Re: Bliss

Simon Clubley <clubley@remove_me.eisner.decus.org-Earth.UFP> wrote:

For those of us who had to work with overlay description files at the
start of our career, there's nothing beloved about that &$^#$^ TKB. :-)

I still have bad dreams about debugging in the late 70s a big RSX
application using a complex TKB overlay tree, where the bug was a
subroutine call to a routine which was in another branch of the tree. The
called routine worked fine, but when it returned, it’s return point was now
an overwritten irrelevant instruction stream. Not easy to find. Not easy to
solve once the tree is complex to keep the runtime call sequence up and
down the tree, not across!

Moving to VAX and laying the code flat in virtual space was a great relief.



--
Paul at the paulhardy.net domain