private void ProcessLine(string line)
{
HexLine hexLine = HexLine.Parse(line);
Address baseAddress = 0x000000; //always 0, not used currently
switch (hexLine.RecordType)
{
case RecordType.Data:
List <Word> words = hexLine.Data.ToLittleEndians(); //Reading little endian data
Address byteAddress = (Address)(baseAddress + hexLine.Address); //not used. correcting address if it is Extended Address
Address wordAddress = (Address)(byteAddress >> 1); //Byte to Word address
blocks.Add(new MemoryBlock(wordAddress, words));
break;
case RecordType.EndOfFile:
MergeBlocks();
break;
case RecordType.ExtendedSegmentAddress:
//baseAddress = ((Address)hexLine.Data.ReadBigEndianWord(0)) << 4;
//break;
case RecordType.ExtendedLinearAddress:
//baseAddress = ((Address)hexLine.Data.ReadBigEndianWord(0)) << 16;
//break;
case RecordType.StartSegmentAddress:
case RecordType.StartLinearAddress:
throw new NotSupportedException();
default:
throw new Exception($"Unknown {nameof(RecordType)} {hexLine.RecordType:X}");
}
}
public bool Parse(string fn, int maxBlockSize = 256)
{
var ret = false;
try
{
using (var reader = File.OpenText(fn))
{
string line;
UInt32 addrPrefix = 0;
while ((line = reader.ReadLine()) != null)
{
HexLine hexLine = new HexLine();
if (!hexLine.Parse(line))
{
return(false);
}
if (hexLine.Type == HexLine.HexLineType.ExtendedLinearAddress)
{
addrPrefix = hexLine.Addr << 16;
}
else if (hexLine.Type == HexLine.HexLineType.StartLinearAddress)
{
EntryPoint = hexLine.Addr;
}
else if (hexLine.Type == HexLine.HexLineType.EndOfFile)
{
ret = true;
break;
}
else if (hexLine.Type == HexLine.HexLineType.Data)
{
var addr = addrPrefix | hexLine.Addr;
MemoryBlock block = null;
try
{
block = Blocks.Find(v =>
v.StartAddr < addr && v.StartAddr + v.Length == addr && v.Length + hexLine.Content.Length <= maxBlockSize);
}
catch (Exception)
{
// ignore
}
if (block == null)
{
block = new MemoryBlock();
block.StartAddr = addr;
Blocks.Add(block);
}
block.Content.AddRange(hexLine.Content);
}
}
}
}
catch (Exception)
{
// ignore
}
return(ret);
}