PDP-11 Overlays

Paul Koning paulkoning at comcast.net
Mon Sep 21 16:59:43 CDT 2015

> On Sep 21, 2015, at 5:16 PM, Jerome H. Fine <jhfinedp3k at compsys.to> wrote:
> ...
> Another important aspect is that RT-11 has a few extra instructions
> in the overlay handler which determines if the overlay is already in
> memory. ...
> My question is if TKB overlays also have these extra instructions?

Yes, it also tracks if something is already resident.  I haven't looked into the details.  (The only overlay machinery I studied to any significant extent is the RT-11 one.)


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