static int SizeCodeToBytes(IBMSectorSizeCode code)
{
switch (code)
{
case IBMSectorSizeCode.EighthKilo: return(128);
case IBMSectorSizeCode.QuarterKilo: return(256);
case IBMSectorSizeCode.HalfKilo: return(512);
case IBMSectorSizeCode.Kilo: return(1024);
case IBMSectorSizeCode.TwiceKilo: return(2048);
case IBMSectorSizeCode.FriceKilo: return(4096);
case IBMSectorSizeCode.TwiceFriceKilo: return(8192);
case IBMSectorSizeCode.FricelyFriceKilo: return(16384);
default: return(0);
}
}
public bool Open(IFilter imageFilter)
{
Stream stream = imageFilter.GetDataForkStream();
stream.Seek(0, SeekOrigin.Begin);
// Even if disk name is supposedly ASCII, I'm pretty sure most emulators allow Shift-JIS to be used :p
var shiftjis = Encoding.GetEncoding("shift_jis");
if (stream.Length < Marshal.SizeOf <D88Header>())
{
return(false);
}
byte[] hdrB = new byte[Marshal.SizeOf <D88Header>()];
stream.Read(hdrB, 0, hdrB.Length);
D88Header d88Hdr = Marshal.ByteArrayToStructureLittleEndian <D88Header>(hdrB);
AaruConsole.DebugWriteLine("D88 plugin", "d88hdr.name = \"{0}\"",
StringHandlers.CToString(d88Hdr.name, shiftjis));
AaruConsole.DebugWriteLine("D88 plugin", "d88hdr.reserved is empty? = {0}",
d88Hdr.reserved.SequenceEqual(_reservedEmpty));
AaruConsole.DebugWriteLine("D88 plugin", "d88hdr.write_protect = 0x{0:X2}", d88Hdr.write_protect);
AaruConsole.DebugWriteLine("D88 plugin", "d88hdr.disk_type = {0} ({1})", d88Hdr.disk_type,
(byte)d88Hdr.disk_type);
AaruConsole.DebugWriteLine("D88 plugin", "d88hdr.disk_size = {0}", d88Hdr.disk_size);
if (d88Hdr.disk_size != stream.Length)
{
return(false);
}
if (d88Hdr.disk_type != DiskType.D2 &&
d88Hdr.disk_type != DiskType.Dd2 &&
d88Hdr.disk_type != DiskType.Hd2)
{
return(false);
}
if (!d88Hdr.reserved.SequenceEqual(_reservedEmpty))
{
return(false);
}
int trkCounter = 0;
foreach (int t in d88Hdr.track_table)
{
if (t > 0)
{
trkCounter++;
}
if (t < 0 ||
t > stream.Length)
{
return(false);
}
}
AaruConsole.DebugWriteLine("D88 plugin", "{0} tracks", trkCounter);
if (trkCounter == 0)
{
return(false);
}
hdrB = new byte[Marshal.SizeOf <SectorHeader>()];
stream.Seek(d88Hdr.track_table[0], SeekOrigin.Begin);
stream.Read(hdrB, 0, hdrB.Length);
SectorHeader sechdr = Marshal.ByteArrayToStructureLittleEndian <SectorHeader>(hdrB);
AaruConsole.DebugWriteLine("D88 plugin", "sechdr.c = {0}", sechdr.c);
AaruConsole.DebugWriteLine("D88 plugin", "sechdr.h = {0}", sechdr.h);
AaruConsole.DebugWriteLine("D88 plugin", "sechdr.r = {0}", sechdr.r);
AaruConsole.DebugWriteLine("D88 plugin", "sechdr.n = {0}", sechdr.n);
AaruConsole.DebugWriteLine("D88 plugin", "sechdr.spt = {0}", sechdr.spt);
AaruConsole.DebugWriteLine("D88 plugin", "sechdr.density = {0}", sechdr.density);
AaruConsole.DebugWriteLine("D88 plugin", "sechdr.deleted_mark = {0}", sechdr.deleted_mark);
AaruConsole.DebugWriteLine("D88 plugin", "sechdr.status = {0}", sechdr.status);
AaruConsole.DebugWriteLine("D88 plugin", "sechdr.size_of_data = {0}", sechdr.size_of_data);
short spt = sechdr.spt;
IBMSectorSizeCode bps = sechdr.n;
bool allEqual = true;
_sectorsData = new List <byte[]>();
for (int i = 0; i < trkCounter; i++)
{
stream.Seek(d88Hdr.track_table[i], SeekOrigin.Begin);
stream.Read(hdrB, 0, hdrB.Length);
SortedDictionary <byte, byte[]> sectors = new SortedDictionary <byte, byte[]>();
sechdr = Marshal.ByteArrayToStructureLittleEndian <SectorHeader>(hdrB);
if (sechdr.spt != spt ||
sechdr.n != bps)
{
AaruConsole.DebugWriteLine("D88 plugin",
"Disk tracks are not same size. spt = {0} (expected {1}), bps = {2} (expected {3}) at track {4} sector {5}",
sechdr.spt, spt, sechdr.n, bps, i, 0);
allEqual = false;
}
short maxJ = sechdr.spt;
byte[] secB;
for (short j = 1; j < maxJ; j++)
{
secB = new byte[sechdr.size_of_data];
stream.Read(secB, 0, secB.Length);
sectors.Add(sechdr.r, secB);
stream.Read(hdrB, 0, hdrB.Length);
sechdr = Marshal.ByteArrayToStructureLittleEndian <SectorHeader>(hdrB);
if (sechdr.spt == spt &&
sechdr.n == bps)
{
continue;
}
AaruConsole.DebugWriteLine("D88 plugin",
"Disk tracks are not same size. spt = {0} (expected {1}), bps = {2} (expected {3}) at track {4} sector {5}",
sechdr.spt, spt, sechdr.n, bps, i, j, sechdr.deleted_mark);
allEqual = false;
}
secB = new byte[sechdr.size_of_data];
stream.Read(secB, 0, secB.Length);
sectors.Add(sechdr.r, secB);
foreach (KeyValuePair <byte, byte[]> kvp in sectors)
{
_sectorsData.Add(kvp.Value);
}
}
AaruConsole.DebugWriteLine("D88 plugin", "{0} sectors", _sectorsData.Count);
_imageInfo.MediaType = MediaType.Unknown;
if (allEqual)
{
if (trkCounter == 154 &&
spt == 26 &&
bps == IBMSectorSizeCode.EighthKilo)
{
_imageInfo.MediaType = MediaType.NEC_8_SD;
}
else if (bps == IBMSectorSizeCode.QuarterKilo)
{
switch (trkCounter)
{
case 80 when spt == 16:
_imageInfo.MediaType = MediaType.NEC_525_SS;
break;
case 154 when spt == 26:
_imageInfo.MediaType = MediaType.NEC_8_DD;
break;
case 160 when spt == 16:
_imageInfo.MediaType = MediaType.NEC_525_DS;
break;
}
}
else if (trkCounter == 154 &&
spt == 8 &&
bps == IBMSectorSizeCode.Kilo)
{
_imageInfo.MediaType = MediaType.NEC_525_HD;
}
else if (bps == IBMSectorSizeCode.HalfKilo)
{
switch (d88Hdr.track_table.Length)
{
case 40:
{
switch (spt)
{
case 8:
_imageInfo.MediaType = MediaType.DOS_525_SS_DD_8;
break;
case 9:
_imageInfo.MediaType = MediaType.DOS_525_SS_DD_9;
break;
}
}
break;
case 80:
{
switch (spt)
{
case 8:
_imageInfo.MediaType = MediaType.DOS_525_DS_DD_8;
break;
case 9:
_imageInfo.MediaType = MediaType.DOS_525_DS_DD_9;
break;
}
}
break;
case 160:
{
switch (spt)
{
case 15:
_imageInfo.MediaType = MediaType.NEC_35_HD_15;
break;
case 9:
_imageInfo.MediaType = MediaType.DOS_35_DS_DD_9;
break;
case 18:
_imageInfo.MediaType = MediaType.DOS_35_HD;
break;
case 36:
_imageInfo.MediaType = MediaType.DOS_35_ED;
break;
}
}
break;
case 480:
if (spt == 38)
{
_imageInfo.MediaType = MediaType.NEC_35_TD;
}
break;
}
}
}
AaruConsole.DebugWriteLine("D88 plugin", "MediaType: {0}", _imageInfo.MediaType);
_imageInfo.ImageSize = (ulong)d88Hdr.disk_size;
_imageInfo.CreationTime = imageFilter.GetCreationTime();
_imageInfo.LastModificationTime = imageFilter.GetLastWriteTime();
_imageInfo.MediaTitle = Path.GetFileNameWithoutExtension(imageFilter.GetFilename());
_imageInfo.Sectors = (ulong)_sectorsData.Count;
_imageInfo.Comments = StringHandlers.CToString(d88Hdr.name, shiftjis);
_imageInfo.XmlMediaType = XmlMediaType.BlockMedia;
_imageInfo.SectorSize = (uint)(128 << (int)bps);
switch (_imageInfo.MediaType)
{
case MediaType.NEC_525_SS:
_imageInfo.Cylinders = 80;
_imageInfo.Heads = 1;
_imageInfo.SectorsPerTrack = 16;
break;
case MediaType.NEC_8_SD:
case MediaType.NEC_8_DD:
_imageInfo.Cylinders = 77;
_imageInfo.Heads = 2;
_imageInfo.SectorsPerTrack = 26;
break;
case MediaType.NEC_525_DS:
_imageInfo.Cylinders = 80;
_imageInfo.Heads = 2;
_imageInfo.SectorsPerTrack = 16;
break;
case MediaType.NEC_525_HD:
_imageInfo.Cylinders = 77;
_imageInfo.Heads = 2;
_imageInfo.SectorsPerTrack = 8;
break;
case MediaType.DOS_525_SS_DD_8:
_imageInfo.Cylinders = 40;
_imageInfo.Heads = 1;
_imageInfo.SectorsPerTrack = 8;
break;
case MediaType.DOS_525_SS_DD_9:
_imageInfo.Cylinders = 40;
_imageInfo.Heads = 1;
_imageInfo.SectorsPerTrack = 9;
break;
case MediaType.DOS_525_DS_DD_8:
_imageInfo.Cylinders = 40;
_imageInfo.Heads = 2;
_imageInfo.SectorsPerTrack = 8;
break;
case MediaType.DOS_525_DS_DD_9:
_imageInfo.Cylinders = 40;
_imageInfo.Heads = 2;
_imageInfo.SectorsPerTrack = 9;
break;
case MediaType.NEC_35_HD_15:
_imageInfo.Cylinders = 80;
_imageInfo.Heads = 2;
_imageInfo.SectorsPerTrack = 15;
break;
case MediaType.DOS_35_DS_DD_9:
_imageInfo.Cylinders = 80;
_imageInfo.Heads = 2;
_imageInfo.SectorsPerTrack = 9;
break;
case MediaType.DOS_35_HD:
_imageInfo.Cylinders = 80;
_imageInfo.Heads = 2;
_imageInfo.SectorsPerTrack = 18;
break;
case MediaType.DOS_35_ED:
_imageInfo.Cylinders = 80;
_imageInfo.Heads = 2;
_imageInfo.SectorsPerTrack = 36;
break;
case MediaType.NEC_35_TD:
_imageInfo.Cylinders = 240;
_imageInfo.Heads = 2;
_imageInfo.SectorsPerTrack = 38;
break;
}
return(true);
}
