Posted: Wed May 25, 2005 12:36 am
First of all, let me begin by stating that the ABORTB pin supports single- and multi-address-space MMU designs. There is no set pretext, unlike in-chip MMUs of other processors.
No. The x86 architecture supports only truely 4KiB and 4MiB pages. There are no portable provisions for anything else. Some models also support a 2MiB page size, but this is not yet (will ever be?) universally supported by future generations of CPUs.
There are no page sizes smaller than 4KiB for x86 CPUs.
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Nope. IIRC, the x86 supports multiple page sizes from 1k to about 32k or so, and there's a special 4m mode for I/O.
There are no page sizes smaller than 4KiB for x86 CPUs.