http://wiki.osdev.org/Unreal_Mode
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You still will not have full access to all physical RAM if you do not have have the A20 Line enabled; all the "odd" 1-megabyte blocks will be unavailable.
Code: Select all
You still will not have full access to all physical RAM if you do not have have the A20 Line enabled; all the "odd" 1-megabyte blocks will be unavailable.