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1995-03-19
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Welcome to the ad_atapi.device by Elaborate Bytes!
Copyright ⌐ 1994, 1995 Elaborate Bytes, Oliver Kastl
GENERAL
This device allows you to use an ATAPI CD-ROM drive
with the bsc/Alfa-Data IDE controllers (AT-508, AT-2008, AlfaPower).
You can use the very popular and cheap CD-Roms for PCs.
The device maps SCSI-II commands to ATAPI packets using the
standard Commodore HD_SCSICMD interface, so any "CD-Rom
specific" programs (Multisession Filsystems, Audio Players and
Photo-CD readers) designed for SCSI-II CD-Roms should work.
This has been tested with CacheCDFS, PlayCD, CD32-Emulator
(all written by me) and PhotoWorX (an excellent PhotoCD Reader
by Corporate Media).
However, I cannot guarantee that every SCSI-II specific program will
work, but I do not expect any major problems.
COMPATIBILITY WITH EXISTING IDE HARDDISK
Every (and I mean it!) IDE drive that works with the original
oktagon.device WILL continue to work if the ad_atapi.device
is installed. The reason is simple: My device will use the code of the
oktagon.device (if present) to access the IDE harddisk.
If you connect an ATAPI CD-Rom and you harddisk stops to work, this
usually is a hardware, not a software problem.
Check cables & jumpers.
Some harddisks must be rejumpered, if a slave drive is connected.
Consult the manual that came with your harddrive before doing so
or ask your dealer for assistance.
Make sure, the CD-ROM is configured as a slave device.
Please consult the CD-Rom installation manual.
TESTED DRIVES
A couple of drives have been tested with the ad_atapi.device.
The test configuration was an A4000/40 with and without Oktagon 2008
SCSI controller, with and without an IDE Harddisk (Quantum Maverick 540
or Seagate ST328A). The drives were selected always as the slave device,
even if no IDE Harddisk was installed.
Recommended drives (work 100%):
Mitsumi FX-001DE (2x speed)
(Don't mix this up with the FX-001D! The FX-001, FX-001D and LU005
are NO atapi devices and will NOT work! Connecting a non IDE/ATAPI
device to the Amiga IDE port may damage both your Amiga and your CD-Rom!)
Mitsumi FX-300 (3x speed)
Mitsumi FX 400 (4x speed)
Sony CDU-55E (2x speed) <-- Audio play requires CacheCDFS 2.5 or better
NOTE: The CD32-Emulator will only work with the Sony CDU-55E, if no volume
control is enabled in the emulator's preference window.
Wearnes CDD-120A (2x speed)
TESTED FILESYSTEMS
The device has been tested with the CacheCDFS (yes, this is written
by me, too) and my PlayCD Audio player.
It works very well with my CD32-Emulator.
However, I don't expect any problems with other filesystems.
INSTALLATION
Installation is simple.
Connect an IDE-ATAPI drive to your IDE port.
You should jumper the drive as a SLAVE device, even if you do
not have an IDE harddrive connected, as the Amiga may not boot
if it encounters an ATAPI CD-Rom as the Master device.
However, IF your Amiga does boot with a CD-Rom as the master
device, you could use two CD-Roms at the same time.
The unit numbers will be 0 (for the master) and 1 (for the slave).
If you have an IDE harddrive, you should buy a standard PC-IDE
harddisk cable, as the original cable is too short for both an
IDE harddisk and a CD-Rom drive.
The harddisk should be jumpered as the Master device and the
CD-Rom as the slave, otherwise the Amiga will not recognize
the harddrive.
Copy the ad_atapi.device to your devs: directory.
The supplied installer script will do this for you.
Now you must tell your CD-Rom FileSystem about the device.
This differs from product to product, please consult the manual
of the Filesystem you wish to use.
With CacheCDFS, simply run the CacheCDFS installation program.
It will automatically detect your CD-Rom.
A CD-Rom connected as the slave device will have unit number 1, which
will be the common case.
A CD-Rom connected as the master device will have unit number 0.
The name of the device driver is ad_atapi.device.
KNOWN PROBLEMS
It is possible, that some drive models cannot be mounted after a reboot,
because they need some time to wake up after a hardware reset.
(On a PC it takes often a long time until the CD-Rom is accessed)
This depends on how "fast" your startup-sequence reaches the mount
command.
If you have this problem, add a delay (e.g. Wait 3) before the mount
command in your startup-sequence.
That's it!
Please send comments, bug reports, etc to:
Elaborate Bytes
Oliver Kastl
Am Westpark 5
81373 Munich
Germany
Compuserve: 100447,3361
Internet: 100447.3361@compuserve.com
To order the CacheCDFS, the CD32 Emulator, the ad_atapi.device
or all of the above, please contact:
Hirsch & Wolf OHG
Mittelstr. 33
56564 Neuwied
Germany
Tel.: ++49-2631-83990
Fax.: ++49-2631-839931
or
NBG-USA, Inc.
482 Holly Ave.
St. Paul MN55102
USA
Tel.: ++1-612-2909447
Fax.: ++1-612-2909449