Protect mode and GDT?
Posted: Tue Dec 24, 2002 7:52 am
Can anyone please tell me how i can go abt building my own GDT and loading it with lgdt.
Look in the FritzOS boot.asm code:
In your PMode code:
lgdt[gdtr] ; Load GDT
just before your boot sector's times directive:
gdtr
dw gdt_end-1
dd gdt
gdt
nullsel equ $-gdt
gdt0
dd 0
dd 0
codesel equ $-gdt
dw 0ffffh
dw 0
db 0
db 09ah
db 0cfh
db 0h
datasel equ $-gdt
dw 0ffffh
dw 0h
db 0h
db 092h
db 0cfh
db 0
gdt_end