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2.0.35 kernel for 164LX (External SCSI devices not detected)

Newbie question here...

We have 2 working alpha 164LX running modified versions of RedHat 5.0
(modified by the vendor to get a working compiler) and Linux 2.0.33.
The machines have NCR53C8XX SCSI cards.  The problem is that while external
SCSI devices are recognized by the BIOS and the first MILO boot, they are
not detected during the final Linux boot stage.

I thought I'd try to recompile a fresh 2.0.35 kernel to see if it acts any
differently (Here's where the newbie part comes in). 

Can I use unmodified 2.0.35 sources on alpha?  Or must they be patched?

I copied 2.0.35 pristines sources over from my i386 Linux box and did: 

 make mrproper
 make xconfig
 make dep

It doesn't get very far, with errors like:
/usr/src/linux/include/asm/unistd.h:284: inconsistent operand constraints in an `asm'
{standard input}: Assembler messages:
{standard input}:31: Error: Bad expression
{standard input}:31: Error: syntax error

The synlinks are as follows:

$ ls -l  | grep linux
/usr/include/asm -> ../src/linux/include/asm -> asm-alpha
/usr/include/linux -> ../src/linux/include/linux
/usr/include/scsi -> ../src/linux/include/scsi

(I'm experienced with i386 Linux, but know next to nothing about alpha.
I know I'll have to read up on MILO, and have docs on how to boot from a
kernel on a floppy if I can managed to create one).

Any hints on how to proceed?  Thanks!
Peter Galbraith, research scientist          <GalbraithP@dfo-mpo.gc.ca>
Maurice Lamontagne Institute, Department of Fisheries and Oceans Canada
P.O. Box 1000, Mont-Joli Qc, G5H 3Z4 Canada. 418-775-0852 FAX: 775-0546
   6623'rd Linux user at the Linux Counter -- http://counter.li.org/ 

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