SRND Version 1.3
================

This is SRND, a Linux driver for the miroMEDIA Surround board.
The miroMEDIA Surround is an ISA Plug & Play board with a Dolby Pro Logic
decoder. It enhances the audio capabilities of already existing audio
components.

The vendor of the miroMEDIA Surround board, the miro Computer Products AG,
doesn't exits any more for some years now. So if you want to purchase this
board you have to look into the second-hand market.

This driver should work with kernel versions 2.0.x, 2.2.x and 2.4.x.

This driver was created with the help of a Basic sourcecode sent to me by
miroMEDIA GmbH (see "Credits" below). No reverse-engineering has been done.

For the latest version of this driver and its frontends take a look at:

  http://www.tu-bs.de/~y0000441/srnd_e.html


Since version 0.91 there is support for more than one miroMEDIA Surround board
installed in the system. I don't know if this is possible in practice. It
depends on the ISA PnP mechanism. I don't know if each Surround board has
its own unique PnP ID and can be isolated from other Surround boards during
Plug & Play setup.

Since version 0.95 you can pass the I/O ports of the installed Surround boards
as parameters to the module. The syntax is:

	modprobe srnd io=base0[,base1[,base2[,base3]]]
	
This loads the module with base0 for the first Surround board and optional
base1 to base3 for more installed boards. For example:

	modprobe srnd io=0x300,0x310

This loads the module for two miroMEDIA Surround boards installed with
I/O port 0x300 for the first and I/O port 0x310 for the second board.
Possible values for the I/O ports are 0x300, 0x310, ..., 0x380.

Since version 1.1 you can also pass the value 0 as I/O port. In this case
SRND scans the ports 0x300 to 0x380 until it finds a miroMEDIA Surround
board.

Since version 1.2 SRND can use the native ISA Plug & Play support of the
2.4.x kernels.


SRND was build and tested with kernel versions 2.0.36, 2.2.18 and 2.4.0,
egcs-1.1.2 and modutils-2.4.0.


Credits
-------
Many thanks to miroMEDIA GmbH, Braunschweig for sending me programming
information for the miroMEDIA Surround board.


Legal information
-----------------
3D-Phonic(R) is a registered trademark of VICTOR COMPANY OF JAPAN, LIMITED.
DOLBY and PRO LOGIC are trademarks of Dolby Laboratories Licensing Corporation.
miro(R) is a registered trademark of miro Computer Products AG.

SRND is free software and is distributed under the terms of the
GNU General Public License. See COPYING for further information.

Copyright (C) 1998-2001 Oliver Gantz <Oliver.Gantz@ePost.de>.
