cclist at sydex.com
Tue Feb 21 22:44:57 CST 2006
On 2/21/2006 at 7:35 PM vrs wrote:
>I am certain that Xenix/286 doesn't page. It does swap, much like early
>PDP-11 Unix kernels. But you will need enough RAM to load the kernel plus
>your largest process.
Certainly not page--there's no native paging facility in the 286. That
came with the 386. However, the 286 can run segmented code and swap
segments in and out of memory. One could, I suppose, define a 64K page
size and fill the descriptor table with entries and so, in theory, have a
virtual memory size of half a gig. But you'd have to tread selector
arithmetic something awful.
AFAIK, no OS ever did this on the 286.
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