void FixBitInstructions()
{
foreach (Statement st in statements)
{
if (st is ExecutableStatement)
{
ExecutableStatement ex = st as ExecutableStatement;
if (ex.OpCode == "BIT" || ex.OpCode == "RES" || ex.OpCode == "SET")
{
byte b = ex.LeftOperand.GetHexText().ToByte();
/*
* b = (byte)(b << 3);
*
* if (ex.OpCode == "BIT")
* {//and | 01000110
* b = (byte)(b | 01000110);
* }
* else if (ex.OpCode == "RES")
* {//left shit b 3 and | 10000110
* b = (byte)(b | 10000110);
* }
* else if (ex.OpCode == "SET")
* {//left shit b 3 and | 11000110
* b = (byte)(b | 11000110);
* }
*/
if (ex.GetModeText() == "IMMEDIATE,IX_INDEXED_PLUS_OFFSET" ||
ex.GetModeText() == "IMMEDIATE,IY_INDEXED_PLUS_OFFSET")
{//left shit b 3 or byte
//now flip the operands because they
//get written out in reverse order
ex.LeftOperand.Value = ex.RightOperand.Value;
ex.RightOperand.Value = string.Format("{0:2X}", b);
}
}
}
}
}
/// <summary>
/// makes sure the operands are supported
/// </summary>
void ValidateOperands()
{
for (int i = 0; i < statements.Count; i++)
{
Statement s = statements[i];
if (s is ExecutableStatement)
{
ExecutableStatement ex = s as ExecutableStatement;
string mode = ex.GetModeText();
if (!LangDef.LangDef.SupportsMode(ex.OpCode, mode))
{//
throw new Exception(
String.Format(
"Error on line {0}:{3} {1} does not support mode {2}",
i,
ex.OpCode,
mode,
ex.Text)
);
}
}
}
}