[Info-vax] What are the earliest DEC operating systems you worked with ?

Paul Hardy p.g.hardy at btinternet.com
Tue Mar 9 09:47:37 EST 2021


Simon Clubley <clubley at remove_me.eisner.decus.org-Earth.UFP> wrote:
> I _had_ managed to purge working with TKB from my memory. :-)

Aargh. You just brought back horrible memories of a wasted week trying to
debug a crash on PDP-11 in an application that had a complex TKB overlay
tree. Eventually traced to cross-calling between branches - worked fine for
the called routine, but when it tried to return to the caller, it had been
trampled on by loading the called routine over the top. You must only call
down to branches, not across.

It was a real relief to move to VAX and lay the application flat!


-- 
Paul at the paulhardy.net domain



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