RT11-SJ is less dependent on interrupts, I think, so that might be another
thing to try.
paul
> On Jan 31, 2019, at 3:55 PM, Jerry Weiss via cctech
> wrote:
>
> My recollection is that XXDP tries not to use Interrupts or DMA, unless it
> has to.
>
> I would check out those areas
> On Jan 31, 2019, at 12:26 PM, Bill Degnan via cctech
> wrote:
>
> My PDP 11/40 suddenly lost it's ability to boot RL02 disks except the XXDP
> disk. I have two drives, both boot up an XXDP (I have more than one) just
> fine, but any formerly-working RT-11 (v 5, 5.1, 5.3) no longer boots,
My recollection is that XXDP tries not to use Interrupts or DMA, unless
it has to.
I would check out those areas first for problems if it hangs in RT-11.
Jerry
On 1/31/19 2:26 PM, Bill Degnan via cctech wrote:
My PDP 11/40 suddenly lost it's ability to boot RL02 disks except the XXDP
disk.
My PDP 11/40 suddenly lost it's ability to boot RL02 disks except the XXDP
disk. I have two drives, both boot up an XXDP (I have more than one) just
fine, but any formerly-working RT-11 (v 5, 5.1, 5.3) no longer boots, it
just hangs. I have been troubleshooting, running the 11/40 XXDP tests, but
