Re: 10.0_RC5 at boot on VAX 4000/200

[George Harvey <fr30%dial.pipex.com@localhost>]

On Tue, 16 Apr 2024 08:32:55 +0200 (CEST)
Robert Doerfler <rodo%bloerp.de@localhost> wrote:

> 
> Hi,
> 
> it took some time, but finally I was able to setup some netboot environment. It turned out like you said, it is booting from netboot but not from disk:
> 

Thanks for testing, at least I know the problem is not unique to my hardware now.

I had started sprinkling printfs through the code but other calls on my time came along before I reached any conclusion. The stage I had got to was different results coming back from the CMD controller when polled in mscp_waitstep() in dev/mscp/mscp_subr.c.

Netbooting I saw:

[   1.0000000] ubasearch: calling config_probe
[   1.0000000] udamatch: tries=0, mi_iot=80335a78, mi_iph=8afeb468
[   1.0000000] udamatch: mscp_waitstep 1
[   1.0000000] mscp_waitstep: read_val=00000800, result=00000800, status=1

Booting from disk I saw:

[   1.0000000] ubasearch: calling config_probe
[   1.0000000] udamatch: tries=0, mi_iot=80335a78, mi_iph=8afeb468
[   1.0000000] udamatch: mscp_waitstep 1
[   1.0000000] mscp_waitstep: read_val=00000000, result=00000800, status=0

The all-zeros read value leads to the board not being recognised but I've got no idea why that only happens with disk boot.

George