/*End Chase's Code*/
/*/////NEXT BUTTON/////////*/
/*Begin Chase's Code*/
//Move to the next instruction
private void Next_Button_Click(object sender, EventArgs e)
{
txtAccumulator.Text = f.GetAccumulator().ToString();
//declare variables
DataGridViewRow row;
string user_input = "";
string instruction = f.GetNextInstruction();
int opcode = int.Parse(instruction.Substring(0, 2));
int location = 0;
if (opcode != 43)
{
string str_location = Start_DataGridView[0, (f.GetProgramCtr() + 1)].Value.ToString();
location = int.Parse(str_location);
}
else
{
location = 0;
}
//initialize row
row = (DataGridViewRow)Start_DataGridView.Rows[0];
//interpret opcode
switch (opcode)
{
//READ OPCODE
case 10:
{
//ask user for input
if (Start_DataGridView[2, f.GetProgramCtr()].Value.ToString() == "")
{
Start_DataGridView[2, f.GetProgramCtr()].Value = "ERROR";
break;
}
else
{
user_input = Start_DataGridView[2, f.GetProgramCtr()].Value.ToString();
//Put user input into the array
f.Read(user_input, location);
//highlight next instruction
UnhighlightRow(row, f.GetProgramCtr(), false);
f.IncrementProgramCtr(); //skip memory address
f.IncrementProgramCtr();
break;
}
}
//WRITE OPCODE
case 11:
{
string number_in_address = "";
number_in_address = f.Write(location);
Start_DataGridView[2, f.GetProgramCtr()].Value = number_in_address;
//Write to Output box
txtOutput.Text += number_in_address + "\n";
//highlight next instruction
UnhighlightRow(row, f.GetProgramCtr(), false);
f.IncrementProgramCtr();
f.IncrementProgramCtr();
break;
}
//LOAD OPCODE
case 20:
{
f.Load(location);
Start_DataGridView[2, f.GetProgramCtr()].Value = f.GetInstructionAt(location) + " -> accumulator";
//highlight next instruction
UnhighlightRow(row, f.GetProgramCtr(), false);
f.IncrementProgramCtr();
f.IncrementProgramCtr();
break;
}
//STORE OPCODE
case 21:
{
f.Store(location);
Start_DataGridView[2, f.GetProgramCtr()].Value = "Stored " + f.GetInstructionAt(location) + " from accumulator -> " + location;
//highlight next instruction
UnhighlightRow(row, f.GetProgramCtr(), false);
f.IncrementProgramCtr();
f.IncrementProgramCtr();
break;
}
//ADD OPCODE
case 30:
{
int lho = f.GetAccumulator();
int rho = int.Parse(f.GetInstructionAt(location));
int sum = f.ADD(lho, rho);
f.SetAccumulator(sum);
Start_DataGridView[2, f.GetProgramCtr()].Value = f.GetInstructionAt(location) + " added -> accumulator";
//highlight next instruction
UnhighlightRow(row, f.GetProgramCtr(), false);
f.IncrementProgramCtr();
f.IncrementProgramCtr();
break;
}
//SUBTRACT OPCODE
case 31:
{
int lho = f.GetAccumulator();
int rho = int.Parse(f.GetInstructionAt(location));
int difference = f.SUBTRACT(lho, rho);
f.SetAccumulator(difference);
Start_DataGridView[2, f.GetProgramCtr()].Value = f.GetInstructionAt(location) + " subtracted -> accumulator";
//highlight next instruction
UnhighlightRow(row, f.GetProgramCtr(), false);
f.IncrementProgramCtr();
f.IncrementProgramCtr();
break;
}
//DIVIDE OPCODE
case 32:
{
int lho = f.GetAccumulator();
int rho = int.Parse(f.GetInstructionAt(location));
if (rho == 0)
{
MessageBox.Show("Cannot divide by zero... exiting...");
Application.Exit();
}
int remainder = 0;
int quotient = f.DIVIDE(lho, rho, ref remainder);
f.SetAccumulator(quotient);
f.SetOverflow(remainder);
Start_DataGridView[2, f.GetProgramCtr()].Value = f.GetInstructionAt(location) + " divided -> accumulator";
//highlight next instruction
UnhighlightRow(row, f.GetProgramCtr(), false);
f.IncrementProgramCtr();
f.IncrementProgramCtr();
break;
}
//MULTIPLY
case 33:
{
int lho = f.GetAccumulator();
int rho = int.Parse(f.GetInstructionAt(location));
int product = f.MULTIPLY(lho, rho);
f.SetAccumulator(product);
Start_DataGridView[2, f.GetProgramCtr()].Value = f.GetInstructionAt(location) + " multiply -> accumulator";
UnhighlightRow(row, f.GetProgramCtr(), false);
f.IncrementProgramCtr();
f.IncrementProgramCtr();
break;
}
/*Control Opcodes*/
//branch positive
case 40:
{
if (f.GetAccumulator() > 0)
{
UnhighlightRow(row, location, true);
f.Branch_Positive(location);
break;
}
else
{
f.IncrementProgramCtr();
UnhighlightRow(row, f.GetProgramCtr(), false);
break;
}
}
//branch negative
case 41:
{
if (f.GetAccumulator() < 0)
{
UnhighlightRow(row, location, true);
f.Branch_Positive(location);
break;
}
else
{
f.IncrementProgramCtr();
UnhighlightRow(row, f.GetProgramCtr(), false);
break;
}
}
//branch zero
case 42:
{
if (f.GetAccumulator() == 0)
{
UnhighlightRow(row, location, true);
f.Branch_Positive(location);
break;
}
else
{
f.IncrementProgramCtr();
UnhighlightRow(row, f.GetProgramCtr(), false);
break;
}
}
/*Begin Chase's Code*/
//halt command
//Start of Benny code
case 43:
{
const int MAX_INSTR = 1000;
const int MAX_COL = 100;
print = "";
//New method for expanded memory
//Gives the top header row for the first 20
for (int i = 0; i < MAX_COL; i++)
{
print += "\t0" + i;
}
print += "\r\n";
for (int i = 0; i < MAX_INSTR; i++)
{
if (0 == i % 100)
{
print += i + "\t";
}
if (99 == i % 100)
{
print += f.GetInstructionForMemDump(i) + "\r\n";
}
else
{
print += f.GetInstructionForMemDump(i) + "\t";
}
}
//Still need this to show new form
dump = new WindowsFormsApp.MemDumpFrm();
dump.dumpHere = print;
dump.accumValue = f.GetAccumulator();
dump.Show();
break;
}
default:
break;
}
}
