Re: Address bits again, Article on new mainframe use

According to John Dallman <jgd@cix.co.uk>:

When I was working on the DOS version of Javelin we used a linker
that had overlays just like the mainframe linkers. I got it to work
and squeezed the code into about 1/3 the space it'd take otherwise
but it wasn't pleasant.

>
Was that PLink, the Phoenix linker? The project I worked on in 1986-87
used that for similar squashing.

Yes.  It did what it did quite well.  Javelin had multiple views of the
internal model, each of which I put in an overlay.  But it also had a split
screen mode with two views at once, so I had to use two overlay areas
and try to put some of the views in one area and some in the other so it
wasn�t thrashing between two overlays when you made a change in one window
and it updated the other window to match.

What I really wanted was relocatable segments I could load on demand
or paging, but that was a lot to ask of an 8088 or a real mode 286.

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