NAME

       mcd — Mitsumi CD-ROM driver

SYNOPSIS

       device mcd

       In /boot/device.hints:
       hint.mcd.0.at="isa"
       hint.mcd.0.port="0x300"
       hint.mcd.0.irq="10"

DESCRIPTION

       The mcd driver provides a data and audio interface to the Mitsumi-brand CD-ROM player.  The CD-ROM player
       must  be  interfaced  to  the  ISA  bus  through  one  of the Mitsumi proprietary controller boards.  The
       controller boards supported are the LU002S, LU005S, the FX001 and the quite common FX001D.

       The mcd driver responds to disk-specific ioctl() commands, namely the DIOCGDINFO, DIOCGPART,  DIOCWDINFO,
       and DIOCSDINFO, commands.  Other disk-specific ioctl() commands will return an error.

       The  mcd  driver  also  responds  to  special CD-ROM ioctl() commands.  These commands control the CD-ROM
       player's audio features.  The commands are:

             CDIOCREADSUBCHANNEL  get sub-channel information on current status of disc playing
             CDIOCREADTOCHEADER   get table of contents header
             CDIOCREADTOCENTRYS   gets all of the table of contents
             CDIOCPLAYTRACKS      begins audio playing at location specified
             CDIOCPLAYBLOCKS      fails with error EINVAL
             CDIOCPLAYMSF         begins audio playing at location specified
             CDIOCRESUME          resumes playing a previously paused disc
             CDIOCPAUSE           pauses a playing disc
             CDIOCSTART           begins playing a disc
             CDIOCSTOP            stops a previously playing disc
             CDIOCEJECT           opens the disc  tray  (there  is  no  support  for  a  corresponding  un-eject
                                  command).
             CDIOCRESET           stops any play and resets the Mitsumi controller board
             CDIOCSETDEBUG        cause the kernel to print debug messages to the console about the mcd driver
             CDIOCCLRDEBUG        cause the kernel to quit printing debug messages about the mcd driver

       The  ioctl()  commands defined above are the only ones that the mcd driver supports.  There are other CD-
       ROM related ioctl() commands (such as CDIOCSETVOL and CDIOCSETSTERIO) which  are  available  and  may  be
       supported by future versions of the driver.

FILES

       /dev/(r)mcd0a  accesses  BSD  partition on the disc.  Normally, there is only one file system on a CD-ROM
                      disc.
       /dev/(r)mcd0c  accesses raw device.

NOTES

       The character-mode devices for the mcd driver should only be used for accessing the audio features of the
       CD-ROM player as the performance on data is abysmal.

       The current version of the driver uses neither the DMA or IRQ features of the interface  board,  although
       it  has  an  interrupt  handler  for  any  IRQ  requests  that are generated.  Until the DMA features are
       supported, the only interrupts that the board generates are those that are not supported  by  the  driver
       anyway.

SEE ALSO

       <sys/cdio.h>

HISTORY

       An mcd driver appeared in FreeBSD 1.0.

AUTHORS

       The driver was written by Holger Veit (data part) and Brian Moore (audio part).  Changes were provided by
       Gary Clark II, Andrew A. Chernov, and Jordan K. Hubbard.

Debian                                          December 8, 1994                                          MCD(4)