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Improvements to disk image formats

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RichardG867
2020-07-18 21:23:49 -03:00
parent 3b13b5b7ef
commit 03977f5ab7
3 changed files with 35 additions and 9 deletions
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formats/hdx.rst
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Extended HDI (HDX)
==================
A derivative of the *Japanese FDI* disk image format, with a more compact header and support for images larger than 4 GB.
A derivative of the *Japanese FDI* disk image format, with a more compact header as well as support for images larger than 4 GB.
Specification
-------------

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settings/hdd.rst
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@@ -20,7 +20,7 @@ The *New...* button opens a new window allowing you to create an existing hard d
* **File name:** where to save the disk image file.
* See :ref:`usage/imageformats:Supported disk image formats` for a list of supported disk image formats.
* See :ref:`usage/diskimages:Hard disk images` for a list of supported image formats.
* **Cylinders/Heads/Sectors:** CHS parameters for the disk image. These boxes control the *Size (MB)* box below.
* **Size (MB):** the disk image's size in MB. This box controls the *Cylinders*, *Heads* and *Sectors* boxes above.

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usage/diskimages.rst
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Disk images
===========
Supported hard disk image formats
---------------------------------
86Box supports a large variety of disk image formats for the emulated drives.
Hard disk images
----------------
Supported formats:
+---------------------+--------------+
|Format |File extension|
@@ -18,8 +22,10 @@ Supported hard disk image formats
\* Raw images come in many extensions, including: img ima
Supported floppy disk image formats
-----------------------------------
Floppy disk images
------------------
Supported formats:
+---------------------+--------------+
|Format |File extension|
@@ -50,7 +56,7 @@ Supported floppy disk image formats
\* Raw images come in many extensions, including: img ima flp vfd
Floppy disk detection
---------------------
^^^^^^^^^^^^^^^^^^^^^
86Box detects the physical media format (sides, tracks per side, sectors per track, bytes per sector) of a floppy disk image through the following methods:
@@ -58,6 +64,26 @@ Floppy disk detection
2. Data stored in the `DOS BIOS Parameter Block <https://en.wikipedia.org/wiki/BIOS_parameter_block>`_.
3. If all else fails, a guess is made based on the file size.
The BIOS Parameter Block detection may result in incorrect behavior on *raw stream* (non-DOS) floppy disks. Installation floppies for UNIX and Linux are common examples of *raw stream* disks. Disabling the :ref:`settings/floppycdrom:Check BPB` option is strongly recommended for accessing these, as the inaccurate BPB detection may result in read errors, data corruption and other issues.
The BIOS Parameter Block detection may result in incorrect behavior on *raw stream* (non-DOS) floppy disks. Installation floppies for UNIX and Linux are common examples of *raw stream* disks. Disabling the :ref:`Check BPB <settings/floppycdrom:Floppy drives>` option is strongly recommended for accessing these, as the inaccurate BPB detection may result in read errors, data corruption and other issues.
.. note:: When using a raw image of a raw stream floppy with the Check BPB option disabled, make sure the image file has the right size for its media type, otherwise incorrect behavior may still occur.
.. note:: When using a raw image of a raw stream floppy with the Check BPB option disabled, make sure the image file has the right size for its media type, otherwise incorrect behavior may still occur.
CD-ROM / DVD-ROM optical disc images
------------------------------------
Supported formats:
+---------------------+--------------+
|Format |File extension|
+=====================+==============+
|Cue sheet |.cue + .bin |
+---------------------+--------------+
|ISO |.iso |
+---------------------+--------------+
CD audio
^^^^^^^^
Compact Disc Digital Audio (CDDA) is supported on *Cue sheet* images. CD audio playback is muted on all drives by default; it can be unmuted by unchecking the *Mute* option for the respective CD-ROM drive in the status bar or the Media menu.
.. note:: Only raw format (.bin) tracks are supported. Compressed or otherwise encapsulated audio tracks (.wav, .mp3, .ogg, .flac and other formats) are not supported.