This is a low-level SCSI driver for cards based on the NCR53c406a chip.
I have tested it only on Acculogic ISApport card but (in theory) it should
work with all cards using the 53c406a.

Release 0.9 of the driver now supports scatter-gather and PIO mode,
resulting in big speed increase!  It is not quite optimized for the
CPU usage, however.

WARNING!!!
This is an alpha release of the driver, so if you use it, make 
sure you back up your files before compiling and using the driver.

INSTALLATION
These patches are for Linux 1.1.50, and may require some manual
editing with other kernel versions.

To install the driver, copy the patch to /usr/src (assuming the Linux kernel
source is in /usr/src/linux), gunzip it, and then apply it with:
	patch -p0 < ncr53c406-0.9.patch
Edit linux/drivers/NCR53c406.c.  You have to set the IRQ level, and
DMA channel (if DMA mode is enabled).  Hardware ports should be
found automatically, but the autoprobe can be disabled by defining
PORT_BASE.

NOTE: Scatter-gather support is only implemented for PIO mode, so
if you use DMA mode, you must change SG_ALL to SG_NONE in NCR53c406.h.

Now reconfigure the kernel (remembering to answer yes to compiling the
NCR53c406 SCSI driver) and then recompile and reinstall the kernel.
You're all set.

If you use the driver, please report your successes/failures/problems to
the mailing list (ncr53c406@orac.iinet.com.au) or directly to me
(saumanis@cps.msu.edu).  If my address is unreachable, and
you can't get help from the mailing list, try contacting Patrick
D'Cruze <pdcruze@orac.iinet.com.au>.

The mailing list has been established to aid in reporting bugs and to
announce bug fixes and new revisions of the driver.  To subscribe to the
list, send email to:
	majordomo@orac.iinet.com.au
with the words:
	subscribe ncr53c406
in the body of the message.

Note: you don't have to be subscribed to the list to send in bug reports.
Just address your bug report to:
	ncr53c406@orac.iinet.com.au

This is driver is licensed under the terms and conditions of the Gnu Public
License version 2.


Normunds Saumanis
saumanis@cps.msu.edu