chdman - Online in the Cloud

PROGRAM:

NAME

chdman - MAME Compressed Hunks of Data (CHD) manager

SYNOPSIS

chdman option

DESCRIPTION

chdman is the (C)ompressed (H)unks of (D)ata (CHD) manager for MAME. It is a tool to
manage CHD images.

OPTIONS

Please note that each option allows a set of switches, the meaning of each is explained in
the SWITCHES section below. Whenever the short form for the switch is listed, the long one
may be used instead.

help [option]
Print a summary of the available options or, if option is given, a detailed list of
the valid switches for the option.

info -i filename [-v]
Dump the header information from a drive image.

verify -i fileiname [-ip filename]
Validate the MD5/SHA1 on a drive image.

createraw -o filename [-op filename] [-f] -i filename [-isb offset] [-ish offset] [-ib
length] [-ih length] -hs bytes -us bytes [-c none|type1[,[...]]] [-np processors]
Create a new compressed raw image from a raw file.

createhd -o filename [-op filename] [-f] [-i filename] [-isb offset] [-ish offset] [-ib
length] [-ih length] [-hs bytes] [-c none|type1[,[...]]] [-chs cylinders,heads,sectors]
[-ss bytes] [-np processors]
Create a new compressed hard disk image from a raw file.

createcd -o filename [-op filename] [-f] -i filename [-hs bytes] [-c none|type1[,[...]]]
[-np processors]
Create a new compressed CD image from a raw file.

createld -o filename [-op filename] [-f] -i filename [-isf offset] [-if length] [-hs
bytes] [-c none|type1[,[...]]] [-np processors]
Create a new compressed laserdisc image from a raw file.

extractraw -o filename [-f] -i filename [-ip filename] [-isb offset] [-ish offset] [-ib
length] [-ih length]
Extract a raw file from a CHD image.

extracthd -o filename [-f] -i filename [-ip filename] [-isb offset] [-ish offset] [-ib
length] [-ih length]
Extract a hard disk block image from a CHD image.

extractcd -o filename [-ob filename] [-f] -i filename [-ip filename]
Extract a CDRDAO .toc/.bin, CDRWIN .bin/.cue, or Sega Dreamcast .GDI file from a
CHD-CD image.

extractld -o filename [-f] -i filename [-ip filename] [-isf offset] [-if length]
Extract a laserdisc image from a CHD-LD image.

copy -o filename [-op filename] [-f] -i filename [-ip filename] [-isb offset] [-ish
offset] [-ib length] [-ih length] -hs bytes [-c none|type1[,[...]]] [-np processors]
Copy all hunks of data from one CHD file to another. The hunk sizes do not need to
match. If the source is shorter than the destination, the source data will be
padded with 0s.

addmeta -i filename -t tag [-ix index] [-vt text] [-vf filename] [-nocs]
Add metadata to the chd.

delmeta -i filename -t tag [-ix index]
Remove metadata from the chd.

dumpmeta -i filename [-o filename] [-f] -t tag [-ix index]
Dump metadata from the chd to standard output or to a file.

SWITCHES

--chs, -chs cylinders,heads,sectors
Specifies CHS geometry values for CHD harddisks.

--compression, -c none|type1[,[...]]
Which compression codecs to use (up to 4).

--force, -f
Force overwriting an existing file.

--hunksize, -hs bytes
Size of each unit, in hunks.

--ident, -id filename
Name of ident file to provide CHS information.

--index, -ix index
Indexed instance of the metadata tag.

--input, -i filename
Input file name.

--inputbytes, -ib length
Effective length of the input in bytes.

--inputframes, -if length
Effective length of the input in frames.

--inputhunks, -ih length
Effective length of the input in hunks.

--inputparent, -ip filename
Parent CHD's input file name.

--inputstartbyte, -isb offset
Starting byte offset within the input.

--inputstartframe, -isf offset
Starting frame offset within the input.

--inputstarthunk, -ish offset
Starting hunk offset within the input.

--nochecksum, -nocs
Do not include this metadata information in the overall SHA-1.

--numprocessors, -np count
Limits the number of processors to use during compression.

--output, -o filename
Output file name.

--outputbin, -ob filename
Output binary file name for extractcd.

--outputparent, -op filename
Parent CHD's output file name.

--sectorsize, -ss bytes
Size of each hard disk sector.

--tag, -t tag
4-character tag for metadata.

--valuefile, -vf filename
Text file containing data to add.

--valuetext, -vt text
Text for the metadata.

--unitsize, -us bytes
Size of each unit, in bytes.

--verbose, -v
Output additional information about the operation.

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