diff --git a/test3d_t410/depends.txt b/test3d_t408/depends.txt
similarity index 100%
rename from test3d_t410/depends.txt
rename to test3d_t408/depends.txt
diff --git a/test3d_t408/emut408.lua b/test3d_t408/emut408.lua
new file mode 100644
index 0000000..c34d0c7
--- /dev/null
+++ b/test3d_t408/emut408.lua
@@ -0,0 +1,58 @@
+stab = {}
+stab.stack = {}
+stab.pc = 1
+stab.cins = 0
+mem = {}
+t408 = require "t408"
+
+while true do
+ io.write("*> ")
+ i=io.read()
+ it = {}
+ for s in i:gmatch("%S+") do it[#it+1] = s end
+ if it[1] == "quit" then
+  break
+ elseif it[1] == "peek" then
+  print(mem[tonumber(it[2])])
+ elseif it[1] == "poke" then
+  mem[tonumber(it[2])] = tonumber(it[3])
+ elseif it[1] == "push" then
+  stab.stack[#stab.stack+1] = tonumber(it[2])
+ elseif it[1] == "dumpstack" then
+  for k,v in ipairs(stab.stack) do print(k,v) end
+ elseif it[1] == "ppc" then
+  print(stab.pc)
+ elseif it[1] == "spc" then
+  stab.pc=tonumber(it[2])
+ elseif it[1] == "step" then
+  local scount = tonumber(it[2]) or 1
+  for i = 1, scount do
+   stab.cins = mem[stab.pc]
+   stab,rw,addr,val=t408.run(stab)
+   --print(rw,addr,val)
+   if rw == "halt" then print("Halted at "..tostring(stab.pc) )break end
+   if rw == "read" then
+    stab.stack[#stab.stack+1] = mem[addr]
+   elseif rw == "write" then
+    mem[addr] = val
+    if addr == 0 then io.write(string.char(val)) end
+   end
+  end
+ elseif it[1] == "debug" then
+  print(not t408.debug)
+  t408.debug = not t408.debug
+ elseif it[1] == "load" then
+  local f,e = io.open(it[2])
+  if f == nil then
+   print("Error: "..e)
+  else
+   local n = tonumber(it[3]) or 0
+   local c = f:read("*a")
+   f:close()
+   for v in c:gmatch("%d+") do
+    mem[n] = tonumber(v) or 0
+    n = n + 1
+   end
+  end
+ end
+end
diff --git a/test3d_t408/init.lua b/test3d_t408/init.lua
new file mode 100644
index 0000000..95091b3
--- /dev/null
+++ b/test3d_t408/init.lua
@@ -0,0 +1,198 @@
+local MEMSIZE=16
+local path = minetest.get_modpath(minetest.get_current_modname())
+local t408_mem, t408_stab = {},{}
+print("Looking for memory file at "..path.."/mem.dat")
+local f=io.open(path.."/mem.dat","rb")
+if f ~= nil then
+ local c = f:read("*a")
+ print("Found T408 memory file.")
+-- rawset(_G,"t408_mem",minetest.deserialize(c))
+ t408_mem = minetest.deserialize(c)
+ print("Contents: "..c)
+ f:close()
+end
+print("Looking for metadata file at "..path.."/stab.dat")
+local f=io.open(path.."/stab.dat","rb")
+if f ~= nil then
+ print("Found T408 metadata file.")
+ local c = f:read("*a")
+ t408_stab = minetest.deserialize(c)
+ print("Contents: "..c)
+ f:close()
+end
+local t408 = dofile(path.."/t408.lua")
+t408.debug = true
+print(type(_G.t408_mem))
+if not digiline then
+ print("Digilines not found.")
+ return
+end
+local oldprint=print
+local function print(...)
+ for k,v in ipairs({...}) do
+  oldprint("[Test3D:T408] "..tostring(v))
+ end
+end
+print("Loading.")
+
+local function t408_digiline_receive(pos, node, channel, msg)
+ local meta = minetest.get_meta(pos)
+ local nid = minetest.pos_to_string(pos)
+ local prea,preb = string.find(channel,meta:get_string("channel"))
+ print("Start channel: "..prea,"End channel: "..preb)
+ print("Recieved  (pre)"..tostring(msg).." from "..tostring(channel).." (device channel: "..tostring(meta:get_string("channel"))..")")
+ if prea == 1 then
+  --if string.sub(channel,1,meta:get_string("channel"):len()) == meta:get_string("channel") then
+--  local addr = tonumber(msg:sub(meta:get_string("channel"):len()+1))
+--  local addr = tonumber(channel)
+  print("Correct channel.")
+  local addr = tonumber(string.sub(channel,preb+1))
+  print(addr)
+  if addr > -1 and addr < 16 then
+   print("Recieved "..tostring(msg).." from "..tostring(channel).." for "..tostring(addr).." (device channel: "..tostring(meta:get_string("channel"))..")")
+   t408_mem[nid][addr+224] = tonumber(msg)
+  end
+ end
+ --end
+end
+print("Created T408 digiline function")
+
+local function t408_read(pos,addr)
+ if t408_mem[pos] == nil then return false end
+ print("Read: "..tostring(pos).." "..tostring(addr)..": "..tostring(t408_mem[pos][addr]))
+ return t408_mem[pos][addr] or 0
+end
+local function t408_write(pos,addr,val)
+ print(tostring(pos).." "..tostring(addr).." "..tostring(val))
+ if t408_mem[pos] == nil then return false end
+ t408_mem[pos][tonumber(addr)] = (tonumber(val)%256)
+ print("Write: "..tostring(pos).." "..tostring(addr)..": "..tostring(t408_mem[pos][addr]).." = "..tostring(val))
+ return true
+end
+
+local function t408_set_meta(pos)
+ local meta = minetest.get_meta(pos)
+ meta:set_string("channel","")
+ meta:set_string("state","running")
+ t408_mem[minetest.pos_to_string(pos)] = {}
+ t408_stab[minetest.pos_to_string(pos)] = {["ci"]=1,["pc"]=1,["stack"]={},["rstack"]={}}
+ print("Created T408 memory table with ID "..minetest.pos_to_string(pos))
+end
+minetest.register_node("test3d_t408:t408", {
+ description = "T408 Memory Node",
+ tiles = {{image="t408.png",animation={type="vertical_frames",aspect_w=16,aspect_h=16,length=1.8}}},
+ on_construct = t408_set_meta,
+ groups = {snappy=1,choppy=2,oddly_breakable_by_hand=2,flammable=3},
+ digiline = {
+  receptor = {},
+  effector = {
+   action = function (a,b,c,d) pcall(t408_digiline_receive,a,b,c,d) end
+  }
+ },
+ on_punch = function(pos,_,fields,sender)
+--  if fields.channel == nil then return end
+  local meta = minetest.get_meta(pos)
+--  fields.channel = fields.channel or ""
+--  meta:set_string("channel",fields.channel)
+  if meta:get_string("state") == "running" then
+   meta:set_string("state","halted")
+  else
+   meta:set_string("state","running")
+  end
+  print(meta:get_string("state"))
+ end
+})
+minetest.register_chatcommand("test3d-t408-read", {
+ params = "<node ID> <address>",
+ description = "Read the memory in a T408 node",
+ func = function(name,str)
+  local tArg = {}
+  for s in str:gmatch("%S+") do
+   tArg[#tArg+1] = s
+  end
+  local nid,addr = tArg[1],tArg[2]
+  print(nid,addr)
+  minetest.chat_send_player(name,tostring(t408_read(nid,tonumber(addr))))
+ end
+})
+minetest.register_chatcommand("test3d-t408-write", {
+ params = "<node ID> <address> <new value>",
+ description = "Read the memory in a T408 node",
+ func = function(name,str)
+  local tArg = {}
+  for s in str:gmatch("%S+") do
+   tArg[#tArg+1] = s
+  end
+  local nid,addr,val = tArg[1],tArg[2],tArg[3]
+  print(nid,addr,val)
+  minetest.chat_send_player(name,tostring(t408_write(nid,tonumber(addr),tostring(val))))
+ end
+})
+minetest.register_chatcommand("test3d-t408-set", {
+ params = "<node ID> <variable> <new value>",
+ description = "Set T408 variables.",
+ func = function(name,str)
+  local tArg = {}
+  for s in str:gmatch("%S+") do
+   tArg[#tArg+1] = s
+  end
+  local nid,addr,val = tArg[1],tArg[2],tArg[3]
+  local meta = minetest.get_meta(minetest.string_to_pos(nid))
+  meta:set_string(addr,tArg[3] or "")
+  print("Set "..nid.."'s "..addr.." to "..(tArg[3] or ""))
+ end
+})
+minetest.register_chatcommand("test3d-t408-dump", {
+ params = "<node ID> <address> <new value>",
+ description = "Read the memory in a T408 node",
+ func = function(name,nid,addr,val)
+  for k,v in ipairs(t408_mem) do
+   print(k,v)
+  end
+ end
+})
+ 
+print("T408 node registered")
+
+minetest.register_abm({
+ nodenames={"test3d_t408:t408"},
+ interval=1,
+ chance=1,
+ action = function(pos)
+  local meta = minetest.get_meta(pos)
+  if meta:get_string("state") == "running" then
+   local nid = minetest.pos_to_string(pos)
+   local stab,rw,addr,val = t408_stab[nid],nil,0,0
+   stab.cins = t408_mem[nid][stab.pc]
+   stab,rw,addr,val = t408.run(stab)
+   if rw == "read" then
+    stab.stack[#stab.stack+1] = t408_mem[nid][addr]
+   elseif rw == "preread" then
+    if addr > 223 and addr < 240 then
+     digiline:receptor_send(pos,digiline.rules.default,meta:get_string("channel")..string.format("%X",tonumber(addr)-224),"get")
+    end
+   elseif rw == "write" then
+    t408_mem[nid][addr] = tonumber(val)
+    print("Writing "..tostring(val).." to "..tostring(addr))
+    if addr > 223 and addr < 240 then
+     digiline:receptor_send(pos,digiline.rules.default,meta:get_string("channel")..string.format("%X",tonumber(addr)-224),tonumber(val))
+     print(string.char(val))
+    end
+   end
+   t408_stab[nid] = stab
+  end
+ end
+})
+
+minetest.register_on_shutdown(function()
+ local f=io.open(path.."/mem.dat","wb")
+ if f then
+  f:write(minetest.serialize(t408_mem))
+  f:close()
+ end
+ local f=io.open(path.."/stab.dat","wb")
+ if f then
+  f:write(minetest.serialize(t408_stab))
+  f:close()
+ end
+end)
diff --git a/test3d_t408/t408.lua b/test3d_t408/t408.lua
new file mode 100644
index 0000000..893074b
--- /dev/null
+++ b/test3d_t408/t408.lua
@@ -0,0 +1,97 @@
+local MAXADDR = 255
+local t = {}
+-- internal state
+--- program counter (pc)
+--- current instruction (ci) -- only passed from the environment to the emulator
+--- stack (stack)
+local function pop(s)
+ return table.remove(s,#s) or 0
+end
+local function push(s,v)
+ v=v or 0
+ s[#s+1] = v%256
+ if #s > 16 then
+  table.remove(s,1)
+ end
+end
+
+function t.run(stab,ov)
+ -- variables
+ local pc = stab.pc or 1
+ local ci = stab.cins or 0
+ if ov then
+  ci = tonumber(ov) or 0
+ end
+ local stack = stab.stack or {}
+ local rstack = stab.rstack or {}
+ local pci = 1
+ local rw = nil
+ local addr = 0
+ local dat = 0
+ -- instruction processing
+ if ci == 255 then -- ppc
+  push(stack,pc)
+ elseif ci == 254 then -- swp
+  a=pop(stack)
+  b=pop(stack)
+  push(stack,a)
+  push(stack,b)
+ elseif ci == 253 then -- read
+  rw = "read" -- terrible IPC
+  addr = pop(stack)
+ elseif ci == 252 then -- write
+  rw = "write"
+  addr = pop(stack)
+  dat = pop(stack)
+  --print("writing "..tostring(dat).." to "..tostring(addr))
+ elseif ci == 251 then -- add
+  push(stack,pop(stack)+pop(stack))
+ elseif ci == 250 then -- sub
+  push(stack,pop(stack)+pop(stack))
+ elseif ci == 249 then -- jmp
+  pc = pop(stack)
+  pci = 0
+ elseif ci == 248 then -- sez
+  if pop(stack) == 0 then
+   pci = pci + 1
+  end
+ elseif ci == 247 then -- jez
+  local a = pop(stack)
+  if pop(stack) == 0 then
+   pc = a
+   pci = 0
+  end
+ elseif ci == 246 then -- jsr
+  push(rstack,pc)
+  pc = pop(stack)
+  pci = 0
+ elseif ci == 245 then -- ret
+  pc = pop(rstack)
+ elseif ci == 244 then -- dup
+  local v = pop(stack)
+  push(stack,v)
+  push(stack,v)
+ elseif ci == 243 then -- drop
+  pop(stack)
+ elseif ci == 242 then -- hlt
+  rw = "halt"
+ elseif ci == 241 then -- prd
+  rw = "preread"
+  addr = pop(stack)
+ else
+  push(stack,ci)
+ end
+ -- return stuff
+ stab = {}
+ stab.pc = pc + pci -- increment pc
+ if stab.pc > MAXADDR then
+  stab.pc = 0
+ end
+ stab.cins = 0
+ stab.stack = stack
+ stab.rstack = rstack
+ if t.debug then print("t408: pc: "..tostring(stab.pc),"cins: "..tostring(ci),"tos: "..tostring(stab.stack[1]).." #s: "..tostring(#stab.stack),stab.rw,stab.addr,stab.dat) end
+ return stab, rw, addr, dat
+end
+
+return t
diff --git a/test3d_t408/textures/t408.png b/test3d_t408/textures/t408.png
new file mode 100644
index 0000000..e5bfed3
Binary files /dev/null and b/test3d_t408/textures/t408.png differ
diff --git a/test3d_t410/init.lua b/test3d_t410/init.lua
deleted file mode 100644
index 7d6f874..0000000
--- a/test3d_t410/init.lua
+++ /dev/null
@@ -1,30 +0,0 @@
-if not digiline then
- print("Digilines not found.")
- return
-end
-local oldprint=print
-local function print(...)
- for k,v in ipairs({...}) do
-  oldprint("[Test3D:T410] "..tostring(v))
- end
-end
-print("Loading.")
-
-local function t410_set_meta(pos)
- minetest.get_meta(pos):set_string("formspec","size[2,4]\nfield[0,1;2.9,1;addr;Address;]\nfield[0,2;2.9,1;data;Data;]\nbutton[0,3;2,1;write;Write]")
-end
-minetest.register_node("test3d_t410:t410", {
- description = "T410 Memory Access Console",
- tiles = {"t416-top.png","t416-top.png","t416-side.png","t416-side.png","t416-side.png","t416-side.png"},
- on_construct = t410_set_meta,
- groups = {snappy=1,choppy=2,oddly_breakable_by_hand=2,flammable=3},
- on_receive_fields = function(pos,_,fields,sender)
-  if fields.addr == nil then return end
-  digiline:receptor_send(pos, digiline.rules.default, fields.addr, tonumber(fields.data) or 0)
-  print("Set "..fields.addr.." to "..fields.data)
- end,
- digiline = {
-  receptor = {},
- },
-})
-print("T410 node registered")
diff --git a/test3d_t410/textures/t416-side.png b/test3d_t410/textures/t416-side.png
deleted file mode 100755
index 43b5703..0000000
Binary files a/test3d_t410/textures/t416-side.png and /dev/null differ
diff --git a/test3d_t410/textures/t416-top.png b/test3d_t410/textures/t416-top.png
deleted file mode 100755
index 05c2d9c..0000000
Binary files a/test3d_t410/textures/t416-top.png and /dev/null differ