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Re: The problems in src/sys/dev/ic/isp.c



On 5/27/26 15:04, Julian Coleman wrote:
Hi,

Now then the real problem is what to serve to the DEC Alpha to get
it to net boot. I have no clue where to start on that and no clue
what the firmware/prom commands would be. Also .. what the heck is
the network port? I have the 100Mbit in there and the original 10Mbit
thing is in there also. This is all just like puzzle pieces with no
picture on top.

(I have netbooted my DS20L, but it was a while ago, and I didn't write
down everything, but I don't think that I missed out anything here.)

You'll need the device name for SRM on the Alpha and also to setup
the netboot server.  Using these as references:

   https://man.netbsd.org/alpha/boot.8
   https://man.netbsd.org/sparc64/diskless.8

you can use:

   show devices

to list the hardware, and boot with something like:

   boot ewa0 -s

(guessing that you want ewa0 from your mail of Feb 13, and -s is optional).

For the server, you already have the SS20 booting, so you should have the
daemons set up (tftpd, dhcpd, NFS server).  Grab prebuilt alpha binaries,
from (e.g. for 10.1):

   https://cdn.netbsd.org/pub/NetBSD/NetBSD-10.1/alpha/binary/

As a minimum sets/base.tgz sets/etc.tgz and kernel/netbsd-GENERIC.gz and
unpack them to your exported root.  Copy usr/mdec/netboot to your tftp root
(/tftpboot ?) and add a DHCPD entry something like:

host as600 {
         hardware ethernet 08:00:2b:e7:d4:57;
         fixed-address 192.168.XX.YY;
         next-server 192.168.XX.ZZ;
         filename "/netboot";
         option swap-server 192.168.XX.ZZ;
         option root-path "/path/to/as600/root";
}

I usually create a swap file next to the root directory, but that's optional.
Make sure that your NFS server is exporting this root to the AS600's IP and
you should be set.

Regards,

Julian


At great risk of sounding very 1970s : Right On !

Thank you for the details and I shall mess around with that today.

My first big hope is that the DEC Alphastation 600 will power on
and give me a firmware prompt. Seems to be hit and miss lately.



--
Dennis Clarke
RISC-V/SPARC/PPC/ARM/CISC
UNIX and Linux spoken


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