public Range(ushort startAddress, ushort endAddress, AddressModifier map, IHaveAddressedMemory handler)
{
StartAddress = startAddress;
EndAddress = endAddress;
Map = map;
Handler = handler;
}
public void MapRange(ushort startAddress, ushort endAddress, AddressModifier addressModifier, IHaveAddressedMemory handler)
{
if (startAddress >= endAddress)
{
throw new Exception("Invalid start and end addresses.");
}
var newRange = new Range(startAddress, endAddress, addressModifier, handler);
TotalBytesAvailable += endAddress - startAddress + 1;
// NB: ranges in sorted order...
Link previous = null;
Enumerator enumerator = GetForwardEnumerator();
while (enumerator.MoveNext())
{
var range = (Range)enumerator.Current;
if (range.EndAddress < startAddress)
{
previous = enumerator.CurrentLink;
continue;
}
if (endAddress < range.StartAddress)
{
InsertAfter(previous, newRange);
return;
}
var message = new StringBuilder("Address range overlaps are not allowed.", 80);
if (previous != null)
{
var previousRange = (Range)previous.Value;
message.Append("\r\n\tPrevious: [");
message.Append(HexString.GetString(previousRange.StartAddress));
message.Append(",");
message.Append(HexString.GetString(previousRange.EndAddress));
message.Append("]");
}
message.Append("\r\n\t **NEW**: [");
message.Append(HexString.GetString(startAddress));
message.Append(",");
message.Append(HexString.GetString(endAddress));
message.Append("]\r\n\t Next: [");
message.Append(HexString.GetString(range.StartAddress));
message.Append(",");
message.Append(HexString.GetString(range.EndAddress));
message.Append("]");
throw new Exception(message.ToString());
}
InsertTail(newRange);
}
