* DiscImageChef.Partitions/Human68k.cs:

* DiscImageChef.Partitions/DiscImageChef.Partitions.csproj:
	  Added Human68k partition table.

	* DiscImageChef.Partitions/RioKarma.cs:
	  Corrected typo.

	* DiscImageChef.DiscImages/ZZZRawImage.cs:
	  Detect X68000 SASI hard disks that use 256 bytes/sector.
	Correct size of ECMA-154 magnetoptical.

	* DiscImageChef.Partitions/PC98.cs:
	  Correct handling of partition name, do not directly marshal
	  as it may crash.
	Prevent false positives checking for sanity and partition
	  type, so this limits it to FreeBSD right now.

	* DiscImageChef.Partitions/Acorn.cs:
	  Do not try to read past device.

	* DiscImageChef.Helpers/BigEndianMarshal.cs:
	* DiscImageChef.Helpers/BigEndianStructure.cs:
	* DiscImageChef.Helpers/DiscImageChef.Helpers.csproj:
	  Reworked big endian marshal. Does not traverse nested
	  structures.

	* DiscImageChef.Partitions/SGI.cs:
	  Corrected big endian marshaling, manually traversing nested
	  structures.

	* DiscImageChef.Decoders/LisaTag.cs:
	  Removed temporal variable.

	* DiscImageChef.Partitions/Sun.cs:
	  Sun insists all devices must be 512 bytes/sector. Really.
	  Even CDs. But this allows bigger ones.

DiscImageChef.Partitions/PC98.cs

@@ -33,6 +33,7 @@
 using System;
 using System.Collections.Generic;
 using System.Runtime.InteropServices;
+using System.Text;
 using DiscImageChef.CommonTypes;
 using DiscImageChef.ImagePlugins;
 
@@ -81,15 +82,21 @@ namespace DiscImageChef.PartPlugins
                     part.PartitionSectors = CHStoLBA(entry.dp_ecyl, entry.dp_ehd, entry.dp_esect) - part.PartitionStartSector;
                     part.PartitionLength = part.PartitionSectors * imagePlugin.GetSectorSize();
                     part.PartitionType = string.Format("{0}", (entry.dp_sid << 8) | entry.dp_mid);
-                    part.PartitionName = entry.dp_name;
+                    part.PartitionName = StringHandlers.CToString(entry.dp_name, Encoding.GetEncoding(932));
                     part.PartitionSequence = counter;
 
-                    partitions.Add(part);
-                    counter++;
+                    if((entry.dp_sid & 0x7F) == 0x44 &&
+                       (entry.dp_mid & 0x7F) == 0x14 &&
+                        part.PartitionStartSector < imagePlugin.ImageInfo.sectors &&
+                            part.PartitionSectors + part.PartitionStartSector <= imagePlugin.ImageInfo.sectors)
+                    {
+                        partitions.Add(part);
+                        counter++;
+                    }
                 }
             }
 
-            return true;
+            return partitions.Count > 0;
         }
 
         static uint CHStoLBA(ushort cyl, byte head, byte sector)
@@ -123,7 +130,7 @@ namespace DiscImageChef.PartPlugins
             public byte dp_ehd;
             public ushort dp_ecyl;
             [MarshalAs(UnmanagedType.ByValArray, SizeConst = 16)]
-            public string dp_name;
+            public byte[] dp_name;
         }
     }
 }