Re: issues with netbsd-8 and simh-vax

[Anders Magnusson <ragge%ludd.ltu.se@localhost>]

The boot loader is placed at address 0x3f0000 (boot/Makefile.inc), so it 
seems like it is overwritten during kernel loading.
It may be a problem to increase it since IIRC the VMB/ROM routines used 
to load the kernel can only access the first 4MB of memory.

The correct solution would probably be to:
- Make boot PIC and relocate it to top of memory.
- Use a bounce buffer in lower 4MB while loading kernel.

-- R


Den 2018-03-10 kl. 02:03, skrev matthew green:
> hi folks.
>
>
> i can't boot -8 in simh using the microvax3900 emulation.  at
> the end of kernel loading, it gets into a stray interrupt loop:
>
> > > NetBSD/vax boot [1.12 (Thu Mar  8 03:36:42 UTC 2018)] <<
> > > Press any key to abort autoboot 4
> getdisklabel: no disk label
> nfs_open: must mount first.
> open netbsd.vax: No such file or directory
> > boot netbsd
> getdisklabel: no disk label
> nfs_open: must mount first.
> 3462484+211660 [232576+219195stray interrupt: vector 0x18, ipl 31
> stray interrupt: vector 0x18, ipl 31
> stray interrupt: vector 0x18, ipl 31
> [ ... forever ... ]
>
> this same setup works with netbsd-7.  any ideas?
>
>
> .mrg.