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1994-01-04
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PlayCDDA - Play audio CDs on your Amiga's audio.device
------------------------------------------------------
Version 1.1 04-Jan-94 (C) 1993 by Frank Munkert
(ln_fmu@pki-nbg.philips.de)
INTRODUCTION
PlayCDDA is a program for owners of Toshiba 3401 and Apple CD-300
CDROM drives. These drives are capable of transferring CD-DA
(digital audio) data over the SCSI bus. PlayCDDA reads this data and
reproduces the corresponding sounds on the Amiga's audio.device.
DISCLAIMER
This software is provided as-is, without warranty of any kind,
either expressed or implied. In no event will the author be liable
for direct, indirect, incidental or consequential damages or data
loss resulting from the use or application of this software. The
entire risk as to the results and performance of this software is
assumed by the user.
REQUIREMENTS
AmiCDROM should work with any Amiga model which has a "SCSI-direct"
compatible SCSI bus adapter. A Toshiba 3401 or Apple CD-300 CDROM
drive must be connected to the SCSI bus.
Your SCSI bus setup must have a bandwidth of at least 173 KB/sec in
order to transfer 44100 4-bit-samples per second. The higher the
bandwidth, the better. Also, while running PlayCDDA there shouldn't
be much other activity on the SCSI bus (e.g. hard disk accesses).
INSTALLATION
Copy the file 'PlayCDDA' to your favourite location for executable
programs.
USING PLAYCDDA
Invocation from CLI
You have to supply the name of your SCSI device and the
SCSI unit number of your CDROM drive as arguments to PlayCDDA,
e.g.
PlayCDDA scsi.device 1
invokes PlayCDDA with SCSI device name "scsi.device" and
unit number 1.
The complete command line template for PlayCDDA is
DEVICE/A,UNIT/A/N,CHIP/S,FAST/S,DMA/S,ANY/S,LOW/S,MEDIUM/S,HIGH/S
DEVICE: scsi device name
UNIT: scsi unit number
CHIP: use chip memory for CDROM buffers (this is the default)
FAST: use fast memory for CDROM buffers
DMA: use 24 bit DMA memory for CDROM buffers
ANY: use any available memory for CDROM buffers
The options CHIP, FAST, DMA and ANY are mutually exclusive.
LOW: low volume
MEDIUM: medium volume
HIGH: high volume
The options LOW, MEDIUM and HIGH are mutually exclusive.
Invocation from WorkBench
Edit the tooltype entries "DEVICE" and "UNIT" of the PlayCDDA icon
such that they reflect your system setup.
Double-click on the PlayCDDA icon.
The optional tooltype "MEMORY" may have the values "CHIP", "FAST",
"DMA" or "ANY" (see above).
The optional tooltype "VOLUME" may have the values "LOW", "MEDIUM"
or "HIGH" (see above).
PlayCDDA communicates with the user over a simple graphical
interface. Basically, you have to click at the button for the
track you want to hear, and PlayCDDA starts playing this track
on your Amiga's loudspeaker.
The rest of the section explains the individual buttons of the
user interface.
"Start"
Click at this button to play the first track.
"Stop"
Stop playing.
"1" ... "20"
Click at on of these buttons to play the corresponding track.
"Next"
Plays the next track.
"Prev"
Plays the previous track.
"Volume"
Adjust the volume of the sound reproduction.
"Sampling rate"
The number of bytes per second that are sent to the audio.device.
The higher the sampling rate the better the sound quality.
"Buffers"
Number of buffers. The higher the number of buffers, the lesser is
the chance that the sound may be interrupted by other tasks with
higher priority.
You should adjust "Buffers" and "Sampling rate" to fit your system's
need. On an Amiga 3000T with built-in SCSI device, the default settings
should work. With an Apple CD-300 it might be necessary to set the
number of buffers to 64 for increased performance.
HISTORY
V1.1: 04-Jan-94
Added support for the Apple CD-300, implemented by Heiko Rath
(hr@brewhr.swb.de)
New options: CHIP, FAST, DMA, ANY, LOW, MEDIUM, HIGH.
Minor changes. (ln_fmu)
V1.0: 21-Nov-93
Original release with support for Toshiba 3401 CDROM drives.
CONTACTING THE AUTHOR
Please send bug reports and suggestions to ln_fmu@pki-nbg.philips.de.
If you want to report an error, please describe your system
configuration (Amiga model, SCSI device, PlayCDDA version number).