private string FormatOperandAddress(TByteSource data, int offset, Cpu65C816Constants.AddressMode mode)
{
var address = data.GetIntermediateAddress(offset);
if (address < 0)
{
return("");
}
if (data is IReadOnlyLabels labelProvider)
{
var label = labelProvider.Labels.GetLabelName(address);
if (label != "")
{
return(label);
}
}
var count = BytesToShow(mode);
if (mode is Cpu65C816Constants.AddressMode.Relative8 or Cpu65C816Constants.AddressMode.Relative16)
{
var romWord = data.GetRomWord(offset + 1);
if (!romWord.HasValue)
{
return("");
}
address = (int)romWord;
}
address &= ~(-1 << (8 * count));
return(Util.NumberToBaseString(address, Util.NumberBase.Hexadecimal, 2 * count, true));
}
private static int GetInstructionLength(Cpu65C816Constants.AddressMode mode)
{
switch (mode)
{
case Cpu65C816Constants.AddressMode.Implied:
case Cpu65C816Constants.AddressMode.Accumulator:
return(1);
case Cpu65C816Constants.AddressMode.Constant8:
case Cpu65C816Constants.AddressMode.Immediate8:
case Cpu65C816Constants.AddressMode.DirectPage:
case Cpu65C816Constants.AddressMode.DirectPageXIndex:
case Cpu65C816Constants.AddressMode.DirectPageYIndex:
case Cpu65C816Constants.AddressMode.DirectPageSIndex:
case Cpu65C816Constants.AddressMode.DirectPageIndirect:
case Cpu65C816Constants.AddressMode.DirectPageXIndexIndirect:
case Cpu65C816Constants.AddressMode.DirectPageIndirectYIndex:
case Cpu65C816Constants.AddressMode.DirectPageSIndexIndirectYIndex:
case Cpu65C816Constants.AddressMode.DirectPageLongIndirect:
case Cpu65C816Constants.AddressMode.DirectPageLongIndirectYIndex:
case Cpu65C816Constants.AddressMode.Relative8:
return(2);
case Cpu65C816Constants.AddressMode.Immediate16:
case Cpu65C816Constants.AddressMode.Address:
case Cpu65C816Constants.AddressMode.AddressXIndex:
case Cpu65C816Constants.AddressMode.AddressYIndex:
case Cpu65C816Constants.AddressMode.AddressIndirect:
case Cpu65C816Constants.AddressMode.AddressXIndexIndirect:
case Cpu65C816Constants.AddressMode.AddressLongIndirect:
case Cpu65C816Constants.AddressMode.BlockMove:
case Cpu65C816Constants.AddressMode.Relative16:
return(3);
case Cpu65C816Constants.AddressMode.Long:
case Cpu65C816Constants.AddressMode.LongXIndex:
return(4);
default:
return(1);
}
}
