Re: large memory support for x86

From: Timur Tabi (
Date: Fri Oct 13 2000 - 13:42:24 EST

** Reply to message from Ingo Molnar <> on Fri, 13 Oct 2000
20:44:19 +0200 (CEST)

> processes are not limited to a single segment, eg. Wine uses nonstandard
> segments. But as i said, using multiple segments does not let you out of
> 32 bits of virtual memory.

Sure it does, just like segments let 16-bit apps access more than 64KB of
memory. If you have two selectors, each one can point to a different physical
base address, and IIRC, the size of the physical address base can be 36 bits.
That gives you 16 physically contiguous 4GB memory blocks.

Timur Tabi -
Interactive Silicon -

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