + 1)
+ if fnam:len() < nlen then return end
+ return fnam, message:sub(nlen + 2)
+end
+function cdlib.decodeNoHops(data)
+ local src, data = cdlib.decodeName(data)
+ if not src then return end
+ local dst, data = cdlib.decodeName(data)
+ if not dst then return end
+ return src, dst, data
+end
+function cdlib.encode(hops, src, dst, data)
+ return string.char(hops) .. cdlib.encodeName(src) .. cdlib.encodeName(dst) .. data
+end
+function cdlib.decode(d)
+ if d:len() < 3 then return end
+ local src, dst, data = cdlib.decodeNoHops(d:sub(2))
+ if not data then return end
+ return d:byte(1), src, dst, data
+end
diff --git a/modules/net/copper.0.lua b/modules/net/copper.0.lua
new file mode 100644
index 0000000..21f509d
--- /dev/null
+++ b/modules/net/copper.0.lua
@@ -0,0 +1,45 @@
+net = {}
+net.id = computer.address():sub(1,8)
+net.np = 4957
+net.tm = {}
+function net.send(id,po,msg) -- id, port, message
+ event.push("sendmsg",id,po,msg)
+end
+if cdlib then
+spawn("copper.0 daemon",function() print(pcall(function ()
+ local pt = {}
+ for a,t in component.list("modem") do
+  table.insert(net.tm,component.proxy(a))
+  component.proxy(a).open(net.np)
+ end
+ while true do
+  local ev = {event.pull()}
+  if ev[1] == "rsendmsg" then
+   dst,data = ev[2],ev[3]
+   for k,v in ipairs(net.tm) do
+    v.broadcast(net.np,"copper",cdlib.encode(0,net.id,dst,data))
+   end
+  elseif ev[1] == "modem_message" and ev[4] == net.np and ev[6] == "copper" then
+   local hops,src,dst,data = cdlib.decode(ev[7])
+   if not pt[ev[7]:sub(2)] then
+    pt[ev[7]:sub(2)] = os.time()
+    if dst == net.id then
+     event.push("net_rmsg",src,data)
+    else
+     for k,v in ipairs(net.tm) do
+      v.broadcast(net.np,cdlib.encode(hops+1,src,dst,data))
+     end
+    end
+   end
+  end
+  if #pt > 63 then
+   local cot = os.time()
+   for k,v in pairs(pt) do
+    if v < cot-5 then
+     pt[k] = nil
+    end
+   end
+  end
+ end
+end)) end)
+end