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Entering Long Mode Directly: Difference between revisions

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Zenith (talk | contribs)
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Long mode hardware wiil always have A20 control via port 92h.
Line 38:
 
 
;Enable A20 via keyboardport controller92h
 
in al,92h
call .wait_for_keyboard_controller
or al,02h
 
out 0x6492h,al▼
mov al,0xD1 ;Out A20 control
▲out 0x64,al
 
call .wait_for_keyboard_controller
 
mov al,0xDF ;Out Enable A20
out 0x60,al
 
 
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