View difference between Paste ID: VvsT6pV4 and SEhbXLZd

 local SOrd={"top","bottom","left","right","front","back"}
 local SDet,state,cLr={},nil,0,{colors.gray,colors.gray}
 
 local backMon, leftMon, rightMon
 
 showText = true
 
 local function default()
     redstone.setOutput("bottom", false)
     leftMon.setCursorPos(1,10)
     leftMon.setBackgroundColor(cLr[2])
     leftMon.clear()
     leftMon.write("Ready?")
 
     rightMon.setCursorPos(1,10)
     rightMon.setBackgroundColor(cLr[2])
     rightMon.clear()
     rightMon.write("Ready?")
 
     backMon.setBackgroundColor(colors.red)
     backMon.setCursorPos(2,2)
     backMon.clear()
 end
 
 local function ready()
     leftMon.setCursorPos(1,10)
     leftMon.setBackgroundColor(colors.yellow)
     leftMon.setTextColor(colors.black)
     leftMon.clear()
     leftMon.write("Ready")
 
     rightMon.setCursorPos(1,10)
     rightMon.setBackgroundColor(colors.yellow)
     rightMon.setTextColor(colors.black)
     rightMon.clear()
     rightMon.write("Ready")
 
     backMon.setBackgroundColor(colors.yellow)
     backMon.setTextColor(colors.black)
     backMon.setCursorPos(2,1.5)
     backMon.clear()
     if showText then
     backMon.setTextScale(4)
         backMon.write("Ready")
     end
 end
 
 local function go()
     turtle.digDown()
     turtle.suckDown()
     turtle.placeDown()
 
     rs.setOutput("bottom", true)
 
     leftMon.setCursorPos(1,10)
     leftMon.setBackgroundColor(colors.lime)
     leftMon.setTextColor(colors.black)
     leftMon.clear()
     leftMon.write("Go!")
 
     rightMon.setCursorPos(1,10)
     rightMon.setBackgroundColor(colors.lime)
     rightMon.setTextColor(colors.black)
     rightMon.clear()
     rightMon.write("Go!")
 
     backMon.setBackgroundColor(colors.lime)
     backMon.setCursorPos(3,1.5)
     backMon.clear()
     if showText then
         backMon.setTextScale(4)
         backMon.write("Go!")
     end
 
     os.sleep(8)
     redstone.setOutput("bottom",false)
 
     state = 0
 end
 
 local function setup()
     state = 0
 
     print("ID:",os.getComputerID())
 
     if not fs.exists("txt") then
         write("Host ID:")
         local input=read()
         local h=fs.open("txt","w")
         h.write("HID,cLr=")
         h.write(input)
         h.writeLine(",{colors.green,colors.red}")
         h.close()
     end
 
     term.clear()
     term.setCursorPos(1,1)
 
     os.loadAPI("txt")
     HID=txt.HID
     if term.isColor() then
         cLr=txt.cLr
         print("Advanced PC")
     else
         print("Normal PC")
     end
 
     os.unloadAPI("txt")
 
     print("Host ID: "..HID)
     print("This ID:",os.getComputerID())
 
     for i=1,6 do
         if peripheral.isPresent(SOrd[i]) then
           SDet[i]=peripheral.getType(SOrd[i])
             if SDet[i]=="monitor" then
                 if peripheral.call(SOrd[i],"isColor") then
                     SDet[i]="monitor+"
                     if backMon==nil then
-                        backMon=peripheral.wrap("back")
+                        backMon=peripheral.wrap("left")
                     end
 
                     if leftMon==nil then
-                        leftMon=peripheral.wrap("left")
+                        leftMon=peripheral.wrap("back")
                     end
 
                     if rightMon==nil then
                         rightMon=peripheral.wrap("front")
                     end
                 end
             elseif SDet[i]=="modem" then
                 rednet.open(SOrd[i])
                 state=state+1
             end
         end
         print(SOrd[i],"|",SDet[i])
     end
 
     term.setTextColor(cLr[1])
     if backMon==nil or leftMon==nil or rightMon==nil then
         term.setTextColor(cLr[2])
         write("No ")
     end
 
     print("Advanced Monitor Detected (Required)")
 
     term.setTextColor(cLr[1])
     if state==0 then
         term.setTextColor(cLr[2])
         write("No ")
     end
 
     print("Modem Detected (Required)")
 
     if backMon==nil or leftMon==nil or rightMon==nil or state==0 then
         return
     end
 
     print("Use monitor to continue")
 
     state=0
     rednet.send(HID,"register")
 end
 
 local function main()
 
     setup()
 
     while true do
         leftMon.setBackgroundColor(colors.black)
         leftMon.clear() leftMon.setCursorPos(1,1)
 
         if state==0 then
             default()
         elseif state==1 then
             ready()
         end
 
         event,x,y,z = os.pullEvent()
 
         if event == "rednet_message" then
             id = x
             message = y
 
             print(event,"|",id,"|",message)
             if message == "go" then
                 go()
             end
         elseif event == "monitor_touch" and state < 2 then
             if state == 0 then
                 rednet.send(HID,"ready")
                 state = 1
             else
                 rednet.send(HID,"unready")
                 state = 0
             end
         end
     end
 end
 
 main()