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106 lines
4.1 KiB
C#
106 lines
4.1 KiB
C#
// /***************************************************************************
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// Aaru Data Preservation Suite
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// ----------------------------------------------------------------------------
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//
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// Filename : Structs.cs
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// Author(s) : Natalia Portillo <claunia@claunia.com>
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//
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// Component : Disk image plugins.
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//
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// --[ Description ] ----------------------------------------------------------
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//
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// Contains structures for Digital Research's DISKCOPY disk images.
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//
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// --[ License ] --------------------------------------------------------------
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//
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// This library is free software; you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as
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// published by the Free Software Foundation; either version 2.1 of the
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// License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, see <http://www.gnu.org/licenses/>.
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//
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// ----------------------------------------------------------------------------
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// Copyright © 2011-2025 Natalia Portillo
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// ****************************************************************************/
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using System.Runtime.InteropServices;
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namespace Aaru.Images;
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public sealed partial class DriDiskCopy
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{
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#region Nested type: Bpb
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[StructLayout(LayoutKind.Sequential, Pack = 1)]
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struct Bpb
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{
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/// <summary>Seems to be always 0x05</summary>
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public byte five;
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/// <summary>A drive code that corresponds (but it not equal to) CMOS drive types</summary>
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public DriveCode _driveCode;
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/// <summary>Unknown seems to be always 2</summary>
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public readonly ushort unknown;
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/// <summary>Cylinders</summary>
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public ushort cylinders;
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/// <summary>Seems to always be 0</summary>
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public readonly byte unknown2;
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/// <summary>Bytes per sector</summary>
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public ushort bps;
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/// <summary>Sectors per cluster</summary>
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public readonly byte spc;
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/// <summary>Sectors between BPB and FAT</summary>
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public readonly ushort rsectors;
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/// <summary>How many FATs</summary>
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public readonly byte fats_no;
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/// <summary>Entries in root directory</summary>
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public readonly ushort root_entries;
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/// <summary>Total sectors</summary>
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public ushort sectors;
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/// <summary>Media descriptor</summary>
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public readonly byte media_descriptor;
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/// <summary>Sectors per FAT</summary>
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public readonly ushort spfat;
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/// <summary>Sectors per track</summary>
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public ushort sptrack;
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/// <summary>Heads</summary>
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public ushort heads;
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/// <summary>Hidden sectors before BPB</summary>
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public readonly uint hsectors;
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/// <summary>Drive number</summary>
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public readonly byte drive_no;
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/// <summary>Seems to be 0</summary>
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public readonly ulong unknown3;
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/// <summary>Seems to be 0</summary>
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public readonly byte unknown4;
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/// <summary>Sectors per track (again?)</summary>
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public ushort sptrack2;
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/// <summary>Seems to be 0</summary>
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 144)]
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public byte[] unknown5;
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}
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#endregion
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#region Nested type: Footer
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[StructLayout(LayoutKind.Sequential, Pack = 1)]
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struct Footer
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{
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/// <summary>Signature: "DiskImage 2.01 (C) 1990,1991 Digital Research Inc\0"</summary>
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 51)]
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public byte[] signature;
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/// <summary>Information about the disk image, mostly imitates FAT BPB</summary>
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public Bpb bpb;
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/// <summary>Information about the disk image, mostly imitates FAT BPB, copy</summary>
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public Bpb bpbcopy;
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}
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#endregion
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} |