PDP-11/45 RSTS/E boot problem

Noel Chiappa jnc at mercury.lcs.mit.edu
Wed Feb 6 21:11:29 CST 2019

    > From: Jon Elson

    > I'm thinking it is bad memory. ... I think it is just a bad memory chip

Nothing so simple, I'm afraid! The memory actually contains:

  PA:171600: 016162 004767 000224 000414 016700 016152 016702 016144

and it's _supposed_ to be holding:

  PA:171600: 110024 010400 000167 000016 010500 010605 010446 010346

This together with Fritz's discovery of that first 'bad memory' pattern _elsewhere_
in the binary for the command makes it look pretty likely that some sort of other
error has wound up with stuff being put in the wrong location.


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