4 Mb pages on 386?

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Peter_Vigren

4 Mb pages on 386?

Post by Peter_Vigren »

Is it possible to use 4 Mb pages on a 386 or is that feature only available on Pentium and higher?
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Pype.Clicker
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Re:4 Mb pages on 386?

Post by Pype.Clicker »

according to RTFM-instruction set reference for IA-32:
cpuid (p 3-72) "PSE - Page Size Extension processor supports 4 Mb pages, including the CR4.PSE bit for enabling debug extensions ..."

So it seems that PSE will *not* be available on processors < pentium, and will probably not be available on all pentiums, but only PII, PIII or Pentium Pro ...
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