Device Driver INFORMATION
                      -------------------------

This README file contains some additional information to supplement that
contained in the User's Manual.


-----------------------  ADDITIONAL INFORMATION  -----------------------

1. SCSI interface borad
 The DRD600.SYS is the device driver for FUTURE DOMAIN SCSI interface
board (8bit, 16bit and microchannel) or it's compatible (PIONEER DD-C5002).
 The DRD60PS.SYS is the device driver for IBM PS/2 SCSI Adapter /A.
Please use the appropriate driver for your interface board.

2. DRD60ASP.SYS and ASPIFD.SYS (in ASPI directory)
 The DRD60ASP.SYS device driver is an ASPI version of the DRD series device
drivers for the Pioneer DRM-600.

3. DISC.EXE utility
 The DRD600 series device driver can handle a maximum of 12 Discs.
Some of the currently available applications can only work on systems
that have a desiginated drive letter and subunit number. The DISC.EXE
utility program allows the desigination of the CD-ROM subunit No. to
be in any desired order, but only in conjunction with theDRD600
series Device Driver.
The use of this program is explaind below;

    To see the current order of the Discs.
        >DISC cd-rom_device_name
        >DISC cd-rom_drive_letter:
              The drive letter is required ':'.

    To change the current order of the Discs.
        >DISC cd-rom_device_name [-R] no1 no2 .....

       The position of the number to be changed is switched with the
      position of the number its replacing. Using the -R option reseting
      of the order from 0 upwards is possible.

    To exchange two drive letters.
        >DISC cd-rom_drive_letter: cd-rom_drive_letter:

4. DRDUTL.EXE utility
 The DRD600 series device driver and the MSCDEX.EXE allows the MS-DOS
to add multiple CD-ROM drives. Currently, some applications will waste
time do useless actions or can't handle the device driver error messages,
if multiple CD-ROM drives are connected. This utility changes the driver's
behavior (mode) to permit the optimum performance of this type of
application. Use this utility only when your application program requests
this kind of change of mode.
The use of this program is explaind below;

    To see the current mode.
        >DRDUTL CD-ROM_device_name
        >DRDUTL CD-ROM_drive_letter:
              The drive letter is required ':'.

    To change the current mode.
        >DRDUTL CD-ROM_device_name switch [switch] ..
        >DRDUTL CD-ROM_drive_letter: switch [switch] ..

    switch
        DSKCHK:ON(OFF) Enables or disables the disc check operation.
        SEEK:ON(OFF)   Enables or disables the seek operation.
        VDRTRY:ON(OFF) Enables or disables "Invalid Medium Change"
                       error message when reading the Volume Descriptor.
    Follow the setting of these switches as the application request.

5.SETUP.EXE
 To install DRD600.SYS, DRD60PS.SYS and MSCDEX.EXE,the setup program is 
the most convenient method. Please be aware, that if an EMS buffer has 
been allocated the device driver switches will have to be changed. 
Refer to the user`s manual for further details.

-----------------------------  ATTENTION  -----------------------------

1. Please make sure that the DRM-600 or DRM-604X drive's SCSI ID number,
which is set by dip switches or selector at the rear of the changer, and
the other SCSI device's (eg. SCSI hard disk or MO disk) ID numbers are 
not the same. This is to ensure that the system will operate correctly
when power is turned on. For more detailed information on the SCSI 
device's ID number,please consult your SCSI device's user's manuals.

2. WARNING, in the interest of safety and of possible harmful side
effects to the devices that are to be interconnected. Please ensure that
power to the devices is turned off before attempting to connect DRM-600
or DRM-604X to a computer.

3. The IBM SCSI Adapter /A interface board checks the SCSI devices when
the computer is booted up. If the SCSI device doesn't answer correctly,
the device isn't available once the computer has booted up. Please turn
the power of the drive on before or at the same time as that of the
computer.


----------------------------  VERSION UP  -----------------------------

1. DRD600.SYS,DRD60PS.SYS  Ver.1.10
If the "/s"(set SCSI ID) is omitted, the SCSI bus is automatically
searched for an available SCSI ID for up to 2 connected CD-ROM drives.
If the switch "/s" is used, the automatic SCSI ID search feature is 
over-ridden and the provided SCSI ID is used.

2. The DRD600.SYS device version has been upgraded to 1.10. 
The 16 bits FUTURE DOMAIN SCSI interface board has been supported.

3. The MICROSOFT CD-ROM EXTENSIONS (MSCDEX.EXE) has been upgraded to 2.21.
This version of MSCDEX works with EMS Ver.4. Thus Windows Ver.2.11 or 
Ver.3 real mode will work with this version of MSCDEX.