home *** CD-ROM | disk | FTP | other *** search
- 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.
-
- Playcd 1.3
- ============
-
- This is the fourth public release of the playcd,play3401 series.
- Playcd 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 and NEC 3X series of CD ROM drives.
- (We do have hopes though to incorporate support for other drives.
- Currently, the required OPCODE for Hitachi and Sony is known as to be
- 0xD8. But this has not been verified and this information is not
- to be relied on)
-
- Playcd 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.
-
- Playcd 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 playcd 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>
- Juergen Sell 12 Apr, 1995
- <js@icem.de>
-
-
- Changes between V1.3 and V1.2:
- ==============================
- - added support the NEC 3X series. Should also work with the 1X, 2X and 4X
- series of NEC drives but has not yet been tested.
-
- - added stupid l option to get simplest form of table of contents
-
- - added d<n> option to begin inquiry at /dev/sd<n>. Default is '0'.
-
- - renamed project to 'playcd' to reflect added nec support.
-
- 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.
-