From 9759ee072d88ac56a5ed9de9d0523d684c91d943 Mon Sep 17 00:00:00 2001 From: RichardG867 Date: Thu, 29 Jul 2021 19:58:16 -0300 Subject: [PATCH] CD audio and disk image stuff --- hardware/diskimages.rst | 46 +++++++++++++++++++++++++---------------- usage/statusbar.rst | 2 +- 2 files changed, 29 insertions(+), 19 deletions(-) diff --git a/hardware/diskimages.rst b/hardware/diskimages.rst index 619da21..f8cc8fc 100644 --- a/hardware/diskimages.rst +++ b/hardware/diskimages.rst @@ -23,26 +23,36 @@ Supported formats: |Virtual Hard Disk|.vhd | +-----------------+--------------+ -\* Raw images come in many extensions, including .img and .ima +\* Raw image extensions recognized by 86Box include: .hdd .ima .img Hard disk size limits ^^^^^^^^^^^^^^^^^^^^^ -There are limits to how big of a hard disk an emulated machine can accept. Such limits will vary depending on the machine's age. Here are a few important ones: +There are limits to how big of a hard disk an emulated machine can accept. Such limits will vary depending on the machine's BIOS. The table below lists all important limits applicable to the IDE bus: -+---------------+---------+---------+-----+-------+ -|Limit |Disk size|Cylinders|Heads|Sectors| -+===============+=========+=========+=====+=======+ -|20-bit CHS |504 MB |1024 |16 |63 | -+---------------+---------+---------+-----+-------+ -|Extended CHS |8032 MB |1024 |256 |63 | -+---------------+---------+---------+-----+-------+ -|65535 cylinders|32255 MB |65535 |16 |63 | -+---------------+---------+---------+-----+-------+ -|48-bit LBA |131071 MB|Not applicable | -+---------------+---------+-----------------------+ ++----------------+---------+---------+-----+-------+ +|Limit |Disk size|Cylinders|Heads|Sectors| ++================+=========+=========+=====+=======+ +|20-bit CHS |504 MB |1024 |16 |63 | ++----------------+---------+---------+-----+-------+ +|12-bit cylinder |2015 MB |4095 |16 |63 | ++----------------+---------+---------+-----+-------+ +|ECHS translation|4032 MB |1024 |128 |63 | ++----------------+---------+---------+-----+-------+ +|Revised ECHS |7560 MB |1024 |240 |63 | ++----------------+---------+---------+-----+-------+ +|LBA translation |8032 MB |1024 |255 |63 | ++----------------+---------+---------+-----+-------+ +|16-bit cylinder |32255 MB |65535 |16 |63 | ++----------------+---------+---------+-----+-------+ +|28-bit CHS |130558 MB|65535 |255 |63 | ++----------------+---------+---------+-----+-------+ +|86Box |131071 MB|Not applicable | ++----------------+---------+-----------------------+ -These limits can be worked around (with caveats) by using software such as *Ontrack Disk Manager*, except for the 131071 MB one, which is a hard limit of 86Box's hard disk emulation. +The maximum supported disk image size for IDE or SCSI is + +Disk overlay software such as *Ontrack Disk Manager* can work around BIOS limits and allow booting of hard drives within the 86Box limit of 131071 MB, with the same caveats as using such software on a real machine. Floppy disk images ------------------ @@ -75,7 +85,7 @@ Supported formats: |Teledisk |.td0 | +--------------------+--------------+ -\* Raw images come in many extensions; the following ones are recognized by 86Box: .001 .002 .003 .004 .005 .006 .007 .008 .009 .010 .12 .144 .360 .720 .bin .dsk .flp .hdm .ima .img .vfd .xdf +\* Raw image extensions recognized by 86Box include: .bin .dsk .flp .hdm .ima .img .vfd .xdf Floppy disk detection ^^^^^^^^^^^^^^^^^^^^^ @@ -86,7 +96,7 @@ Floppy disk detection 2. `DOS BIOS Parameter Block `_ data within the image; 3. If all else fails, a guess is made based on the image file's size. -The BIOS Parameter Block detection method may behave incorrectly with non-DOS floppy disks. Installation floppies for UNIX and Linux are common examples of non-DOS disks. Disabling :ref:`Check BPB ` is strongly recommended for accessing these, as an inaccurate BPB detection may result in read errors, data corruption and other issues. +The BIOS Parameter Block detection method may behave incorrectly with non-DOS floppy disks. Installation floppies for UNIX and Linux are common examples of non-DOS disks. Disabling :ref:`Check BPB ` is strongly recommended when accessing these, as an inaccurate BPB detection may result in read errors, data corruption and other issues. .. note:: When using a **Raw** image of a non-DOS floppy with Check BPB disabled, make sure the image file is not truncated (smaller than its media size), otherwise incorrect behavior may still occur. @@ -105,7 +115,7 @@ Supported formats: | |.zdi (ZIP) | +---------------------+--------------+ -\* Raw images come in many extensions, including: img ima +\* Raw image extensions recognized by 86Box include: .ima .img CD-ROM / DVD-ROM optical disc images ------------------------------------ @@ -123,6 +133,6 @@ Supported formats: CD audio ^^^^^^^^ -Compact Disc Digital Audio (CDDA) playback through the emulated CD-ROM drive is supported on **Cue sheet** images. Audio output is muted on all drives by default; it can be unmuted by unchecking the *Mute* option for the respective drive on the :ref:`status bar ` or :ref:`Media menu `. +Compact Disc Digital Audio (CDDA) playback through the emulated CD-ROM drives is supported on **Cue sheet** images. Audio output is unmuted on the first CD-ROM drive and muted on subsequent drives by default; individual drives can be muted or unmuted through the :ref:`status bar ` or :ref:`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. diff --git a/usage/statusbar.rst b/usage/statusbar.rst index 66c6e2f..54950bf 100644 --- a/usage/statusbar.rst +++ b/usage/statusbar.rst @@ -38,7 +38,7 @@ A 3.5" or 5.25" floppy icon will appear for each configured :ref:`floppy drive < A CD icon will appear for each configured :ref:`CD-ROM drive `. -* **Mute:** mute any :ref:`hardware/diskimages:CD audio` played through this drive's analog output. +* **Mute:** mute any :ref:`hardware/diskimages:CD audio` played through this drive's analog output. CD audio is unmuted by default on the first configured CD-ROM drive. * **Empty:** remove any disc inserted into this drive. * **Reload previous image:** reinsert the last disc image file selected through the *Image* option. * **Image:** insert a :ref:`CD-ROM or DVD-ROM disc image file ` into this drive.