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Manpage of libdskrc
libdskrc
Section: Emulators (5)
Updated: 20 January 2006
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NAME
libdskrc - Custom format definitions for LibDSK programs
DESCRIPTION
The
libdskrc
file contains definitions of disk
geometries, which can be used by the LibDsk utilities
dsktrans(1)
,
dskid(1)
and
dskform(1)
The file consists of one or more sections, each describing one disk
layout. Each section begins with the format name in square brackets, and
continues until the next section begins. Within each section are one or more
entries of the form
variable
=
value
Anything after a semicolon or hash
character is treated as a comment and ignored. Blank lines are
also ignored.
PARAMETERS
For each geometry, the entries listed below can be present. If not
all the values are present, LibDsk will use default values from its
"pcw180" format (40 tracks, 9 sectors, single-sided, MFM).
- description = DESC
-
The description of the format as shown by (for example) dskform --help.
- sides = TREATMENT
-
How a double-sided disk is handled. This can either be
alt
(sides alternate -- used by most PC-hosted operating systems),
outback
(use side 0 tracks 0-79, then side 1 tracks 79-0 -- used by 144FEAT
CP/M disks), or
outout
(use side 0 tracks 0-79, then side 1 tracks 0-79 -- used by some Acorn
formats). If the disk is single-sided, this parameter can be omitted.
- cylinders = COUNT
-
Sets the number of cylinders (usually 40 or 80).
- heads = COUNT
-
Sets the number of heads (usually 1 or 2 for single- or double-sided).
- sectors = COUNT
-
Sets the number of sectors per track.
- secbase = NUMBER
-
Sets the first sector number on a track. Usually 1; some Acorn formats use 0.
- secsize = COUNT
-
Sets the size of a sector in bytes. This should be a power of 2.
- datarate = VALUE
-
Sets the rate at which the disk should be accessed. This is one of
HD
(1.4Mb or 1.2Mb),
DD (360k or 720k disc in 1.2Mb drive),
SD
(360k or 720k disc in 1.4Mb, 720k or 360k drive),
ED
(2.8Mb).
- rwgap = VALUE
-
Set the read/write gap.
- fmtgap = VALUE
-
Set the format gap.
- fm = Y or N
-
Set the recording mode.
Y
for FM,
N
for MFM.
- multitrack = Y or N
-
Set multitrack mode; this only affects attempts to read normal data from
tracks containing deleted data (or vice versa). Y for yes, N for
no.
- skipdeleted = Y or N
-
Skip deleted data when searching for non-deleted data (or vice versa).
Y for yes, N for no.
FILES
- $HOME/.libdskrc
-
User-specified format list.
- /usr/local/share/LibDsk/libdskrc
-
System-wide format list.
SEE ALSO
dsktrans(1)
,
dskform(1)
,
dskid(1)
AUTHOR
John Elliott <jce@seasip.demon.co.uk>.
Index
- NAME
-
- DESCRIPTION
-
- PARAMETERS
-
- FILES
-
- SEE ALSO
-
- AUTHOR
-
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