A20 Line: Difference between revisions
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Content deleted Content added
Added additional more obvious code to test line A20 |
m Small description fix |
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Line 102:
mov byte [.BufferOverMB], al
mov ah, 1
mov byte [ds:si], 0
mov byte [es:di], 1
mov al, [ds:si]
cmp al, [es:di] ; check byte at address 0x0500 != byte at address 0x100500
jne .exit
dec ah
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