Solved

reseting

Posted on 2004-03-29
4
201 Views
Last Modified: 2010-03-31
Guys I got a problem. I am working on my CPU simulator. Now I want to implement the reset button that when I press the simulator goes to its original state.

I have got a textArea where I put the assembly code. So I have to take the code and break it and put into the memory of the simulator. I am able to break the code using the stringtokenizer and put it into the memory of the simulator.

To reset, I set all the strings to null string and all the numbers to 0. When I press the reset button, it clears every nicely, but the problem is when I change the assembly code, it does not take the new code and put it into the memory of the simulator, it uses the old previous code. Why because I cleared everthing? How can I do it successfully?

Here is my Reset method:

 public void reset()
{
      ypos=70;
      xpos=245;
      clearRegisters();
      clear();
      repaint(xpos-dx,ypos-dy,r,r);
      stop();
   repaint();

}

Reset is calling clearRegisters and clear, and they as follows:

public void clear()
{
      PCint = 0;
      MARint = 0;
      MBRint = 0;
      ACint = 0;
      ALU = "";
      trackOp = "";
      AC = "";

      content0 = "";
      content1 = "";
      content2 = "";
      content3 = "";
      content4 = "";
      content5 = "";
      content6 = "";
      content7 = "";
      content8 = "";
      content9 = "";
      content10 = "";

      tempc0 = "";
      tempc1 = "";
      tempc2 = "";
      tempc3 = "";
      tempc4 = "";
      tempc5 = "";
      tempc6 = "";
      tempc7 = "";
      tempc8 = "";
      tempc9 = "";
      dataAddress1 = "";
      dataAddress2 = "";
      dataAddress3 = "";
      dataAddress4 = "";
      dataAddress5 = "";
      dataAddress6 = "";
      dataAddress7 = "";
      dataAddress8 = "";
      dataAddress9 = "";
      dataAddress10 = "";
      operation = "";
      r=0;
      
}

public  void clearRegisters()
{      
      PC = "00000000";
      MAR = "00000000";
      MBR = "00000000";
      AC = "00000000";
      IR = "00000000";
}

All this strings I use to fill the registers and memory. content0 to content10 is for memory.

The following code I use to break the code I get from the textArea:

public void BreakCode(String text)
{
      int i=0;
   int j=0;
      int opInd=0;
      int datInd=0;
      int output=0;
      
      StringTokenizer st = new StringTokenizer(text, "\n \\s");
      
      while (st.hasMoreTokens()){      
      
            v.addElement(st.nextToken());

            
            if ((j%2) == 1) {
                  if ((v.elementAt(j-1).toString()).equalsIgnoreCase("LDA"))
                        output = Integer.parseInt(v.elementAt(j).toString());
                  else if ((v.elementAt(j-1).toString()).equalsIgnoreCase("ADD"))
                        output = output +      Integer.parseInt(v.elementAt(j).toString());       
                  else if ((v.elementAt(j-1).toString()).equalsIgnoreCase("SUB"))
                        output = output - Integer.parseInt(v.elementAt(j).toString());
            }
      

      switch(i)
            {
                  case 0:tempc0 = v.elementAt(i).toString();
                               break;
                  case 1:tempc1 = v.elementAt(i).toString();
                               break;
                  case 2:tempc2 = v.elementAt(i).toString();
                               break;
                  case 3:tempc3 = v.elementAt(i).toString();
                               break;
                  case 4:tempc4 = v.elementAt(i).toString();
                               break;
                  case 5:tempc5 = v.elementAt(i).toString();
                               break;
                  case 6:tempc6 = v.elementAt(i).toString();
                               break;
                  case 7:tempc7 = v.elementAt(i).toString();
                               break;
                  case 8:tempc8 = v.elementAt(i).toString();
                               break;
                  case 9:tempc9 = v.elementAt(i).toString();
        }
   
            if ( tempc0.equalsIgnoreCase ("ADD" ) ){
                   content0 = opcodeADD;
                   dataAddress1 = "001";
            }
            else if ( tempc0.equalsIgnoreCase ("SUB" ) ){
                   content0 = opcodeSUB;
                   dataAddress1 = "001";
            }
            else if ( tempc0.equalsIgnoreCase ("LDA" ) ){
                   content0 = opcodeLDA;
                   dataAddress1 = "001";
            }
            else if ( tempc0.equalsIgnoreCase ("INC" ) ){
                   content0 = opcodeINC;
                   dataAddress1 = "001";
            }
            else
                   content0 = tempc0;


            if ( tempc1.equalsIgnoreCase ("ADD" ) ){
                   content1 = opcodeADD;
                   dataAddress2 = "002";
            }
            else if ( tempc1.equalsIgnoreCase ("SUB" ) ){
                   content1 = opcodeSUB;
                   dataAddress2 = "002";
            }
            else if ( tempc1.equalsIgnoreCase ("LDA" ) ){
                   content1 = opcodeLDA;
                   dataAddress2 = "002";
            }
            else if ( tempc1.equalsIgnoreCase ("INC" ) ){
                   content1 = opcodeINC;
                   dataAddress2 = "002";
            }
            else
                   content1 = tempc1;


            if ( tempc2.equalsIgnoreCase ("ADD" ) ) {
                   content2 = opcodeADD;
                   dataAddress3 = "003";
            }
            else if ( tempc2.equalsIgnoreCase ("SUB" ) ){
                   content2 = opcodeSUB;
                   dataAddress3 = "003";
            }
            else if ( tempc2.equalsIgnoreCase ("LDA" ) ){
                   content2 = opcodeLDA;
                    dataAddress3 = "003";
            }
            else if ( tempc2.equalsIgnoreCase ("INC" ) ){
                   content2 = opcodeINC;
                   dataAddress3 = "003";
            }
            else
                   content2 = tempc2;


            if ( tempc3.equalsIgnoreCase ("ADD" ) ){
                   content3 = opcodeADD;
                   dataAddress4 = "004";
            }
            else if ( tempc3.equalsIgnoreCase ("SUB" ) ){
                   content3 = opcodeSUB;
                   dataAddress4 = "004";
            }

            else if ( tempc3.equalsIgnoreCase ("LDA" ) ){
                   content3 = opcodeLDA;
                   dataAddress4 = "004";
            }

            else if ( tempc3.equalsIgnoreCase ("INC" ) ){
                   content3 = opcodeINC;
                   dataAddress4 = "004";
            }

            else
                   content3 = tempc3;


            if ( tempc4.equalsIgnoreCase ("ADD" ) ) {
                   content4 = opcodeADD;
                   dataAddress5 = "005";
            }

            else if ( tempc4.equalsIgnoreCase ("SUB" ) ){
                   content4 = opcodeSUB;
                   dataAddress5 = "005";
            }
            else if ( tempc4.equalsIgnoreCase ("LDA" ) ){
                   content4 = opcodeLDA;
                   dataAddress5 = "005";
            }
            else if ( tempc4.equalsIgnoreCase ("INC" ) ){
                   content4 = opcodeINC;
                   dataAddress5 = "005";
            }
            else
                   content4 = tempc4;


            if ( tempc5.equalsIgnoreCase ("ADD" ) ){
                   content5 = opcodeADD;
                   dataAddress6 = "006";
            }
            else if ( tempc5.equalsIgnoreCase ("SUB" ) ){
                   content5 = opcodeSUB;
                   dataAddress6 = "006";
            }
            else if ( tempc5.equalsIgnoreCase ("LDA" ) ){
                   content5 = opcodeLDA;
                   dataAddress6 = "006";
            }
            else if ( tempc5.equalsIgnoreCase ("INC" ) ){
                   content5 = opcodeINC;
                   dataAddress6 = "006";
            }
            else
                   content5 = tempc5;


            if ( tempc6.equalsIgnoreCase ("ADD" ) ) {
                   content6 = opcodeADD;
                   dataAddress7 = "007";
            }
            else if ( tempc6.equalsIgnoreCase ("SUB" ) ){
                   content6 = opcodeSUB;
                   dataAddress7 = "007";
            }
            else if ( tempc6.equalsIgnoreCase ("LDA" ) ){
                   content6 = opcodeLDA;
                   dataAddress7 = "007";
            }
            else if ( tempc6.equalsIgnoreCase ("INC" ) ){
                   content6 = opcodeINC;
                   dataAddress7 = "007";
            }
            else
                   content6 = tempc6;



            if ( tempc7.equalsIgnoreCase ("ADD" ) ){
                   content7 = opcodeADD;
                   dataAddress8 = "008";
            }
            else if ( tempc7.equalsIgnoreCase ("SUB" ) ){
                   content7 = opcodeSUB;
                   dataAddress8 = "008";
            }
            else if ( tempc7.equalsIgnoreCase ("LDA" ) ){
                   content7 = opcodeLDA;
                   dataAddress8 = "008";
            }
            else if ( tempc7.equalsIgnoreCase ("INC" ) ){
                   content7 = opcodeINC;
                   dataAddress8 = "008";
            }
            else
                   content7 = tempc7;

      

            if ( tempc8.equalsIgnoreCase ("ADD" ) ) {
                   content8 = opcodeADD;
                   dataAddress9 = "009";
            }
            else if ( tempc8.equalsIgnoreCase ("SUB" ) ){
                   content8 = opcodeSUB;
                   dataAddress9 = "009";
            }
            else if ( tempc8.equalsIgnoreCase ("LDA" ) ){
                   content8 = opcodeLDA;
                   dataAddress9 = "009";
            }
            else if ( tempc8.equalsIgnoreCase ("INC" ) ){
                   content8 = opcodeINC;
                   dataAddress9 = "009";
            }
            else
                   content8 = tempc8;


            if ( tempc9.equalsIgnoreCase ("ADD" ) ){
                   content9 = opcodeADD;
                   dataAddress10 = "010";
            }
            else if ( tempc9.equalsIgnoreCase ("SUB" ) ){
                   content9 = opcodeSUB;
                   dataAddress10 = "010";
            }
            else if ( tempc9.equalsIgnoreCase ("LDA" ) ){
                   content9 = opcodeLDA;
                   dataAddress10 = "010";
            }
            else if ( tempc9.equalsIgnoreCase ("INC" ) ){
                   content9 = opcodeINC;
                   dataAddress10 = "010";
            }
            else
                   content9 = tempc9;

            j+=1;
            i+=1;
      }
      //repaint();
      result = Integer.toString(output);

}




0
Comment
Question by:krizmotlhala
4 Comments
 
LVL 5

Accepted Solution

by:
twobitadder earned 500 total points
ID: 10707490
After you reset are you reading a new value in for the parameter 'text'?

You need this to be the new text from the textArea then you can pass it in to breakCode(String text)

Also:
stop() stops a thread by throwing it a ThreadDeath error.

You kill a thread when you reset.
0
 
LVL 37

Expert Comment

by:zzynx
ID: 10707664
>> it uses the old previous code

1) Your Strings are all cleared. That's for sure.
2) Nevertheless, when you call BreakCode() again it produces the same output

Conclusion: (as twobitadder said)

==> you call BreakCode() with the same text parameter as before.

btw. In java functions better start with a lower case letter: breakCode() [ while classes start with an upper case ]
0

Featured Post

On Demand Webinar - Networking for the Cloud Era

This webinar discusses:
-Common barriers companies experience when moving to the cloud
-How SD-WAN changes the way we look at networks
-Best practices customers should employ moving forward with cloud migration
-What happens behind the scenes of SteelConnect’s one-click button

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
servlet and mdb, jms error 1 54
java example issue 5 42
jmeter usage 4 33
Java List 4 33
Java contains several comparison operators (e.g., <, <=, >, >=, ==, !=) that allow you to compare primitive values. However, these operators cannot be used to compare the contents of objects. Interface Comparable is used to allow objects of a cl…
Introduction This article is the last of three articles that explain why and how the Experts Exchange QA Team does test automation for our web site. This article covers our test design approach and then goes through a simple test case example, how …
Viewers learn about the “while” loop and how to utilize it correctly in Java. Additionally, viewers begin exploring how to include conditional statements within a while loop and avoid an endless loop. Define While Loop: Basic Example: Explanatio…
Viewers will learn about the different types of variables in Java and how to declare them. Decide the type of variable desired: Put the keyword corresponding to the type of variable in front of the variable name: Use the equal sign to assign a v…

735 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question