initial commit - cross reference with 5th port - obviously has compile errors

code/controllers/subsystem/tgui.dm

@@ -0,0 +1,39 @@
+var/datum/subsystem/tgui/SStgui
+
+/datum/subsystem/tgui
+	name = "tgui"
+	wait = 9
+	init_order = 16
+	display_order = 6
+	flags = SS_NO_INIT|SS_FIRE_IN_LOBBY
+	priority = 110
+
+	var/list/currentrun = list()
+	var/list/open_uis = list() // A list of open UIs, grouped by src_object and ui_key.
+	var/list/processing_uis = list() // A list of processing UIs, ungrouped.
+	var/basehtml // The HTML base used for all UIs.
+
+/datum/subsystem/tgui/New()
+	basehtml = file2text('tgui/tgui.html') // Read the HTML from disk.
+
+	NEW_SS_GLOBAL(SStgui)
+
+/datum/subsystem/tgui/stat_entry()
+	..("P:[processing_uis.len]")
+
+/datum/subsystem/tgui/fire(resumed = 0)
+	if (!resumed)
+		src.currentrun = processing_uis.Copy()
+	//cache for sanic speed (lists are references anyways)
+	var/list/currentrun = src.currentrun
+
+	while(currentrun.len)
+		var/datum/tgui/ui = currentrun[currentrun.len]
+		currentrun.len--
+		if(ui && ui.user && ui.src_object)
+			ui.process()
+		else
+			processing_uis.Remove(ui)
+		if (MC_TICK_CHECK)
+			return
+