diff --git a/installer_dat/package_list.lua b/installer_dat/package_list.lua
index 51a5d0a..0d2489c 100644
--- a/installer_dat/package_list.lua
+++ b/installer_dat/package_list.lua
@@ -10,6 +10,7 @@
 	{name="minitel", cat="net", path="lib/net_minitel.zy2l"},
 	--{name="vdev", cat="util", path="mods/util_vdev.zy2m"},
 	{name="menu", cat="menu", path="mods/menu_classic.zy2m"},
+	{name="thd", cat="core", path="lib/thd.zy2l"}
 	--{name="vdevrt", cat="rtmod", path="mods/rtmod_vdevrt.zy2m"},
 	--{name="tsukinet", cat="net", path="mods/net_tsukinet"},
 	--{name="biosemu", cat="loader", path="mods/loader_biosemu.zy2m", warning="warn_mod_biosemu"},
diff --git a/lib/core_thd/init.lua b/lib/core_thd/init.lua
new file mode 100644
index 0000000..7fb19df
--- /dev/null
+++ b/lib/core_thd/init.lua
@@ -0,0 +1,92 @@
+local thd = {}
+
+local threads = {}
+
+local idx = 1
+
+local computer = computer
+local unpack = unpack or table.unpack
+local coroutine = coroutine
+local c_create = coroutine.create
+local c_yield = coroutine.yield
+local c_resume = coroutine.resume
+local c_status = coroutine.status
+
+function thd.add(name, func)
+	local t = assert(c_create(func))
+	--component.proxy(component.list("sandbox")()).debug_log(name, t, func)
+	threads[#threads+1] = {name, t, {}, 0, ".+"}
+	threads[t] = threads[#threads]
+end
+
+local sigs = {}
+local ps = computer.pullSignal
+function thd.autosleep()
+	local msleep = math.huge
+	for i=1, #threads do
+		if (threads[i][4] and threads[i][4] < msleep) then
+			msleep = threads[i][4]
+		end
+	end
+	local rsleep = msleep-computer.uptime()
+	if (rsleep < 0 or #sigs > 0) then
+		rsleep = 0
+	end
+	local sig = {ps(rsleep)}
+	if (#sigs > 0) then
+		if (#sig > 0) then
+			sigs[#sigs+1] = sig
+		end
+		sig = sigs[1]
+		table.remove(sigs, 1)
+	end
+	return sig
+end
+
+local last_sig = {}
+
+function thd.run()
+	last_sig = thd.autosleep()
+	for i=1, #threads do
+		if (threads[i][4] <= computer.uptime() or #last_sig > 0) then
+			if (c_status(threads[i][2]) ~= "running") then
+				local er, dl = c_resume(threads[i][2], unpack(last_sig))
+				if (not er) then error(threads[i][1]..": "..dl) end
+				if (dl == "k") then
+					threads[i][6] = true
+				end
+				dl = computer.uptime() + (dl or math.huge)
+				threads[i][4] = dl
+				sigs[#sigs+1] = {ps(0)}
+			end
+		end
+	end
+	local t = {}
+	for i=1, #threads do
+		local v = threads[i]
+		if (c_status(v[2]) ~= "dead" and not v[6]) then
+			t[#t+1] = v
+			t[v[2]] = v
+		end
+	end
+	threads = t
+	return #threads > 0
+end
+
+function thd.kill(i)
+	threads[i][6] = true
+end
+
+function thd.sched_end()
+	return #threads == idx
+end
+
+function thd.get_threads()
+	return threads
+end
+
+function computer.pullSignal(t)
+	return c_yield(t)
+end
+
+return thd
\ No newline at end of file
diff --git a/src/loader.lua b/src/loader.lua
index 1a26008..14562c8 100644
--- a/src/loader.lua
+++ b/src/loader.lua
@@ -1,2 +1,2 @@
 --#include "src/lzss.lua"
-return assert(load(lzss_decompress($[[luacomp src/zy-neo/zinit.lua 2>/dev/null | sed "s/\]\]/]\ ]/g" | lua5.3 utils/makezbios.lua ]]), "=bios.lua"))(lzss_decompress)
\ No newline at end of file
+return assert(load(lzss_decompress($[[luacomp src/zy-neo/zinit.lua -mluamin 2>/dev/null | sed "s/\]\]/]\ ]/g" | lua5.3 utils/makezbios.lua ]]), "=bios.lua"))(lzss_decompress)
\ No newline at end of file
diff --git a/src/zy-neo/builtins/util_romfs.lua b/src/zy-neo/builtins/util_romfs.lua
index 1479c16..1d592fc 100644
--- a/src/zy-neo/builtins/util_romfs.lua
+++ b/src/zy-neo/builtins/util_romfs.lua
@@ -8,7 +8,6 @@ end
 
 function romfs.read(read, seek, close)
 	local sig = read(7)
-	utils.debug_log("SIGNATURE", sig, #sig)
 	assert(sig, "Read error!")
 	if sig ~= "romfs\1\0" then error(string.format("Invalid romfs (%.14x != %.14x)", string.unpack("i7", sig), string.unpack("i7", "romfs\1\0"))) end
 	local tbl = {}
@@ -19,21 +18,17 @@ function romfs.read(read, seek, close)
 		local fsize = readint(read, 2)
 		local exec = read(1)
 		tbl[#tbl+1] = {name = name, size = fsize, exec = exec == "x", pos = seek(0)}
-		utils.debug_log(name, fsize, exec)
 		seek(fsize)
 		lname = name
 	end
 	tbl[#tbl] = nil
-	utils.debug_log("ROMFS loaded!")
 	return setmetatable({tbl=tbl, read=read,seek=seek, close=close}, {__index=arc})
 end
 
 function arc:fetch(path)
 	for i=1, #self.tbl do
 		if self.tbl[i].name == path then
-			utils.debug_log("DEBUG", self.tbl[i].pos, self.tbl[i].size)
 			self.seek(self.tbl[i].pos-self.seek(0))
-			utils.debug_log("DEBUG2", self.seek(0))
 			return self.read(self.tbl[i].size)
 		end
 	end
diff --git a/src/zy-neo/utils.lua b/src/zy-neo/utils.lua
index 1ff5b5c..91f3eff 100644
--- a/src/zy-neo/utils.lua
+++ b/src/zy-neo/utils.lua
@@ -57,5 +57,4 @@ function utils.deepcopy(src, dest)
 	end
 	return dest
 end
-utils.debug_log("Zorya NEO Started!")
 builtins.utils = function() return utils end
\ No newline at end of file
diff --git a/src/zy-neo/zinit.lua b/src/zy-neo/zinit.lua
index 720f4a3..a9d6a22 100644
--- a/src/zy-neo/zinit.lua
+++ b/src/zy-neo/zinit.lua
@@ -27,7 +27,6 @@ local function load_lua(src, ...)
 	if (src:sub(1, 4) == "\27ZLS") then
 		src = lzss_decompress(src:sub(5))
 	end
-	log("DECOMPRESS", src)
 	return load(src, ...)
 end