Malfunctioning VT240 - help please

Jon Elson elson at
Thu Jun 11 10:49:47 CDT 2020

On 06/11/2020 02:29 AM, Mattis Lind via cctalk wrote:
> If that would be the case I think the system would fail 
> quite soon rather than on test 5. A guess is that this is 
> a memory problem.
Sure, once you call a subroutine and then try to return, 
corrupted memory would throw the processor into never-never 
land.  And, that could leave the bus in a weird state, 
perhaps with no valid memory or device selected.


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