Aucbvax.4888
fa.editor-p
utzoo!decvax!ucbvax!editor-people
Sun Nov 1 22:14:12 1981
Re: Small Address Space
>From RMS@MIT-AI Sun Nov 1 22:03:07 1981
Operating systems that do paging have special equipment designed to
make it both invisible and efficient. Hand-simulating paging is a
real pain even though it is no fundamental problem. Most people agree
with this; that is why they want machines with bigger address spaces
rather than rushing to simulate the bigger address space in the user
program.
If you think that hand-simulated paging is as good as having it done
invisibly by the system, you're welcome to write all your programs for
11-90's which support 32 megabytes (but can only access 64k at a time)
and switch your page maps by hand. Remember that each switch will
require a system call.
If you already know that an editor can use a large address space,
that's good. Most people are not aware of this. Many think that a
PDP-11 address space would be perfectly sufficient for the editor
PROGRAM. Perhaps people on EDITOR-PEOPLE are more aware of this than
the programming public.
-----------------------------------------------------------------
gopher://quux.org/ conversion by John Goerzen <
[email protected]>
of
http://communication.ucsd.edu/A-News/
This Usenet Oldnews Archive
article may be copied and distributed freely, provided:
1. There is no money collected for the text(s) of the articles.
2. The following notice remains appended to each copy:
The Usenet Oldnews Archive: Compilation Copyright (C) 1981, 1996
Bruce Jones, Henry Spencer, David Wiseman.
