[Simh] NetBSD 5.1 on MicoVAX 3900 boot error

[Peter Conrad Cumminsky]

On Mon, 17 Apr 2017, Mark Pizzolato wrote:

> Date: Mon, 17 Apr 2017 10:37:49 -0700
> From: Mark Pizzolato <Mark at infocomm.com>
> To: "petercon at sdf.org" <petercon at sdf.org>,
>     "simh at trailing-edge.com" <simh at trailing-edge.com>
> Subject: RE: [Simh] NetBSD 5.1 on MicoVAX 3900 boot error
> 
> On Monday, April 17, 2017 at 10:28 AM, petercpm at sdf.org wrote:
>> I'm getting a Segv error on boot of NetBSD 5.1 on the VAX emulator of SIMH v
>> 4.0 Beta. Install went fine w/o any problems. I'm attaching the session file and
>> here's the netbsd-boot file:
>>
>> ............................................................
>> load -r ..\..\..\..\bin\ka655x.bin
>> set cpu 64m
>> ; SET CPU IDLE=NETBSD
>> set tto 7b
>> ; AT DZ 8888
>> set rq0 ra92
>> at rq0 netbsd.dsk
>> at xq0 eth0
>> boot cpu
>>
>> ; At the VMB prompt, type boot dua0:
>> ............................................................
>
> I vaguely recall that there was at least one NetBSD version that was just broken and hadn't been tested on any VAX (real or simulated) before it was 'released'.
>
> I suggest you:
> 1) try the same with simh 3.9
> 2) try a later NetBSD release.
>
> If you're seeing a problem which persists across several NetBSD releases, and/or exists in the 4.0 code but not the 3.9 code, please open an issue at https://github.com/simh/simh/issues
>
> Have Fun.
>
> - Mark Pizzolato
>

Thanks for the tips and info.

I've tried all versions of NetBSD 5.x (5.0.2, 5.1, 5.1.5, 5.2 and 
5.2.3) that I can find on SIMH 4.0 beta and they all Segv. I have an old 
NetBSD 3 that boots and I tried NetBSD 6.0.4 and that also boots.

I am not able to run earlier versions of SIMH as I'm on Windows 10 64-bit 
and WinPCAP does not run on W10. I use NPcap on W10 and that doesn't work 
on earlier versions of SIMH which require WinPcap.

I specifically want to run a 5.x version of NetBSD. I'm pretty sure it did 
run on SIMH 3.8-1 on Windows 7 before the upgrade. I need to downgrade a 
laptop I have to Win7 in the future and may try that. Until then I'll play 
with OpenBSD which doesn't seem to have any problems with SIMH 4.0 beta.


--
Peter Conrad Cumminsky - petercon at sdf.lonestar.org
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