behaviour of classic PDP-8 frontpanel

[Paul Koning]

> On Oct 30, 2018, at 1:14 PM, dwight <dkelvey at hotmail.com> wrote:
> 
> My  Nicolet did the same thing it would load 0 into the intended start location ( on my machine it was a jump to 0 ).
> The front panel worked fine otherwise. It turned out to be some missing clocks because of a bad 7474. Strange that a common problem on different machine created by completely different issue but all writing 0 back to core.

Not all that strange.  Reading core clears it.  So if the restore cycle is either suppressed or diverted to the wrong address, you keep that zero at the location just read.

	paul