On Sat, Mar 26, 2022 at 9:20 PM Rob Jarratt via cctalk
<cctalk@classiccmp.org> wrote:

> Can anyone suggest what else the CPU might need? Or is it LTC?
>

I would check the ACLO and DCLO signals. These are both high (pulled
up by the bus terminator) for normal running, a PSU can pull them low
if it detects loss of mains or whatever. Normally that will halt the
CPU

-tony

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