Add pattern for D88 disk images.

2025-12-16 11:14:38 +00:00 · 2025-06-23 11:45:23 +01:00
parent 31b532e80a
commit f0cd1d006b
1 changed files with 109 additions and 0 deletions
--- a/disk/D88.hexpat
+++ b/disk/D88.hexpat
@@ -0,0 +1,109 @@
+// /***************************************************************************
+// Aaru Data Preservation Suite
+// ----------------------------------------------------------------------------
+//
+// Filename       : D88.hexpat
+// Author(s)      : Natalia Portillo <claunia@claunia.com>
+//
+// Component      : ImHex pattern for parsing D88 disk images.
+// Version        : 1.00
+//
+// --[ Description ] ----------------------------------------------------------
+//
+//     Parses D88 disk images.
+//
+// --[ History ] --------------------------------------------------------------
+//     
+//     1.00: Initial release.
+//
+// --[ License ] --------------------------------------------------------------
+//
+//     This program is free software: you can redistribute it and/or modify
+//     it under the terms of the GNU General Public License as
+//     published by the Free Software Foundation, either version 3 of the
+//     License, or (at your option) any later version.
+//
+//     This program is distributed in the hope that it will be useful,
+//     but WITHOUT ANY WARRANTY; without even the implied warranty of
+//     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//     GNU General Public License for more details.
+//
+//     You should have received a copy of the GNU General Public License
+//     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+//
+// ----------------------------------------------------------------------------
+// Copyright © 2011-2025 Natalia Portillo
+// ****************************************************************************/
+
+// TODO: Parse tracks and sectors. Missing how to do array of pointers
+
+#pragma author Nat Portillo <claunia@claunia.com>
+#pragma description D88 disk image parser (*.D88)
+#pragma endian little
+
+enum ibm_sector_size_t : u8
+{
+    _128b = 0,
+    _256b = 1,
+    _512b = 2,
+    _1k = 3,
+    _2k = 4,
+    _4k = 5,
+    _8k = 6,
+    _16k = 7
+};
+
+enum disk_type_t : u8
+{
+    D2  = 0x00,
+    DD2 = 0x10,
+    HD2 = 0x20
+};
+
+enum density_type_t : u8
+{
+    MFM = 0x00,
+    FM  = 0x40
+};
+
+struct d88_sector_t
+{
+    // Cylinder ID の C
+    u8 c;
+    // Head ID の H
+    u8 h;
+    // Sector number ID の R
+    u8 r;
+    // Sector size ID の N
+    ibm_sector_size_t n;
+    // Number of sectors in this track このトラック内に存在するセクタの数
+    s16 spt;
+    // Density: 0x00 MFM, 0x40 FM 記録密度： 0x00 倍密度、0x40 単密度
+    density_type_t density;
+    // Deleted sector, 0x00 not deleted, 0x10 deleted DELETED MARK： 0x00 ノーマル、 0x10 DELETED
+    u8 deleted_mark;
+    // Sector status ステータス
+    u8 status;
+    // Reserved リザーブ
+    padding[5];
+    // Size of data following this field このセクタ部のデータサイズ
+    s16 size_of_data;
+};
+
+struct d88_header_t
+{
+    // Disk name, nul-terminated ASCII ディスクの名前(ASCII + '\0')
+    char name[17];
+    // Reserved ディスクの名前(ASCII + '\0')
+    padding[9];
+    // Write protect status ライトプロテクト： 0x00 なし、0x10 あり
+    u8 write_protect;
+    // Disk type ディスクの種類： 0x00 2D、 0x10 2DD、 0x20 2HD
+    disk_type_t disk_type;
+    // Disk image size ディスクのサイズ
+    s32 disk_size;
+    // Track pointers トラック部のオフセットテーブル 0 Track ～ 163 Track
+    s32 track_table[164];
+};
+    
+d88_header_t header @ 0x00;