C--: Difference between revisions

====Enable Protected Mode====

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?code32 false

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DSWORD[#gdtr] = #gdt_end - #gdt0;

DSWORD[#gdtr] = DSWORD[#gdtr] - 1;

DSDWORD[#gdtr + 2] = START + #gdt0;

DSWORD[#idtr] = #idt_end - #idt;

DSWORD[#idtr] = DSWORD[#idtr] - 1;

DSDWORD[#idtr + 2] = START + #idt;

BX = #gdtr;

$ db 0x3e, 0x0f, 0x01, 0x17

BX = #idtr;

$ db 0x3e, 0x0f, 0x01, 0x1f

$ MOV EAX, CR0

$ OR AL, 1

$ MOV CR0, EAX

jump_pm32:

$ db 0xEA

$ dw 0

$ dw 0x10

}

?code32 TRUE

void _1()

{

do_pm32:

$ MOV AX, 0x18

$ MOV DS, AX

$ MOV SS, AX

$ MOV AX, 0x08

$ MOV ES, AX

@setup_pic(0x20, 0x28);

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