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ATAPI_Driver
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1996-02-01
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Using ATAPI CD-ROM drives with AsimCDFS
=======================================
The following are notes on our ATAPI CD-ROM driver software driver,
asim_atapi.device.
ATAPI stands for AT Attachment Packet Interface. It is an extension
to the common ATA/IDE interface (used in both the Amiga 1200 and
Amiga 4000 computers) to allow the connection of CD-ROM drives.
.1 Requirements
----------------
In order for an ATAPI CD-ROM drive to work, you will need to meet
the following requirements:
- an Amiga 1200 or Amiga 4000 machine;
- an ATAPI CD-ROM drive;
- AsimCDFS v3.5, or higher;
- asim_atapi.device.
Please note: our asim_atapi.device ATAPI CD-ROM driver will work
only with the built-in ATA/IDE interface found on the Amiga 1200
and Amiga 4000. No other ATA/IDE interfaces are currently supported.
We have tested a number of ATAPI CD-ROM drives. These are listed in the
CD-ROM_Drives file on the AsimCDFS install disk. Please note that the
CD-ROM drive that you pick MUST be an ATAPI compatible drive. A few
manufacturers have released so-called IDE CD-ROM, though they in fact
use proprietary interfaces. If you have any questions about a particular
CD-ROM drive, please feel free to contact us.
AsimCDFS v3.5 has an extra addition to the CD-ROM Model option -- select
the "ATAPI CD-ROM" option when using this asim_atapi.device driver.
Note that this will selected automatically by our automatic installation
procedure.
NOTE: At this time, the ATAPI CD-ROM driver does not support autobooting.
Expect this to be corrected in an upcoming version.
.2 Installation of the ATAPI CD-ROM Drive
------------------------------------------
The ATAPI CD-ROM drive will connect directly to the internal IDE bus
on the Amiga 1200 or Amiga 4000. Two steps will be involved in doing this:
setting the configuration of the devices, and connecting the cable.
IDE and ATAPI devices can be set to one of three different configurations:
- Master
- Slave
- Master with Slave Present
Usually jumpers or dip switches are used to set the configuration.
Your hard drive may be labeled with the jumper settings. Otherwise,
consult your hard drive manufactuer for instructions on how to properly
set the configuration.
As a maximum of two devices can be connected to an IDE bus, your
configuration will fall into one of the following three catagories:
1 hard drive and 1 ATAPI CD-ROM drive
=====================================
The hard drive will be set to "Master with Slave Present".
The CD-ROM drive will be set to "Slave"
1 ATAPI CD-ROM drive only
=========================
The CD-ROM drive will be set to "Master"
2 ATAPI CD-ROM drives
=====================
The first CD-ROM drive will be set to "Master with Slave Present".
The second CD-ROM drive will be set to "Slave".
After you have set the configuration jumpers on the CD-ROM drive and
hard drive, you will then have to connect the CD-ROM drive to the
IDE cable.
The Amiga 4000 usually ships with an IDE cable that contains an extra
connector. To make sure you have the correct cable, trace the ribbon
cable as it comes out of the IDE hard drive. The cable is usually
notched or keyed on one side of the connector. If it is not, then
a small arrow will be present in one of the corners - this will be
pin #1. Align the notch or pin #1 with the CD-ROM drive and press the
cable together.
The Amiga 1200 requires the use of a special 44-pin to 40-pin cable.
Your local Amiga dealer should be able to provide you with one.
.3 Audio Connection
--------------------
The Amiga 4000 has a 3-pin connector located at the far left hand
corner of the motherboard (when looking from the front of the computer)
which allows you to connect an internal audio source and have it
mixed into the Amiga audio and routed out through the RCA jacks.
You may wish to connect the audio from the back of your CD-ROM drive
to this connector.
.4 Installation of AsimCDFS
----------------------------
The installation procedure for AsimCDFS includes an option for ATAPI
CD-ROM users. Choose "ATAPI CD-ROM on A4000/A1200" for the first
question. AsimCDFS will then automatically install the asim_atapi.device
ATAPI driver to your system and enable the SCSI Inquire program to
access it.