Re: simh vax and 4.3-quasijarus - TUHS

23 May 2002

From: Gunther Schadow &lt;gunther(a)aurora.regenstrief.org&gt;
...
  >
>  2..
>-DUA0
>HALT instruction, PC: 00000C1A (MOVL (R11),SP) 
this suspiciously looks as if the HALT is from SIMH not from the
VAX it simulates. There are two halt levels in SIMH, one being
the VAX halting and going into VAX console mode, the other being
SIMH halting. Are you absolutely sure that you have a proper
VAX console with SIMH? You should get normal VAX console
behavior, try a few commands and see whether you're on the right
page. At this point, I am at the simh prompt (">"). I think simh
catches
the halt instruction and goes to the simh prompt when it encounters
one. I have a VAX 4000/300 at home (unfortunately it doesn't run
any of the older unixes), and when it halts, I get the >>> prompt
(differs from simh).

...
 Also, be sure you have it all configured right, that
you have
the right devices defined and properly associated with files
on the hosting OS etc. I am pretty sure that I have configured simh correctly, I
verified
this by installing netbsd on the same setup, and it boots ok.

My only problem seems to be getting the bootblocks right. I have
heard that someone managed to install quasijarus0a on simh, so it
must be me somehow screwing the bootblocks.

...
 > This seems like a simh problem, or, more probably
since you can boot That Other
> OS successfully, a problem with your installation of 4.3BSD-Quasijarus0a masked
> by a simh problem.  the problem is with the bootloader only, quasijarus0a runs
well once booted using
the netbsd bootloader.

...
 I would agree. What other system can you boot on SIMH?
only netbsd and quasijarus0a (I don't have any vms media).

thanks for your help

Rico Pajarola