Talisman X driver version 2.0

Talisman X driver version 2.0

[Eran]

Version 2.0 of a driver for Talisman X MPEG decoder card is available from
<http://www.bell-labs.com/org/1123/what/mpeg-driver>.

It was tested on Globalyst 630 PCs (100MHz and 120MHz)
and on a Micron Electronics Millennia (133MHz Pentium) running Plan9.

Changes in version 2.0:
-	more frequent calls to scheduler during lengthy data transfers
-	support for loading color lookup table
It still supports only 640x480 screen resolution.

The hardware:
Talisman X is a hardware MPEG-1 playback card for ISA bus.
It displays full motion video in a VGA window and/or generates NTSC signal.
In particular, MPEG decoding, picture resizing and video overlay are all
done in hardware. However, this card doesn't support DMA. All data
transfers are done in software.

Disclaimer:
The driver is placed in the public domain.
It can be freely distributed, provided the copyright and
these terms are retained, in this and all derived works.
The driver is provided AS-IS, without any warranty.

The driver is NOT a part of the Plan9 distribution.
To install the driver, you should modify two kernel source files
(clock.c and fns.h).
This means that you will have to take some care in applying future patches
to these source files. See the installation instructions.

Please send me your bug reports, comments, and suggestions.
If you use the driver, please send me a note.

Regards,

	Eran