public Byte[] diskBuffer; // Buffer used to store the entire disk
public OricDisk()
{
// Initialise settings
diskLoaded = false;
diskModified = false;
noOfSides = 0;
tracksPerSide = 0;
sectorsPerTrack = 0;
noOfFiles = 0;
dosFormat = DOSFormats.Unknown;
dosVersion = DOSVersions.Unknown;
diskType = DiskTypes.Unknown;
}
private void IdentifyDosFormat(ref DOSFormats format, ref DOSVersions version)
{
// Identify the DOS format and version of the currently loaded disk
format = DOSFormats.Unknown;
version = DOSVersions.Unknown;
// Firstly lets see if it's a SedOric disk
format = GetDOSFormat(0, 1, ref version, 0x00);
if (format == DOSFormats.Unknown)
{
format = GetDOSFormat(0, 2, ref version, 0xD1);
if (format == DOSFormats.Unknown)
{
format = GetDOSFormat(4, 17, ref version, 0x00);
if (format == DOSFormats.Unknown)
{
format = GetDOSFormat(2, 11, ref version, 0xC8);
if (format == DOSFormats.Unknown)
{
format = GetDOSFormat(0, 1, ref version, 0x22);
if (format == DOSFormats.Unknown)
{
// Check if it is a TDOS disk
Byte[] DosID = ReadSector(20, 1);
if (DosID[0xF6] == 0x80 && DosID[0xF7] == 0x80)
{
format = DOSFormats.TDOS;
version = DOSVersions.TDOS_V3_2;
}
}
}
}
}
}
}
public OricDisk(String diskPathname)
{
// Initialise settings
diskLoaded = false;
diskModified = false;
noOfSides = 0;
tracksPerSide = 0;
sectorsPerTrack = 0;
noOfFiles = 0;
dosFormat = DOSFormats.Unknown;
dosVersion = DOSVersions.Unknown;
diskType = DiskTypes.Unknown;
if (!LoadDisk(diskPathname))
{
diskLoaded = false;
}
else
{
diskLoaded = true;
}
}
private DOSFormats GetDOSFormat(Byte track, Byte sector, ref DOSVersions version, Byte offset)
{
DOSFormats format = DOSFormats.Unknown;
Byte[] sectorData = ReadSector(track, sector);
System.IO.MemoryStream memoryStream = new System.IO.MemoryStream(sectorData, 0, sectorData.Length);
System.IO.BinaryReader binaryReader = new System.IO.BinaryReader(memoryStream);
// Move to where the version string starts
if (offset == 0x00)
{
memoryStream.Seek(0x40, SeekOrigin.Begin);
}
else
{
memoryStream.Seek(offset, SeekOrigin.Begin);
}
Byte[] dosFormat = new Byte[8];
dosFormat = binaryReader.ReadBytes(8);
String dosFormatString = AsciiEncoder.GetString(dosFormat).Trim();
if (dosFormatString.Equals("SEDORIC"))
{
format = DOSFormats.SedOric;
// Now get the version string
dosFormat = binaryReader.ReadBytes(6);
char[] delimiters = new char[3];
delimiters[0] = '\r';
delimiters[1] = '\n';
delimiters[2] = ' ';
String dosVersionString = AsciiEncoder.GetString(dosFormat).Trim(delimiters);
switch (dosVersionString)
{
case "V1.004":
version = DOSVersions.SedOric_V1_004;
break;
case "V1.005":
version = DOSVersions.SedOric_V1_005;
break;
case "V1.006":
version = DOSVersions.SedOric_V1_006;
break;
case "V1.007":
version = DOSVersions.SedOric_V1_007;
break;
case "V2.1":
version = DOSVersions.SedOric_V2_1;
break;
case "V3.0":
version = DOSVersions.SedOric_V3_006;
break;
case "V3.006":
version = DOSVersions.SedOric_V3_006;
break;
default:
version = DOSVersions.Unknown;
break;
}
}
else if (dosFormatString.Equals("Oric DOS"))
{
format = DOSFormats.OricDOS;
version = DOSVersions.OricDOS_V1_13;
}
else if (dosFormatString.Equals("STRATSED"))
{
format = DOSFormats.StratSed;
version = DOSVersions.Stratsed_V2_0_c;
}
else if (dosFormatString.StartsWith("XL DOS"))
{
format = DOSFormats.XLDos;
version = DOSVersions.XLDos_V0_6;
}
return(format);
}
