diff --git a/AtomCpuMon.bit b/AtomCpuMon.bit
index f5700c7..51f19af 100644
Binary files a/AtomCpuMon.bit and b/AtomCpuMon.bit differ
diff --git a/firmware/AtomBusMon.c b/firmware/AtomBusMon.c
index 7416554..70f76ae 100644
--- a/firmware/AtomBusMon.c
+++ b/firmware/AtomBusMon.c
@@ -113,7 +113,7 @@ char *triggerStrings[NUM_TRIGGERS] = {
 };
 
 
-#define VERSION "0.27"
+#define VERSION "0.28"
 
 #ifdef EMBEDDED_6502
 #define NUM_CMDS 24
diff --git a/src/AtomCpuMon.ucf b/src/AtomCpuMon.ucf
index 1a8214b..6c2016f 100644
--- a/src/AtomCpuMon.ucf
+++ b/src/AtomCpuMon.ucf
@@ -64,7 +64,7 @@ NET "avr_RxD" LOC="P15" | IOSTANDARD = LVCMOS33 ;
 NET "trig<0>" LOC="P62" | IOSTANDARD = LVCMOS33 ;
 NET "trig<1>" LOC="P63" | IOSTANDARD = LVCMOS33 ;
 
-
+NET "fakeTube_n" LOC="P65" | IOSTANDARD = LVCMOS33 ;
 
 # NET ""  LOC="P48" | IOSTANDARD = LVCMOS33 ; # connector pin E2 
 # NET ""  LOC="P49" | IOSTANDARD = LVCMOS33 ; # connector pin E3
diff --git a/src/AtomCpuMon.vhd b/src/AtomCpuMon.vhd
index 7eb411e..75df108 100644
--- a/src/AtomCpuMon.vhd
+++ b/src/AtomCpuMon.vhd
@@ -42,6 +42,9 @@ entity AtomCpuMon is
 
         -- External trigger inputs
         trig             : in    std_logic_vector(1 downto 0);
+        
+        -- Jumpers
+        fakeTube_n      : in     std_logic;
 
         -- Serial Console
         avr_RxD         : in     std_logic;
@@ -158,7 +161,11 @@ begin
     data_latch : process(Phi0)
     begin
         if falling_edge(Phi0) then
-            Din        <= Data;
+            if (fakeTube_n = '0' and Addr_int = x"FEE0") then
+                Din        <= x"FE";
+            else 
+                Din        <= Data;
+            end if;
             memory_din <= Data;
         end if;
     end process;