27 lines
614 B
NASM
27 lines
614 B
NASM
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[org 0x7c00] ; bootloader offset
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mov bp, 0x9000 ; set stack
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mov sp, bp
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mov bx, MSG_REAL_MODE
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call print ; will be written after bios messages
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call enter_protected
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jmp $ ; will never really be executed
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%include "print.asm"
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%include "32bit_gdt.asm"
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%include "32bit_print.asm"
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%include "32bit_jump.asm"
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[bits 32]
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BEGIN_PROTECTED: ; 32bit entry
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mov ebx, MSG_PROT_MODE
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call print_string_pm ; Will be written in top left
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jmp $
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MSG_REAL_MODE db "Welcome! Started in 16-bit protected mode"
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MSG_PROT_MODE db "Hello, world! 32-bit mode initialized successfully"
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; bootsector
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times 510-($-$$) db 0
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dw 0xaa55
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