diff --git a/.vscode/settings.json b/.vscode/settings.json
index e112a70..a386092 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -3,5 +3,6 @@
     "java.project.outputPath": "bin",
     "java.project.referencedLibraries": [
         "lib/**/*.jar"
-    ]
+    ],
+    "java.jdt.ls.vmargs": "-XX:+UseParallelGC -XX:GCTimeRatio=4 -XX:AdaptiveSizePolicyWeight=90 -Dsun.zip.disableMemoryMapping=true -Xmx4G -Xms100m"
 }
diff --git a/bin/Backend/InterruptHandling/InterruptServiceHandler.class b/bin/Backend/InterruptHandling/InterruptServiceHandler.class
new file mode 100644
index 0000000..0f8db34
Binary files /dev/null and b/bin/Backend/InterruptHandling/InterruptServiceHandler.class differ
diff --git a/bin/Backend/InterruptHandling/InterruptServiceHandlingTable.class b/bin/Backend/InterruptHandling/InterruptServiceHandlingTable.class
new file mode 100644
index 0000000..004adba
Binary files /dev/null and b/bin/Backend/InterruptHandling/InterruptServiceHandlingTable.class differ
diff --git a/bin/Backend/Microcontroller/PIC.class b/bin/Backend/Microcontroller/PIC.class
index c3f45a1..6f9de97 100644
Binary files a/bin/Backend/Microcontroller/PIC.class and b/bin/Backend/Microcontroller/PIC.class differ
diff --git a/bin/Backend/Microcontroller/RAM.class b/bin/Backend/Microcontroller/RAM.class
index feca46a..473dd15 100644
Binary files a/bin/Backend/Microcontroller/RAM.class and b/bin/Backend/Microcontroller/RAM.class differ
diff --git a/bin/Frontend/PIC_SIMULATOR_GUI_JAVA/GUIMainFrame.class b/bin/Frontend/PIC_SIMULATOR_GUI_JAVA/GUIMainFrame.class
index f0dd174..a75ef31 100644
Binary files a/bin/Frontend/PIC_SIMULATOR_GUI_JAVA/GUIMainFrame.class and b/bin/Frontend/PIC_SIMULATOR_GUI_JAVA/GUIMainFrame.class differ
diff --git a/bin/Frontend/PIC_SIMULATOR_GUI_JAVA/GUITestFileTable.class b/bin/Frontend/PIC_SIMULATOR_GUI_JAVA/GUITestFileTable.class
index e7c5bc6..0a3b2f8 100644
Binary files a/bin/Frontend/PIC_SIMULATOR_GUI_JAVA/GUITestFileTable.class and b/bin/Frontend/PIC_SIMULATOR_GUI_JAVA/GUITestFileTable.class differ
diff --git a/src/Backend/InterruptHandling/InterruptServiceHandler.java b/src/Backend/InterruptHandling/InterruptServiceHandler.java
new file mode 100644
index 0000000..852cab4
--- /dev/null
+++ b/src/Backend/InterruptHandling/InterruptServiceHandler.java
@@ -0,0 +1,12 @@
+package Backend.InterruptHandling;
+
+public class InterruptServiceHandler extends Thread {
+
+    public InterruptServiceHandler() {}
+
+    public void run() {
+
+    }
+
+    
+}
diff --git a/src/Backend/InterruptHandling/InterruptServiceHandlingTable.java b/src/Backend/InterruptHandling/InterruptServiceHandlingTable.java
new file mode 100644
index 0000000..a9b6ef7
--- /dev/null
+++ b/src/Backend/InterruptHandling/InterruptServiceHandlingTable.java
@@ -0,0 +1,19 @@
+package Backend.InterruptHandling;
+
+/**
+ * Class contains methods which calls a method to an overhanded value.
+ */
+public class InterruptServiceHandlingTable {
+
+    private final int ISR_TMR0_OVERFLOW = 1; //tmr0 overflow interrupt
+    private final int INT_RB0 = 2; //External interrupt over int/rb0-pin
+    private final int RB4 = 3; //PortB change interrupts
+    private final int RB5 = 4; //PortB change interrupts
+    private final int RB6 = 5; //PortB change interrupts
+    private final int RB7 = 6; //PortB change interrupts
+    private final int EEPROM_DATA_WRITE = 7;
+
+    public InterruptServiceHandlingTable() {}
+
+
+}
diff --git a/src/Backend/Microcontroller/PIC.java b/src/Backend/Microcontroller/PIC.java
index 3bbae2f..dece17e 100755
--- a/src/Backend/Microcontroller/PIC.java
+++ b/src/Backend/Microcontroller/PIC.java
@@ -8,8 +8,7 @@ package Backend.Microcontroller;
 /** 
  * Microcontrollerclass that contains all other partclasses
  */
-public class PIC 
-{
+public class PIC {
     /**
      * Parts of PIC.
      * Objects are written with a large starting letter.
@@ -19,8 +18,7 @@ public class PIC
     private STACK Stack;
     private int WRegister;
 
-    public PIC()
-    {
+    public PIC() {
         //Initialising objects of PIC.
         Eeprom = new EEPROM();
         Ram = new RAM();
@@ -28,7 +26,7 @@ public class PIC
         WRegister = 0;
     }
 
-    public void resetPIC()
+    public synchronized void resetPIC()
     {
         Ram = new RAM();
         Stack = new STACK();
@@ -61,25 +59,25 @@ public class PIC
     int bitMaskClearBitArray[] = { bitMaskClearBit0, bitMaskClearBit1, bitMaskClearBit2, bitMaskClearBit3, bitMaskClearBit4, bitMaskClearBit5,
                                    bitMaskClearBit6, bitMaskClearBit7};
 
-    public void setWRegister(int value)
+    public synchronized void setWRegister(int value)
     {
         WRegister = value;
     }
 
-    public int get_WRegister()
+    public synchronized int get_WRegister()
     {
         return WRegister;
     }
 
-    public RAM getRam() {
+    public synchronized RAM getRam() {
         return Ram;
     }
 
-    public EEPROM getEeprom() {
+    public synchronized EEPROM getEeprom() {
         return Eeprom;
     }
 
-    public STACK getStack() {
+    public synchronized STACK getStack() {
         return Stack;
     }
 
diff --git a/src/Backend/Microcontroller/RAM.java b/src/Backend/Microcontroller/RAM.java
index 45031d3..923aff9 100755
--- a/src/Backend/Microcontroller/RAM.java
+++ b/src/Backend/Microcontroller/RAM.java
@@ -44,7 +44,7 @@ public class RAM {
      * @return the value of the element at the adress of the bank.
      * @throws Exception
      */
-    public int get_Value_Of_Bank_RP0_Bit_Of_Element_At_Adress(boolean rP0Bit, int adress) {
+    public synchronized int get_Value_Of_Bank_RP0_Bit_Of_Element_At_Adress(boolean rP0Bit, int adress) {
         int valueOfBankRP0BitOfElementAtAdress = 0;
 
         if (rP0Bit == false) {
@@ -72,7 +72,7 @@ public class RAM {
      * @param x shows if bank 0 or 1 will be set.
      * @param array an array which will represent bank x.
      */
-    public void set_Bank_X(boolean rp0Bit, int[] array) {
+    public synchronized void set_Bank_X(boolean rp0Bit, int[] array) {
         if (rp0Bit == false) {
             bank0 = array;
         }
@@ -87,7 +87,7 @@ public class RAM {
      * @param bank where the value will be changed.
      * @param value that will be written into the element.
      */
-    public void set_Element_X_Of_Bank_Y_To_Z(int element, boolean rp0Bit, int value) {
+    public synchronized void set_Element_X_Of_Bank_Y_To_Z(int element, boolean rp0Bit, int value) {
         if (element < 0 || element > 127) {
             System.out.println("Wrong input, value from 0 to 127 expected!");
         } else {
@@ -230,13 +230,13 @@ public class RAM {
     }
 
     //Bank0 Registers
-    public void set_TMR0(int value)
+    public synchronized void set_TMR0(int value)
     {
         value &= 255;
         bank0[1] = value;
     }
 
-    public void increment_TMR0()
+    public synchronized void increment_TMR0()
     {
         Timer0Prescaled++;
 
@@ -257,45 +257,45 @@ public class RAM {
         }
     }
 
-    public int get_TMR0()
+    public synchronized int get_TMR0()
     {
         return bank0[1];
     }
 
-    public void set_PCL(int value)
+    public synchronized void set_PCL(int value)
     {
         bank0[2] = value;
         bank1[2] = value;
     }
 
-    public int get_PCL()
+    public synchronized int get_PCL()
     {
         return bank0[2];
     }
 
-    public void set_STATUS(int value)
+    public synchronized void set_STATUS(int value)
     {
         bank0[3] = value;
         bank1[3] = value;
     }
 
-    public int get_STATUS()
+    public synchronized int get_STATUS()
     {
         return bank0[3];
     }
 
-    public void set_FSR(int value)
+    public synchronized void set_FSR(int value)
     {
         bank0[4] = value;
         bank1[4] = value;
     }
 
-    public int get_FSR()
+    public synchronized int get_FSR()
     {
         return bank0[4];
     }
 
-    public void set_PORTA(int value)
+    public synchronized void set_PORTA(int value)
     {
         if (((value & 0b00010000) == 0b00010000) && get_T0CS())
         {
@@ -320,7 +320,7 @@ public class RAM {
         bank0[5] = value;
     }
 
-    public void set_PORTA_Bit_X_To_Y(int x, int y)
+    public synchronized void set_PORTA_Bit_X_To_Y(int x, int y)
     {
         if ((x == 4))
         {
@@ -370,17 +370,17 @@ public class RAM {
         }
     }
 
-    public int get_PORTA()
+    public synchronized int get_PORTA()
     {
         return bank0[5];
     }
 
-    public void set_PORTB(int value)
+    public synchronized void set_PORTB(int value)
     {
         bank0[6] = value;
     }
 
-    public void set_PORTB_Bit_X_To_Y(int x, int y)
+    public synchronized void set_PORTB_Bit_X_To_Y(int x, int y)
     {
         if (y == 0)
         {
@@ -404,106 +404,106 @@ public class RAM {
         }
     }
 
-    public int get_PORTB()
+    public synchronized int get_PORTB()
     {
         return bank0[6];
     }
 
-    public void set_EEDATA(int value)
+    public synchronized void set_EEDATA(int value)
     {
         bank0[8] = value;
     }
 
-    public int get_EEDATA()
+    public synchronized int get_EEDATA()
     {
         return bank0[8];
     }
 
-    public void set_EEADR(int value)
+    public synchronized void set_EEADR(int value)
     {
         bank0[9] = value;
     }
 
-    public int get_EEADR()
+    public synchronized int get_EEADR()
     {
         return bank0[9];
     }
 
-    public void set_PCLATH(int value)
+    public synchronized void set_PCLATH(int value)
     {
         bank0[10] = value;
         bank1[10] = value;
     }
 
-    public int get_PCLATH()
+    public synchronized int get_PCLATH()
     {
         return bank0[10];
     }
 
-    public void set_INTCON(int value)
+    public synchronized void set_INTCON(int value)
     {
         bank0[11] = value;
         bank1[11] = value;
     }
 
-    public int get_INTCON()
+    public synchronized int get_INTCON()
     {
         return bank0[11];
     }
 
     //Bank1 Registers
-    public void set_OPTION(int value)
+    public synchronized void set_OPTION(int value)
     {
         bank1[1] = value;
     }
 
-    public int get_OPTION()
+    public synchronized int get_OPTION()
     {
         return bank1[1];
     }
 
-    public void set_TRISA(int value)
+    public synchronized void set_TRISA(int value)
     {
         bank1[5] = value;
     }
 
-    public int get_TRISA()
+    public synchronized int get_TRISA()
     {
         return bank1[5];
     }
 
-    public void set_TRISB(int value)
+    public synchronized void set_TRISB(int value)
     {
         bank1[6] = value;
     }
 
-    public int get_TRISB()
+    public synchronized int get_TRISB()
     {
         return bank1[6];
     }
 
-    public void set_EECON1(int value)
+    public synchronized void set_EECON1(int value)
     {
         bank1[7] = value;
     }
 
-    public int get_EECON1()
+    public synchronized int get_EECON1()
     {
         return bank1[7];
     }
 
-    public void set_EECON2(int value)
+    public synchronized void set_EECON2(int value)
     {
         bank1[8] = value;
     }
 
-    public int get_EECON2()
+    public synchronized int get_EECON2()
     {
         return bank1[8];
     }
 
     //Bank0 & Bank1 Statusflags
-    public void set_Carryflag(boolean value)
+    public synchronized void set_Carryflag(boolean value)
     {
         int status = get_STATUS();
         if (value)
@@ -519,12 +519,12 @@ public class RAM {
         set_STATUS(status);
     }
 
-    public boolean get_Carryflag()
+    public synchronized boolean get_Carryflag()
     {
         return (get_STATUS() & 0b00000001) == 1;
     }
 
-    public void set_Digitcarryflag(boolean value)
+    public synchronized void set_Digitcarryflag(boolean value)
     {
         int status = get_STATUS();
         if (value)
@@ -540,12 +540,12 @@ public class RAM {
         set_STATUS(status);
     }
 
-    public boolean get_Digitcarryflag()
+    public synchronized boolean get_Digitcarryflag()
     {
         return (get_STATUS() & 0b00000010) == 2;
     }
 
-    public void set_Zeroflag(boolean value)
+    public synchronized void set_Zeroflag(boolean value)
     {
         int status = get_STATUS();
         if (value)
@@ -561,12 +561,12 @@ public class RAM {
         set_STATUS(status);
     }
 
-    public boolean get_Zeroflag()
+    public synchronized boolean get_Zeroflag()
     {
         return (get_STATUS() & 0b00000100) == 4;
     }
 
-    public void set_TimeOutFlag(boolean value)
+    public synchronized void set_TimeOutFlag(boolean value)
     {
         int status = get_STATUS();
         if (value)
@@ -582,12 +582,12 @@ public class RAM {
         set_STATUS(status);
     }
 
-    public boolean get_TimeOutFlag()
+    public synchronized boolean get_TimeOutFlag()
     {
         return (get_STATUS() & 0b00001000) == 8;
     }
 
-    public void set_PowerDownFlag(boolean value)
+    public synchronized void set_PowerDownFlag(boolean value)
     {
         int status = get_STATUS();
         if (value)
@@ -603,12 +603,12 @@ public class RAM {
         set_STATUS(status);
     }
 
-    public boolean get_PowerDownFlag()
+    public synchronized boolean get_PowerDownFlag()
     {
         return (get_STATUS() & 0b00010000) == 16;
     }
 
-    public void set_RP0Bit(boolean value)
+    public synchronized void set_RP0Bit(boolean value)
     {
         int status = get_STATUS();
         if (value)
@@ -624,12 +624,12 @@ public class RAM {
         set_STATUS(status);
     }
 
-    public boolean get_RP0Bit()
+    public synchronized boolean get_RP0Bit()
     {
         return (get_STATUS() & 0b00100000) == 32;
     }
 
-    public void set_RP1Bit(boolean value)
+    public synchronized void set_RP1Bit(boolean value)
     {
         int status = get_STATUS();
         if (value)
@@ -645,12 +645,12 @@ public class RAM {
         set_STATUS(status);
     }
 
-    public boolean get_RP1Bit()
+    public synchronized boolean get_RP1Bit()
     {
         return (get_STATUS() & 0b01000000) == 64;
     }
 
-    public void set_Interruptflag(boolean value)
+    public synchronized void set_Interruptflag(boolean value)
     {
         int status = get_STATUS();
         if (value)
@@ -666,23 +666,23 @@ public class RAM {
         set_STATUS(status);
     }
 
-    public boolean get_Interruptflag()
+    public synchronized boolean get_Interruptflag()
     {
         return (get_STATUS() & 0b10000000) == 128;
     }
 
     //Bank0 PCL
-    public int get_Programcounter()
+    public synchronized int get_Programcounter()
     {
         return (bank0[2]);
     }
 
-    public int get_LastProgramcounter()
+    public synchronized int get_LastProgramcounter()
     {
         return lastProgramcounter;
     }
 
-    public void inkrement_Programcounter(int value, int kindOfCall) //0 at Fetchzycle, 1 at Jumpcommand, 2 at ...
+    public synchronized void inkrement_Programcounter(int value, int kindOfCall) //0 at Fetchzycle, 1 at Jumpcommand, 2 at ...
     {
         if (bank0[2] >= 0 && bank0[2] <= 255)
         {
@@ -704,7 +704,7 @@ public class RAM {
         }
     }
 
-    public void dekrement_Programcounter(int value)
+    public synchronized void dekrement_Programcounter(int value)
     {
         if (bank0[2] > 0 && bank0[2] <= 255)
         {
@@ -718,7 +718,7 @@ public class RAM {
         }
     }
 
-    public boolean set_Programcounter(int value)
+    public synchronized boolean set_Programcounter(int value)
     {
         boolean setWorked = false;
 
@@ -738,7 +738,7 @@ public class RAM {
     }
 
     //Bank0 PORTA
-    public void set_RA0(boolean value)
+    public synchronized void set_RA0(boolean value)
     {
         int portA = get_PORTA();
         if (value)
@@ -754,14 +754,14 @@ public class RAM {
         set_PORTA(portA);
     }
     
-    public boolean get_RA0()
+    public synchronized boolean get_RA0()
     {
         {
             return (get_PORTA() & 0b00000001) == 1;
         }
     }
 
-    public void set_RA1(boolean value)
+    public synchronized void set_RA1(boolean value)
     {
         int portA = get_PORTA();
         if (value)
@@ -777,14 +777,14 @@ public class RAM {
         set_PORTA(portA);
     }
     
-    public boolean get_RA1()
+    public synchronized boolean get_RA1()
     {
         {
             return (get_PORTA() & 0b00000010) == 2;
         }
     }
 
-    public void set_RA2(boolean value)
+    public synchronized void set_RA2(boolean value)
     {
         int portA = get_PORTA();
         if (value)
@@ -800,14 +800,14 @@ public class RAM {
         set_PORTA(portA);
     }
     
-    public boolean get_RA2()
+    public synchronized boolean get_RA2()
     {
         {
             return (get_PORTA() & 0b00000100) == 4;
         }
     }
 
-    public void set_RA3(boolean value)
+    public synchronized void set_RA3(boolean value)
     {
         int portA = get_PORTA();
         if (value)
@@ -823,7 +823,7 @@ public class RAM {
         set_PORTA(portA);
     }
     
-    public boolean get_RA3()
+    public synchronized boolean get_RA3()
     {
         {
             return (get_PORTA() & 0b00001000) == 8;
@@ -831,7 +831,7 @@ public class RAM {
     }
 
     //External Clockimpulse for Timer0
-    public void set_RA4_T0CKI(boolean value)
+    public synchronized void set_RA4_T0CKI(boolean value)
     {
         int portA = get_PORTA();
         if (value)
@@ -847,7 +847,7 @@ public class RAM {
         set_PORTA(portA);
     }
     
-    public boolean get_RA4_T0CKI()
+    public synchronized boolean get_RA4_T0CKI()
     {
         {
             return (get_PORTA() & 0b00010000) == 16;
@@ -855,7 +855,7 @@ public class RAM {
     }
 
     //Bank0 PortB
-    public void set_RB0_INT(boolean value)
+    public synchronized void set_RB0_INT(boolean value)
     {
         int portB = get_PORTB();
         if (value)
@@ -871,14 +871,14 @@ public class RAM {
         set_PORTB(portB);
     }
     
-    public boolean get_RB0_INT()
+    public synchronized boolean get_RB0_INT()
     {
         {
             return (get_PORTB() & 0b00000001) == 1;
         }
     }
 
-    public void set_RB1(boolean value)
+    public synchronized void set_RB1(boolean value)
     {
         int portB = get_PORTB();
         if (value)
@@ -894,14 +894,14 @@ public class RAM {
         set_PORTB(portB);
     }
     
-    public boolean get_RB1()
+    public synchronized boolean get_RB1()
     {
         {
             return (get_PORTB() & 0b00000010) == 2;
         }
     }
 
-    public void set_RB2(boolean value)
+    public synchronized void set_RB2(boolean value)
     {
         int portB = get_PORTB();
         if (value)
@@ -917,12 +917,12 @@ public class RAM {
         set_PORTB(portB);
     }
     
-    public boolean get_RB2()
+    public synchronized boolean get_RB2()
     {
         return (get_PORTB() & 0b00000100) == 4;
     }
 
-    public void set_RB3(boolean value)
+    public synchronized void set_RB3(boolean value)
     {
         int portB = get_PORTB();
         if (value)
@@ -938,14 +938,14 @@ public class RAM {
         set_PORTB(portB);
     }
     
-    public boolean get_RB3()
+    public synchronized boolean get_RB3()
     {
         {
             return (get_PORTB() & 0b00001000) == 8;
         }
     }
 
-    public void set_RB4(boolean value)
+    public synchronized void set_RB4(boolean value)
     {
         int portB = get_PORTB();
         if (value)
@@ -961,14 +961,14 @@ public class RAM {
         set_PORTB(portB);
     }
     
-    public boolean get_RB4()
+    public synchronized boolean get_RB4()
     {
         {
             return (get_PORTB() & 0b00010000) == 16;
         }
     }
 
-    public void set_RB5(boolean value)
+    public synchronized void set_RB5(boolean value)
     {
         int portB = get_PORTB();
         if (value)
@@ -984,14 +984,14 @@ public class RAM {
         set_PORTB(portB);
     }
     
-    public boolean get_RB5()
+    public synchronized boolean get_RB5()
     {
         {
             return (get_PORTB() & 0b00100000) == 32;
         }
     }
 
-    public void set_RB6(boolean value)
+    public synchronized void set_RB6(boolean value)
     {
         int portB = get_PORTB();
         if (value)
@@ -1007,14 +1007,14 @@ public class RAM {
         set_PORTB(portB);
     }
     
-    public boolean get_RB6()
+    public synchronized boolean get_RB6()
     {
         {
             return (get_PORTB() & 0b01000000) == 64;
         }
     }
 
-    public void set_RB7(boolean value)
+    public synchronized void set_RB7(boolean value)
     {
         int portB = get_PORTB();
         if (value)
@@ -1030,7 +1030,7 @@ public class RAM {
         set_PORTB(portB);
     }
     
-    public boolean get_RB7()
+    public synchronized boolean get_RB7()
     {
         {
             return (get_PORTB() & 0b10000000) == 128;
@@ -1038,7 +1038,7 @@ public class RAM {
     }
 
     //Bank0 INTCON
-    public void set_RBIF(boolean value)
+    public synchronized void set_RBIF(boolean value)
     {
         int intcon = get_INTCON();
         if (value)
@@ -1054,14 +1054,14 @@ public class RAM {
         set_INTCON(intcon);
     }
     
-    public boolean get_RBIF()
+    public synchronized boolean get_RBIF()
     {
         {
             return (get_INTCON() & 0b00000001) == 1;
         }
     }
 
-    public void set_INTF(boolean value)
+    public synchronized void set_INTF(boolean value)
     {
         int intcon = get_INTCON();
         if (value)
@@ -1077,14 +1077,14 @@ public class RAM {
         set_INTCON(intcon);
     }
     
-    public boolean get_INTF()
+    public synchronized boolean get_INTF()
     {
         {
             return (get_INTCON() & 0b00000010) == 2;
         }
     }
 
-    public void set_T0IF(boolean value)
+    public synchronized void set_T0IF(boolean value)
     {
         int intcon = get_INTCON();
         if (value)
@@ -1100,14 +1100,14 @@ public class RAM {
         set_INTCON(intcon);
     }
     
-    public boolean get_T0IF()
+    public synchronized boolean get_T0IF()
     {
         {
             return (get_INTCON() & 0b00000100) == 4;
         }
     }
 
-    public void set_RBIE(boolean value)
+    public synchronized void set_RBIE(boolean value)
     {
         int intcon = get_INTCON();
         if (value)
@@ -1123,14 +1123,14 @@ public class RAM {
         set_INTCON(intcon);
     }
     
-    public boolean get_RBIE()
+    public synchronized boolean get_RBIE()
     {
         {
             return (get_INTCON() & 0b00001000) == 8;
         }
     }
 
-    public void set_INTE(boolean value)
+    public synchronized void set_INTE(boolean value)
     {
         int intcon = get_INTCON();
         if (value)
@@ -1146,14 +1146,14 @@ public class RAM {
         set_INTCON(intcon);
     }
     
-    public boolean get_INTE()
+    public synchronized boolean get_INTE()
     {
         {
             return (get_INTCON() & 0b00010000) == 16;
         }
     }
 
-    public void set_T0IE(boolean value)
+    public synchronized void set_T0IE(boolean value)
     {
         int intcon = get_INTCON();
         if (value)
@@ -1169,14 +1169,14 @@ public class RAM {
         set_INTCON(intcon);
     }
     
-    public boolean get_T0IE()
+    public synchronized boolean get_T0IE()
     {
         {
             return (get_INTCON() & 0b00100000) == 32;
         }
     }
 
-    public void set_EEIE(boolean value)
+    public synchronized void set_EEIE(boolean value)
     {
         int intcon = get_INTCON();
         if (value)
@@ -1192,14 +1192,14 @@ public class RAM {
         set_INTCON(intcon);
     }
     
-    public boolean get_EEIE()
+    public synchronized boolean get_EEIE()
     {
         {
             return (get_INTCON() & 0b01000000) == 64;
         }
     }
 
-    public void set_GIE(boolean value)
+    public synchronized void set_GIE(boolean value)
     {
         int intcon = get_INTCON();
         if (value)
@@ -1215,7 +1215,7 @@ public class RAM {
         set_INTCON(intcon);
     }
     
-    public boolean get_GIE()
+    public synchronized boolean get_GIE()
     {
         {
             return (get_INTCON() & 0b10000000) == 128;
@@ -1223,7 +1223,7 @@ public class RAM {
     }
 
     //Bank1 OPTION_REG
-    public void set_PS0(boolean value)
+    public synchronized void set_PS0(boolean value)
     {
         int option = get_OPTION();
         if (value)
@@ -1239,14 +1239,14 @@ public class RAM {
         set_OPTION(option);
     }
     
-    public boolean get_PS0()
+    public synchronized boolean get_PS0()
     {
         {
             return (get_OPTION() & 0b00000001) == 1;
         }
     }
 
-    public void set_PS1(boolean value)
+    public synchronized void set_PS1(boolean value)
     {
         int option = get_OPTION();
         if (value)
@@ -1262,14 +1262,14 @@ public class RAM {
         set_OPTION(option);
     }
     
-    public boolean get_PS1()
+    public synchronized boolean get_PS1()
     {
         {
             return (get_OPTION() & 0b00000010) == 2;
         }
     }
 
-    public void set_PS2(boolean value)
+    public synchronized void set_PS2(boolean value)
     {
         int option = get_OPTION();
         if (value)
@@ -1285,48 +1285,32 @@ public class RAM {
         set_OPTION(option);
     }
     
-    public boolean get_PS2()
+    public synchronized boolean get_PS2()
     {
         {
             return (get_OPTION() & 0b00000100) == 4;
         }
     }
 
-    public int get_TMR0_PrescalerRate()
-    {
+    public synchronized int get_TMR0_PrescalerRate() {
         int returnValue = 0;
-
-        if (get_PSA())
-        {
+        if (get_PSA()) {
             returnValue = 1;
-        }
-        
-        else
-        {
-            switch (get_OPTION() & 0b00000111)
-            {
-                case 0:
-                {
+        } else {
+            switch (get_OPTION() & 0b00000111) {
+                case 0: {
                     returnValue = 2;
                 }break;
-            
-                case 1:
-                {
+                case 1: {
                     returnValue = 4;
                 }break;
-    
-                case 2:
-                {
+                case 2: {
                     returnValue = 8;
                 }break;
-    
-                case 3:
-                {
+                case 3: {
                     returnValue = 16;
                 }break;
-    
-                case 4:
-                {
+                case 4: {
                     returnValue = 32;
                 }break;
     
@@ -1349,7 +1333,7 @@ public class RAM {
         return returnValue;
     }
 
-    public int get_WDT_PrescalerRate()
+    public synchronized int get_WDT_PrescalerRate()
     {
         int returnValue = 0;
 
@@ -1399,7 +1383,7 @@ public class RAM {
         return returnValue;
     }
 
-    public void set_PSA(boolean value)
+    public synchronized void set_PSA(boolean value)
     {
         int option = get_OPTION();
         if (value)
@@ -1415,14 +1399,14 @@ public class RAM {
         set_OPTION(option);
     }
     
-    public boolean get_PSA()
+    public synchronized boolean get_PSA()
     {
         {
             return (get_OPTION() & 0b00001000) == 8;
         }
     }
 
-    public void set_T0SE(boolean value)
+    public synchronized void set_T0SE(boolean value)
     {
         int option = get_OPTION();
         if (value)
@@ -1438,14 +1422,14 @@ public class RAM {
         set_OPTION(option);
     }
     
-    public boolean get_T0SE()
+    public synchronized boolean get_T0SE()
     {
         {
             return (get_OPTION() & 0b00010000) == 16;
         }
     }
 
-    public void set_T0CS(boolean value)
+    public synchronized void set_T0CS(boolean value)
     {
         int option = get_OPTION();
         if (value)
@@ -1461,14 +1445,14 @@ public class RAM {
         set_OPTION(option);
     }
     
-    public boolean get_T0CS()
+    public synchronized boolean get_T0CS()
     {
         {
             return (get_OPTION() & 0b00100000) == 32;
         }
     }
 
-    public void set_INTEDG(boolean value)
+    public synchronized void set_INTEDG(boolean value)
     {
         int option = get_OPTION();
         if (value)
@@ -1484,14 +1468,14 @@ public class RAM {
         set_OPTION(option);
     }
     
-    public boolean get_INTEDG()
+    public synchronized boolean get_INTEDG()
     {
         {
             return (get_OPTION() & 0b01000000) == 64;
         }
     }
 
-    public void set_RBPU(boolean value)
+    public synchronized void set_RBPU(boolean value)
     {
         int option = get_OPTION();
         if (value)
@@ -1507,7 +1491,7 @@ public class RAM {
         set_OPTION(option);
     }
     
-    public boolean get_RBPU()
+    public synchronized boolean get_RBPU()
     {
         {
             return (get_OPTION() & 0b10000000) == 128;
@@ -1515,224 +1499,144 @@ public class RAM {
     }
 
     //Bank1 EECON1
-    public void set_RD(boolean value)
-    {
+    public synchronized void set_RD(boolean value) {
         int eecon = get_EECON1();
-        if (value)
-        {
+        if (value) {
             eecon |= 0b00000001;
-        }
-
-        else
-        {
+        } else {
             eecon &= 0b11111110;
         }
-
         set_EECON1(eecon);
     }
     
-    public boolean get_RD()
-    {
-        {
-            return (get_EECON1() & 0b00000001) == 1;
-        }
+    public synchronized boolean get_RD() {
+        return (get_EECON1() & 0b00000001) == 1;
     }
 
-    public void set_WR(boolean value)
-    {
+    public synchronized void set_WR(boolean value) {
         int eecon = get_EECON1();
-        if (value)
-        {
+        if (value) {
             eecon |= 0b00000010;
-        }
-
-        else
-        {
+        } else {
             eecon &= 0b11111101;
         }
-
         set_EECON1(eecon);
     }
     
-    public boolean get_WR()
-    {
-        {
-            return (get_EECON1() & 0b00000010) == 2;
-        }
+    public synchronized boolean get_WR() {
+        return (get_EECON1() & 0b00000010) == 2;
     }
 
-    public void set_WREN(boolean value)
-    {
+    public synchronized void set_WREN(boolean value) {
         int eecon = get_EECON1();
-        if (value)
-        {
+        if (value) {
             eecon |= 0b00000100;
-        }
-
-        else
-        {
+        } else {
             eecon &= 0b11111011;
         }
-
         set_EECON1(eecon);
     }
     
-    public boolean get_WREN()
-    {
-        {
-            return (get_EECON1() & 0b00000100) == 4;
-        }
+    public synchronized boolean get_WREN() {
+        return (get_EECON1() & 0b00000100) == 4;
     }
 
-    public void set_WRERR(boolean value)
-    {
+    public synchronized void set_WRERR(boolean value) {
         int eecon = get_EECON1();
-        if (value)
-        {
+        if (value) {
             eecon |= 0b00001000;
-        }
-
-        else
-        {
+        } else {
             eecon &= 0b11110111;
         }
-
         set_EECON1(eecon);
     }
     
-    public boolean get_WRERR()
-    {
-        {
-            return (get_EECON1() & 0b00001000) == 8;
-        }
+    public synchronized boolean get_WRERR() {
+        return (get_EECON1() & 0b00001000) == 8;
     }
 
-    public void set_EEIF(boolean value)
-    {
+    public synchronized void set_EEIF(boolean value) {
         int eecon = get_EECON1();
-        if (value)
-        {
+        if (value) {
             eecon |= 0b00010000;
-        }
-
-        else
-        {
+        } else {
             eecon &= 0b11101111;
         }
-
         set_EECON1(eecon);
     }
     
-    public boolean get_EEIF()
-    {
-        {
-            return (get_EECON1() & 0b00010000) == 16;
-        }
+    public synchronized boolean get_EEIF() {
+        return (get_EECON1() & 0b00010000) == 16;   
     }
 
     //Bank1 TRISA
-    public void set_TRISA0(boolean value)
-    {
+    public synchronized void set_TRISA0(boolean value) {
         int trisA = get_TRISA();
-        if (value)
-        {
+        if (value) {
             trisA |= 0b00000001;
-        }
-
-        else
-        {
+        } else {
             trisA &= 0b11111110;
         }
-
         set_TRISA(trisA);
     }
 
-    public boolean get_TRISA0()
-    {
+    public synchronized boolean get_TRISA0() {
         return (get_TRISA() & 0b00000001) == 1;
     }
 
-    public void set_TRISA1(boolean value)
-    {
+    public synchronized void set_TRISA1(boolean value) {
         int trisA = get_TRISA();
-        if (value)
-        {
+        if (value) {
             trisA |= 0b00000010;
-        }
-
-        else
-        {
+        } else {
             trisA &= 0b11111101;
         }
-
         set_TRISA(trisA);
     }
 
-    public boolean get_TRISA1()
-    {
+    public synchronized boolean get_TRISA1() {
         return (get_TRISA() & 0b00000010) == 2;
     }
 
-    public void set_TRISA2(boolean value)
-    {
+    public synchronized void set_TRISA2(boolean value) {
         int trisA = get_TRISA();
-        if (value)
-        {
+        if (value) {
             trisA |= 0b00000100;
-        }
-
-        else
-        {
+        } else {
             trisA &= 0b11111011;
         }
-
         set_TRISA(trisA);
     }
 
-    public boolean get_TRISA2()
-    {
+    public synchronized boolean get_TRISA2() {
         return (get_TRISA() & 0b00000100) == 4;
     }
 
-    public void set_TRISA3(boolean value)
-    {
+    public synchronized void set_TRISA3(boolean value) {
         int trisA = get_TRISA();
-        if (value)
-        {
+        if (value) {
             trisA |= 0b00001000;
-        }
-
-        else
-        {
+        } else {
             trisA &= 0b11110111;
         }
-
         set_TRISA(trisA);
     }
 
-    public boolean get_TRISA3()
-    {
+    public synchronized boolean get_TRISA3() {
         return (get_TRISA() & 0b00001000) == 8;
     }
 
-    public void set_TRISA4(boolean value)
-    {
+    public synchronized void set_TRISA4(boolean value) {
         int trisA = get_TRISA();
-        if (value)
-        {
+        if (value) {
             trisA |= 0b00010000;
-        }
-
-        else
-        {
+        } else {
             trisA &= 0b11101111;
         }
-
         set_TRISA(trisA);
     }
 
-    public boolean get_TRISA4()
-    {
+    public synchronized boolean get_TRISA4() {
         return (get_TRISA() & 0b00010000) == 16;
     }
 }
\ No newline at end of file
diff --git a/src/Frontend/PIC_SIMULATOR_GUI_JAVA/GUIMainFrame.java b/src/Frontend/PIC_SIMULATOR_GUI_JAVA/GUIMainFrame.java
index 9a7230f..59c2cb7 100755
--- a/src/Frontend/PIC_SIMULATOR_GUI_JAVA/GUIMainFrame.java
+++ b/src/Frontend/PIC_SIMULATOR_GUI_JAVA/GUIMainFrame.java
@@ -1,11 +1,14 @@
 package Frontend.PIC_SIMULATOR_GUI_JAVA;
 
 import java.awt.Color;
+import java.awt.Dimension;
+import java.awt.Insets;
 import java.awt.GridBagLayout;
 import java.awt.GridBagConstraints;
 
 import javax.swing.BorderFactory;
 import javax.swing.ImageIcon;
+import javax.swing.JButton;
 import javax.swing.JFrame;
 import javax.swing.border.Border;
 
@@ -24,13 +27,11 @@ public class GUIMainFrame extends JFrame {
         this.setTitle("PIC-Simulator GUI"); // sets title of frame
         this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); // if x is pressed, exit application (HIDE_ON_CLOSE-hides application, DO_NOTHING_ON_CLOSE-prevents user from closing application)
         //this.setResizable(false); // prevent frame from beeing resized
-        this.setSize(1200, 840); //sets x and y dimension of frame
+        this.setSize(1400, 800); //sets x and y dimension of frame
+        //this.setComponentOrientation(ComponentOrientation.LEFT_TO_RIGHT);
         this.setLayout(new GridBagLayout());
-
         oGUITestFileTable = new GUITestFileTable();
-
         this.setJMenuBar(new GUIMenuBar(env, this, oGUITestFileTable));
-
         this.setVisible(true); //make frame visible
         this.setBackground(new Color(76, 78, 82));
         ImageIcon guiLogo = new ImageIcon("./images/gui_logo.png"); // create an ImageIcon
@@ -50,7 +51,7 @@ public class GUIMainFrame extends JFrame {
         //text.setBackground(Color.BLUE); // set background color
         //text.setOpaque(true); // display background color
 
-        Border border = BorderFactory.createLineBorder(Color.green, 3); // creates border for label, color and size of border
+        //Border border = BorderFactory.createLineBorder(Color.green, 3); // creates border for label, color and size of border
 
         //text.setBorder(border); // sets border of label to "border"
         //text.setVerticalAlignment(JLabel.TOP); // vertically alligns label "text" (JLabel.TOP, JLabel.CENTER, JLabel.BOTTOM)
@@ -60,13 +61,11 @@ public class GUIMainFrame extends JFrame {
 
         //getContentPane().setLayout(new BorderLayout());
         //this.add(new GUITestFileTable("./testfiles/TPicSim1.LST"));
-        GridBagConstraints oGridBagConstraints = new GridBagConstraints();
-        oGridBagConstraints.gridx = 10;
-        oGridBagConstraints.gridy = 10;
-        oGridBagConstraints.gridheight = 10;
-        oGridBagConstraints.gridwidth = 500;
-        oGridBagConstraints.anchor = GridBagConstraints.PAGE_START;
-        this.add(oGUITestFileTable, oGridBagConstraints);
+        GridBagConstraints c = new GridBagConstraints();
+        c.gridx = 0; //next added element will be in column 1
+        c.gridy = 0; //next added element will be in row 1
+        c.insets = new Insets(1,1,1,1);
+        this.add(oGUITestFileTable, c);
         updateWindow();
     }
 
diff --git a/src/Frontend/PIC_SIMULATOR_GUI_JAVA/GUITestFileTable.java b/src/Frontend/PIC_SIMULATOR_GUI_JAVA/GUITestFileTable.java
index f447009..bbcc79f 100644
--- a/src/Frontend/PIC_SIMULATOR_GUI_JAVA/GUITestFileTable.java
+++ b/src/Frontend/PIC_SIMULATOR_GUI_JAVA/GUITestFileTable.java
@@ -4,7 +4,7 @@ import java.awt.Dimension;
 import java.awt.GridBagConstraints;
 import java.awt.GridBagLayout;
 import java.awt.GridLayout;
-
+import java.awt.Insets;
 import java.io.BufferedReader;
 import java.io.File;
 import java.io.FileNotFoundException;
@@ -15,6 +15,7 @@ import java.util.ArrayList;
 
 import javax.swing.JCheckBox;
 import javax.swing.JPanel;
+import javax.swing.JScrollBar;
 import javax.swing.JTextField;
 
 public class GUITestFileTable extends JPanel {
@@ -22,64 +23,77 @@ public class GUITestFileTable extends JPanel {
     ArrayList<JCheckBox> oCheckboxes = new ArrayList<JCheckBox>();
 
     public GUITestFileTable() {
-        this.setLayout(new GridBagLayout());
-        GridBagConstraints oGridBagConstraints = new GridBagConstraints();
-        oGridBagConstraints.gridx = 0;
-        oGridBagConstraints.gridy = 0;
-        oGridBagConstraints.gridheight = 20;
-        oGridBagConstraints.gridwidth = 20; //500, 10, 10, 480
         JTextField oFill = new JTextField("19");
         oFill.setEditable(false);
-        this.add(oFill, oGridBagConstraints);
-        oGridBagConstraints.gridx = 20;
-        this.add(new JCheckBox(), oGridBagConstraints);
-        oGridBagConstraints.gridx = 40;
-        oGridBagConstraints.gridwidth = 460;
+        this.setLayout(new GridLayout(1, 3));
+        this.add(oFill);
+        this.add(new JCheckBox());
         oFill = new JTextField("Test");
         oFill.setEditable(false);
-        this.add(oFill, oGridBagConstraints);
+        this.add(oFill);
     }
 
     public void setData(ArrayList<String> data) {
         this.removeAll();
-
+        JScrollBar oScrollBar = new JScrollBar(JScrollBar.VERTICAL, 30, 1, 0, 100);
         int iNumberOfLines = data.size() + 1;
+        JPanel oLines = new JPanel();
+        oLines.add(oScrollBar);//TODO
+        oLines.setLayout(new GridBagLayout());
+        int iHorizontalCount = 0;
+        int iVerticalCount = 0;
+        System.out.println(1);
+        GridBagConstraints l = new GridBagConstraints();
+        l.gridx = iHorizontalCount;
 
-        this.setLayout(new GridBagLayout());
-
-        JPanel oLineNumbers = new JPanel();
-        oLineNumbers.setLayout(new GridLayout(iNumberOfLines, 1));
-        GridBagConstraints oGridBagConstraints = new GridBagConstraints();
-        oGridBagConstraints.gridx = 0;
-        oGridBagConstraints.gridy = 0;
-        oGridBagConstraints.gridwidth = 500;
-        oGridBagConstraints.gridheight = 600;
-
-        JPanel oBreakpoints = new JPanel();
-        oBreakpoints.setLayout(new GridLayout(iNumberOfLines, 1));
-
-        JPanel oFileLines = new JPanel();
-        oFileLines.setLayout(new GridLayout(iNumberOfLines, 1));
+        int iMaxLength = getMaxLen(data);
 
         for (int i = 1; i < iNumberOfLines; i++) {
-            JTextField oTestLine = new JTextField(data.get(i - 1));
-            oTestLine.setEditable(false);
-            oFileLines.add(oTestLine);
-            JCheckBox oCheckbox = new JCheckBox();
-            oCheckbox.setEnabled(false);
-            oCheckboxes.add(oCheckbox);
-            oBreakpoints.add(oCheckbox);
-            JTextField oNumber = new JTextField(i + "");
-            oNumber.setEditable(false);
-            oLineNumbers.add(oNumber);
-        }
+            JPanel oPanel = new JPanel();
+            oPanel.setLayout(new GridBagLayout());
 
-        this.add(oLineNumbers, oGridBagConstraints);
-        this.add(oBreakpoints);
-        this.add(oFileLines);
+            GridBagConstraints c = new GridBagConstraints();
+            c.gridx = 0;
+            c.gridy = 0;
+
+            JTextField oNumber = new JTextField(i + "", 3);
+            oNumber.setEditable(false);
+            oPanel.add(oNumber, c);
+
+            c.gridx = 1;
+
+            JCheckBox oCheckbox = new JCheckBox();
+            oCheckbox.setEnabled(false);      
+            oCheckboxes.add(oCheckbox);
+            oPanel.add(oCheckbox, c);
+
+            c.gridx = 2;
+
+            JTextField oTestLine = new JTextField(data.get(i - 1), iMaxLength);
+            oTestLine.setEditable(false);
+            oPanel.add(oTestLine, c);
+            
+            l.gridy = iVerticalCount;
+            l.anchor = GridBagConstraints.WEST;
+            oLines.add(oPanel, l);
+            iVerticalCount++;
+        }
+        System.out.println(iMaxLength);
+        this.add(oLines);
     }
 
     public ArrayList<JCheckBox> getCheckboxes() {
         return oCheckboxes;
     }
+
+    private int getMaxLen(ArrayList<String> data) {
+        int iSize = data.size();
+        int iMaxLength = 0;
+        for (int i = 0; i < iSize; i++) {
+            if (data.get(i).length() > iMaxLength) {
+                iMaxLength = data.get(i).length();
+            }
+        }
+        return iMaxLength;
+    }
 }