public InstructionJump(Instruction instruction)
{
this.opCode = instruction.opCode;
this.format = instruction.format;
this.parameter = instruction.parameter;
this.Address = Convert.ToInt32(instruction.parameter, 2);
}
public InstructionIO(Instruction instruction)
{
this.opCode = instruction.opCode;
this.format = instruction.format;
this.parameter = instruction.parameter;
this.Reg1 = Convert.ToInt32(instruction.parameter.Substring(0, 4), 2);
this.Reg2 = Convert.ToInt32(instruction.parameter.Substring(4, 4), 2);
this.Address = Convert.ToInt32(instruction.parameter.Substring(8, instruction.parameter.Length - 8), 2);
}
public InstructionBranchAndImmediate(Instruction instruction)
{
this.opCode = instruction.opCode;
this.format = instruction.format;
this.parameter = instruction.parameter;
this.BReg = Convert.ToInt32(instruction.parameter.Substring(0, 4), 2);
this.DReg = Convert.ToInt32(instruction.parameter.Substring(4, 4), 2);
this.Address = Convert.ToInt32(instruction.parameter.Substring(8, this.parameter.Length - 8), 2);
}
public InstructionArithmetic(Instruction instruction)
{
this.opCode = instruction.opCode;
this.format = instruction.format;
this.parameter = instruction.parameter;
this.SReg1 = Convert.ToInt32(instruction.parameter.Substring(0, 4), 2);
this.SReg2 = Convert.ToInt32(instruction.parameter.Substring(4, 4), 2);
this.DReg = Convert.ToInt32(instruction.parameter.Substring(8, 4), 2); ;
}
private void execute()
{
string format = currentInstruction.format;
if (currentInstruction.opCode.Equals("010011"))//nop
{
//do nothing
}
else if (format.Equals("00"))
{
currentInstruction = new InstructionArithmetic(currentInstruction);
Arithmetic();
}
else if (format.Equals("01"))
{
currentInstruction = new InstructionBranchAndImmediate(currentInstruction);
BranchAndImmidiate();
}
else if (format.Equals("10"))
{
currentInstruction = new InstructionJump(currentInstruction);
Jump();
}
else if (format.Equals("11"))
{
currentInstruction = new InstructionIO(currentInstruction);
InputOutput();
}
else
{
throw new InvalidOperationException("Instruction format is invalid");
}
}
private void decode()
{
int length;
Console.Out.WriteLine(programCache.Trim());
Dispatcher dis = Dispatcher.GetInstance();
Ram rm = Ram.GetInstance();
String hexValue = programCache.Trim().Substring(2);
String binary = "";
for (int i = 0; i < hexValue.Length; i++)
{
binary += hextobinary(hexValue[i]);
}
currentInstruction = new Instruction(binary);
length = binary.Length;
}