CDCLIP.EXE - CDROM Digital Audio Reader >>> PROGRAM DESCRIPTION <<< CDCLIP will read "digital audio data" from an audio/music CD and store the data in a binrary output file (default is WAV format). Automatic "jitter" correction is performed to insure correct digital copies. CDCLIP can also be used to extract raw 2352 byte data sectors from a non-audio disc using the /DATA option (not supported by all CDROM drives). *********************************************************************** >>> SUPPORTED DEVICES <<< CDCLIP currently supports the following CDROM devices... GRUNDIG CDR100IPW HP 4020i JVC XR-W2001, XR-W2010 KODAK PCD225 NEC MULTISPIN 3X, MULTISPIN 4X, MULTISPIN 6X OLYMPUS CDS615E PHILIPS CDD522, CDD2000 PINNACLE RCD-1000, RCD-5020, RCD-5040 PIONEER DW-S114X PLASMON CDR4220 PLEXTOR 4PLEX, 6PLEX, 8PLEX, PX-R24CS RICOH RO-1420C SONY CDW-900E, CDU-920S, CDU-940S, CDU-561, CDU-8003, CDU-8003A, CDU-8012, CDU-55S, CDU-76S TEAC CD-R50S TOSHIBA 3401, 3501, 3601, 3701, 4100, 4101, 5301, 5401, 5901 YAMAHA CDR100, CDR102 NOTE: The Toshiba 3501 (manufactured before January 1995) has bugs in its audio data reading firmware. If you experience problems on the 3501, you will have to use the /NOJC switch to turn off jitter correction. As a result, you may not get 100% perfect copies of the original data. NOTE: The Plextor 6Plex with V1.00 firmware has many bugs. If you have this version of the drive, I suggest that you contact Plextor for the latest firmware upgrade (V1.06). NOTE: All Toshiba and NEC drives are only capable of reading audio at 1X speed regardless of how fast they read data! ********************************************************************** >>> COMMAND LINE USAGE <<< Usage: CDCLIP [/START=] [/END=] [/TRACK=n] [/ID=ha:id:lun] [/APPEND] [/BATCH] [/CDG] [/DATA] [/JC] [/NOJC] [/SPEED=n] [/BIN] [/MOT] [/WAV] imagefile - Output image data file /START - Starting MSF/LBA (default is start of disc) /END - Ending MSF/LBA (default is end of disc) /TRACK - Copy specified track number (1 to 99) /ID - SCSI ID of CDROM drive (default is first found) /APPEND - Append data to existing file /BATCH - Disable all logging messages /CDG - Enable reading of CD+G subcodes /DATA - Enable reading of raw (2352 byte) data sectors /JC - Enable 'jitter' correction (audio only) /NOJC - Disable 'jitter' correction (audio only) /RESET - Reset device (workaround for firmware bugs) /SPEED=n - Audio reading speed (default is maximum) /BIN - Write output file in Intel binary format (default for data) /MOT - Write output file in Motorola binary format /WAV - Write output file in WAV format (default for audio) e.g. CDCLIP /START=10:14:36 /END=13:55:11 /WAV TEST.WAV e.g. CDCLIP /START=106232 /END=124443 /BIN TEST.BIN e.g. CDCLIP /TRACK=5 /ID=0:3:0 /SPEED=4 /APPEND /MOT TEST.MOT The switches /START and /END specify the starting and ending address of the data to copy. The address can be either a "logical block address" or a "physical time address". Logical blocks start at zero and physical time starts at 00:02:00. The default values for /START and /END are the first and last blocks on the disc. NOTE: Some CD readers have problems locating the last readable block on a disc. If this happens, you will have to explicitly specify the ending address. Use TOC.EXE to display the disc's table-of-contents and use the LBA of the leadout track minus one. Some readers also have problems reading the last few blocks before the leadout track, so you might have to subtract two or three from the leadout LBA. The /TRACK switch can be used instead of /START and /END to specify that an entire track be copied to the output file. NOTE: This will also copy the pregap from the next track (if it exists). The /SPEED switch can be used to change the reading speed of the CDROM drive (not supported by all models). This is useful when reading from very fast drives such as the Plextor 6Plex. The /APPEND switch can be used to append additional audio data to an existing file. ********************************************************************** >>> JITTER CORRECTION <<< What is jitter correction? When digital audio is read from a CDROM drive, most drives are not capable on positioning the laser at the precise beginning of the data that you are trying to read. This is because there is no extra information at the beginning of an audio sector to indicate where the sector starts (like there is in a data sector). Because of this positioning error, you will either miss a certain number of bytes at the beginning of a sector or get duplicate bytes from the end of the previous sector. The jitter correction algorithm compensates for these position errors through the use of overlapped I/Os and a sector save/compare scheme. The /JC and /NOJC switches are used to explicitly enable or disable jitter correction. CDCLIP automatically chooses the best method for each CDROM drive model, but you may need to override this choice in certain situations. The only drives that absolutely require jitter correction (to insure a perfect copy) are those made by Toshiba. All other drives supported by CDCLIP only require that the audio data be read fast enough to keep the drive's internal buffer from overflowing as it streams data off of the disc. If you are using a very fast drive such as the Plextor 6Plex or 8Plex, then your system might not be able to keep up with the fast transfer rate and a buffer overflow will occur. In these cases, you will need to enable jitter correction to compensate for this heavy load. ********************************************************************** Please send all suggestions, comments, and bug reports to... Jeff Arnold Golden Hawk Technology 125 Indian Rock Road Merrimack, NH 03054 Phone: 603-424-0269 FAX : 603-429-0073 URL : http://www.mainstream.net/goldenhawk EMAIL: jarnold@mainstream.net ********************************************************************** Updated on SEPTEMBER 1, 1996