On Wed, 2007-04-25 at 23:46 +0200, Joerg Schilling wrote:
> I am not sure about TOPS-20, I did introduce a status output for SIGQUIT
> with sdd and star in 1985. When did TOPS-20 introduce ^T?

Before 1984.  

In the fall of 1984 I used systems at MIT which were running TOPS-20
which had control-T support; some of the vaxes there ran a hacked bsd4.2
which copied the feature.  

I have vague recollections that the feature (real-time status reports
bound to control-T) was also in RSTS/E (another DEC operating system for
the PDP-11), which I used in high school between 1980 and 1984.

                                        - Bill





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