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Nebula 2
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README
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1994-03-02
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NOTE: This archive was compressed using GNU gzip. Gzip achieves
considerably better compression rates and higher decompression speeds
than compress, but it is not installed on machines running operating
system versions older than NeXTstep 3.1. You can get it from
prep.ai.mit.edu and many other fine anon ftp sites.
Play3401 1.2
============
This is the third public release of play3401. Play3401 is a program
which reads the contents audio CDs, transfers them digitally over the
SCSI bus to the NeXT itself and then plays them on the host system.
As currently there is not yet a standard set of SCSI commands for this
task, all the CD ROM drives which can do this do it in mutually
incompatible ways. As a consequence this reader work only with the
Toshiba 3401 series of CD ROM drives.
Play3401 needs to access the raw CD which on NeXTs is only possible
for root. As a consequence it needs to be run either by root himself,
or has to be installed SUID root. "make install" by root will install
play3401 properly for general usage.
Play3401 has been heavily optimized to use as little CPU time as
possible to the point that virtually all its CPU load is caused by
system call overhead. This still leaves a CPU load of about 15% on a
25 MHz mono slab in addition to an unspecified load on the SCSI bus.
So probably you'll not want to run play3401 while recompiling the
operating system or doing 3D animation , but for use with low-impact
tasks like news/mail reading/writing, text editing or an occasional
compile, it'll work just fine.
If you find any bugs or have any problems feel free to email me.
Carl Edman 2-3-93
<cedman@princeton.edu>
Changes between V1.2 and V1.1:
==============================
- There is a slightly better chance that play3401 will work on NS/FIP
hardware.
- Play3401 will now also record samples directly off the CD to a
standard NS sound file.
- A number of minor bugs were fixed including one which made play3401s
track numbering unreliable.