// convert assembly code to bytecode
private static bool AssembleCode(string file)
{
Output.Clear();
// parse lines
for (int i = 0; i < LabelOutput.Count; i++)
{
// get current line
LabelOutput[i] = LabelOutput[i].Replace(",", "");
string line = LabelOutput[i];
// get arguments
List <string> args = StringArrayToList(line.Split(' '));
// remove blank arguments
for (int j = 0; j < args.Count; j++)
{
args[j] = StringRemoveBlanks(args[j].ToCharArray());
if (IsBlank(args[j]))
{
args.RemoveAt(j); j--;
}
}
if (LabelOutput[i].Length > 1 && args[0] != "SHORT" && args[0] != "BYTE" && args[0] != "CHAR" && args[0] != "WORD")
{
for (int j = 0; j < Instructions.List.Count; j++)
{
// is instruction valid?
if (args[0] == Instructions.List[j].Name)
{
// add instruction
Output.Add(Instructions.List[j].OpCode);
string format = Instructions.List[j].Format;
if (Instructions.List[j].Arguments == 0)
{
break;
}
if (format == "b")
{
byte b = (byte)ParseArgument(args[1]);
Output.Add(b);
}
else if (format == "s")
{
ushort addr = (ushort)ParseArgument(args[1]);
byte left = (byte)((addr & 0xFF00) >> 8);
byte right = (byte)(addr & 0x00FF);
Output.Add(left);
Output.Add(right);
}
else if (format == "bb")
{
byte b1 = (byte)(ParseArgument(args[1]));
byte b2 = (byte)(ParseArgument(args[2]));
Output.Add(b1);
Output.Add(b2);
}
else if (format == "bs")
{
bool ignore = false;
for (int n = 0; n < Variables.Count; n++)
{
if (args[1] == Variables[n].Name)
{
ignore = true; break;
}
else
{
ignore = false;
}
}
if (!ignore)
{
byte b = (byte)(ParseArgument(args[1]));
ushort addr = (ushort)ParseArgument(args[2]);
byte left = (byte)((addr & 0xFF00) >> 8);
byte right = (byte)(addr & 0x00FF);
Output.Add(b);
Output.Add(left);
Output.Add(right);
}
}
else if (format == "bbb")
{
byte b1 = (byte)(ParseArgument(args[1]));
byte b2 = (byte)(ParseArgument(args[2]));
byte b3 = (byte)(ParseArgument(args[3]));
Output.Add(b1);
Output.Add(b2);
Output.Add(b3);
}
else
{
CLI.Write("[ERROR] ", Color.Red); CLI.WriteLine("Invalid arguments at line " + i.ToString());
}
break;
}
}
}
}
// write output
CLI.WriteLine("Displaying binary output: ", Color.Gray);
int l = CLI.CursorY;
for (int j = 0; j < Output.Count; j++)
{
if (l >= CLI.Height)
{
Console.ReadLine(); Console.Clear(); l = 0;
}
CLI.Write(IntToHex(Output[j], "X2"), Color.Magenta);
if (CLI.CursorX < 77)
{
CLI.Write(" ");
}
else
{
CLI.WriteLine(""); l++;
}
}
CLI.WriteLine("");
// save file
PMFAT.WriteAllBytes(file, Output.ToArray());
return(true);
}
