Re: X problem on PMAGB-B

[Dave McGuire <mcguire%neurotica.com@localhost>]

On 11/15/25 13:10, David Brownlee wrote:
> On Fri, 14 Nov 2025 at 20:41, Dave McGuire <mcguire%neurotica.com@localhost> wrote:
> >     Annnnd the NetBSD 7.2/pmax CD hangs on boot, at "scsibus0: waiting 2
> > seconds fro devices to settle...".  I waited about 10mins.
> >
> >     This is on a 5000/260 with a PMAGB-B.  The exact same thing happens
> > in gxemul, emulating a 5000/200 with a PMAG-B.
> >
> >     NetBSD/pmax is in pretty sad shape these days. :-(
>
> Well, NetBSD is arguably in a better place now (netbsd-10/11) than it
> was in 2018 (netbsd-7) - booting and non-functional X11 usually beats
> hang-on-boot :)
>
> While that might seem like cold comfort, it does mean it is much
> easier to test changes.
>
> I don't have any pmax hardware to hand, but I ran up a netbsd-11 pmax
> build with macallan's
> machine_btop(sc->sc_vaddr + SFB_FB_OFFSET + offset);
> patch on the offchance you are free to test:
> https://sync.absd.org/pmax/netbsd-11-2025-11-15/ - includes iso and
> kernels :)

  I can't get this disk image to boot.  The bootloader gets this far:

Loading: 3/rz6/netbsd
7329552

  ...then drops me back to the ROM.

  The machine is a 5000/260 with 72MB and a PMAGB-B.

  FWIW, I replaced the PMAGB-B with a PMAG-B last night and did a full 
install of 10.1, and it (including X) works fine.  I put the PMAGB-B 
back in to run this test.

  I will be working on other things at the museum today and will check 
email periodically in case you'd like me to try something else.

            Thanks,
            -Dave

--
Dave McGuire, AK4HZ
New Kensington, PA