/// <summary>
/// Parses a new disk image and loads it into this floppy drive
/// </summary>
/// <param name="tapeData"></param>
public void FDD_LoadDisk(byte[] diskData)
{
// try dsk first
FloppyDisk fdd = null;
bool found = false;
foreach (DiskType type in Enum.GetValues(typeof(DiskType)))
{
switch (type)
{
case DiskType.CPCExtended:
fdd = new CPCExtendedFloppyDisk();
found = fdd.ParseDisk(diskData);
break;
case DiskType.CPC:
fdd = new CPCFloppyDisk();
found = fdd.ParseDisk(diskData);
break;
case DiskType.IPF:
fdd = new IPFFloppyDisk();
found = fdd.ParseDisk(diskData);
break;
case DiskType.UDI:
fdd = new UDI1_0FloppyDisk();
found = fdd.ParseDisk(diskData);
break;
}
if (found)
{
Disk = fdd;
break;
}
}
if (!found)
{
throw new Exception(this.GetType().ToString() +
"\n\nDisk image file could not be parsed. Potentially an unknown format.");
}
}
public static IPFBlock ParseNextBlock(ref int startPos, FloppyDisk disk, byte[] data, List <IPFBlock> blockCollection)
{
IPFBlock ipf = new IPFBlock();
ipf.StartPos = startPos;
if (startPos >= data.Length)
{
// EOF
return(null);
}
// assume the startPos passed in is actually the start of a new block
// look for record header ident
string ident = Encoding.ASCII.GetString(data, startPos, 4);
startPos += 4;
try
{
ipf.RecordType = (RecordHeaderType)Enum.Parse(typeof(RecordHeaderType), ident);
}
catch
{
ipf.RecordType = RecordHeaderType.None;
}
// setup for actual block size
ipf.BlockLength = MediaConverter.GetBEInt32(data, startPos); startPos += 4;
ipf.CRC = MediaConverter.GetBEInt32(data, startPos); startPos += 4;
ipf.RawBlockData = new byte[ipf.BlockLength];
Array.Copy(data, ipf.StartPos, ipf.RawBlockData, 0, ipf.BlockLength);
switch (ipf.RecordType)
{
// Nothing to process / unknown
// just move ahead
case RecordHeaderType.CAPS:
case RecordHeaderType.TRCK:
case RecordHeaderType.DUMP:
case RecordHeaderType.CTEI:
case RecordHeaderType.CTEX:
default:
startPos = ipf.StartPos + ipf.BlockLength;
break;
// INFO block
case RecordHeaderType.INFO:
// INFO header is followed immediately by an INFO block
ipf.INFOmediaType = MediaConverter.GetBEInt32(data, startPos); startPos += 4;
ipf.INFOencoderType = MediaConverter.GetBEInt32(data, startPos); startPos += 4;
ipf.INFOencoderRev = MediaConverter.GetBEInt32(data, startPos); startPos += 4;
ipf.INFOfileKey = MediaConverter.GetBEInt32(data, startPos); startPos += 4;
ipf.INFOfileRev = MediaConverter.GetBEInt32(data, startPos); startPos += 4;
ipf.INFOorigin = MediaConverter.GetBEInt32(data, startPos); startPos += 4;
ipf.INFOminTrack = MediaConverter.GetBEInt32(data, startPos); startPos += 4;
ipf.INFOmaxTrack = MediaConverter.GetBEInt32(data, startPos); startPos += 4;
ipf.INFOminSide = MediaConverter.GetBEInt32(data, startPos); startPos += 4;
ipf.INFOmaxSide = MediaConverter.GetBEInt32(data, startPos); startPos += 4;
ipf.INFOcreationDate = MediaConverter.GetBEInt32(data, startPos); startPos += 4;
ipf.INFOcreationTime = MediaConverter.GetBEInt32(data, startPos); startPos += 4;
ipf.INFOplatform1 = MediaConverter.GetBEInt32(data, startPos); startPos += 4;
ipf.INFOplatform2 = MediaConverter.GetBEInt32(data, startPos); startPos += 4;
ipf.INFOplatform3 = MediaConverter.GetBEInt32(data, startPos); startPos += 4;
ipf.INFOplatform4 = MediaConverter.GetBEInt32(data, startPos); startPos += 4;
ipf.INFOdiskNumber = MediaConverter.GetBEInt32(data, startPos); startPos += 4;
ipf.INFOcreatorId = MediaConverter.GetBEInt32(data, startPos); startPos += 4;
startPos += 12; // reserved
break;
case RecordHeaderType.IMGE:
ipf.IMGEtrack = MediaConverter.GetBEInt32(data, startPos); startPos += 4;
ipf.IMGEside = MediaConverter.GetBEInt32(data, startPos); startPos += 4;
ipf.IMGEdensity = MediaConverter.GetBEInt32(data, startPos); startPos += 4;
ipf.IMGEsignalType = MediaConverter.GetBEInt32(data, startPos); startPos += 4;
ipf.IMGEtrackBytes = MediaConverter.GetBEInt32(data, startPos); startPos += 4;
ipf.IMGEstartBytePos = MediaConverter.GetBEInt32(data, startPos); startPos += 4;
ipf.IMGEstartBitPos = MediaConverter.GetBEInt32(data, startPos); startPos += 4;
ipf.IMGEdataBits = MediaConverter.GetBEInt32(data, startPos); startPos += 4;
ipf.IMGEgapBits = MediaConverter.GetBEInt32(data, startPos); startPos += 4;
ipf.IMGEtrackBits = MediaConverter.GetBEInt32(data, startPos); startPos += 4;
ipf.IMGEblockCount = MediaConverter.GetBEInt32(data, startPos); startPos += 4;
ipf.IMGEencoderProcess = MediaConverter.GetBEInt32(data, startPos); startPos += 4;
ipf.IMGEtrackFlags = MediaConverter.GetBEInt32(data, startPos); startPos += 4;
ipf.IMGEdataKey = MediaConverter.GetBEInt32(data, startPos); startPos += 4;
startPos += 12; // reserved
break;
case RecordHeaderType.DATA:
ipf.DATAlength = MediaConverter.GetBEInt32(data, startPos);
if (ipf.DATAlength == 0)
{
ipf.DATAextraDataRaw = new byte[0];
ipf.DATAlength = 0;
}
else
{
ipf.DATAextraDataRaw = new byte[ipf.DATAlength];
}
startPos += 4;
ipf.DATAbitSize = MediaConverter.GetBEInt32(data, startPos); startPos += 4;
ipf.DATAcrc = MediaConverter.GetBEInt32(data, startPos); startPos += 4;
ipf.DATAdataKey = MediaConverter.GetBEInt32(data, startPos); startPos += 4;
if (ipf.DATAlength != 0)
{
Array.Copy(data, startPos, ipf.DATAextraDataRaw, 0, ipf.DATAlength);
}
startPos += ipf.DATAlength;
break;
}
return(ipf);
}
