private opperateResultStruct SHL(short Data)
{
Console.WriteLine("CPU: SHL, Data: " + Data);
opperateResultStruct result = new opperateResultStruct();
result.result = Convert.ToByte(Convert.ToByte(ACC) << Convert.ToByte(Data));
result.isACCValue = true;
return(result);
}
private opperateResultStruct LDA(short Data)
{
Console.WriteLine("CPU: LDA, Data: " + Data);
opperateResultStruct result = new opperateResultStruct();
result.result = Data;
result.isACCValue = true;
return(result);
}
private opperateResultStruct DIV(short Data)
{
Console.WriteLine("CPU: DIV, Data: " + Data);
opperateResultStruct result = new opperateResultStruct();
result.result = (short)(ACC / Data); //TODO: Double check this
result.isACCValue = true;
//setCC();
return(result);
}
private opperateResultStruct MUL(short Data)
{
Console.WriteLine("CPU: MUL, Data: " + Data);
opperateResultStruct result = new opperateResultStruct();
result.result = (short)(ACC * Data); //TODO: account for overflow
result.isACCValue = true;
//setCC();
return(result);
}
private opperateResultStruct SUB(short Data)
{
Console.WriteLine("CPU: SUB, Data: " + Data);
opperateResultStruct result = new opperateResultStruct();
result.result = (short)(ACC - Data);
result.isACCValue = true;
//setCC();
return(result);
}
private opperateResultStruct NOTA()
{
Console.WriteLine("CPU: NOTA");
try {
opperateResultStruct result = new opperateResultStruct();
result.result = Convert.ToByte(Convert.ToByte(ACC) ^ 255);
result.isACCValue = true;
return(result);
}
catch (System.OverflowException e)
{
System.Windows.Forms.MessageBox.Show("ACC is not a valid number for NOTA\nExecution Halted");
HLT();
return(new opperateResultStruct());
}
}
private opperateResultStruct STA(short Data)
{
Console.WriteLine("CPU: STA, Data: " + Data);
opperateResultStruct result = new opperateResultStruct();
result.location = (byte)Data;
result.result = (short)ACC;
result.isACCValue = false;
return(result);
/*try
* {
* RAM.setDataAt(Convert.ToByte(Data), Convert.ToInt16(ACC));
* }
* catch(System.OverflowException e)
* {
* System.Windows.Forms.MessageBox.Show("ACC does not fit into memory\nExecution Halted");
* HLT();
* }*/
}
public void Execute()
{
while (!done)
{
executeEvent.WaitOne();
if (executeRuns)
{
Console.WriteLine("In Execute");
store.IRInstruction = execute.IRInstruction;
store.IRData = execute.IRData;
opperateResultStruct result = opperate(execute.IRInstruction, execute.IRData);
store.result = result.result;
store.location = result.location;
store.isACCValue = result.isACCValue;
}
if (OnExecuteDone != null)
{
OnExecuteDone(this, new OperationEventArgs(ThreadType.Execute, this.IR));
}
}
}
public opperateResultStruct opperate(byte Instruction, byte Data)
{
opperateResultStruct result = new opperateResultStruct();
Console.WriteLine("CPU: Operate: Instruction: " + Instruction + " Data: " + Data);
if (Instruction == 0)
{
NOP();
}
else if (Instruction == 128)
{
result = LDA(Data);
}
else if (Instruction == 129)
{
result = LDA(RAM.getDataAt(Data));
}
else if (Instruction == 64)
{
result = STA(Data);
}
else if (Instruction == 192)
{
result = ADD(Data);
}
else if (Instruction == 193)
{
result = ADD(RAM.getDataAt(Data));
}
else if (Instruction == 32)
{
result = SUB(Data);
}
else if (Instruction == 33)
{
result = SUB(RAM.getDataAt(Data));
}
else if (Instruction == 144)
{
result = MUL(Data);
}
else if (Instruction == 145)
{
result = MUL(RAM.getDataAt(Data));
}
else if (Instruction == 80)
{
result = DIV(Data);
}
else if (Instruction == 81)
{
result = DIV(RAM.getDataAt(Data));
}
else if (Instruction == 208)
{
result = AND(Data);
}
else if (Instruction == 209)
{
result = AND(RAM.getDataAt(Data));
}
else if (Instruction == 48)
{
result = OR(Data);
}
else if (Instruction == 49)
{
result = OR(RAM.getDataAt(Data));
}
else if (Instruction == 176)
{
result = SHL(Data);
}
else if (Instruction == 240)
{
result = NOTA();
}
else if (Instruction == 8)
{
result = BA(Data);
}
else if (Instruction == 136)
{
result = BE(Data);
}
else if (Instruction == 72)
{
result = BL(Data);
}
else if (Instruction == 200)
{
result = BG(Data);
}
else if (Instruction == 40)
{
result = BA(Data);
}
else if (Instruction == 168)
{
result = HLT();
}
else
{
throw new ArgumentException("Invalid Instruction");
}
return(result);
}