geos/OST OS/os/boot_sect_32.asm
2024-03-25 23:00:14 +01:00

33 lines
588 B
NASM

[org 0x7c00]
mov bp, 0x9000
mov sp, bp
mov bx, MSG_REAL_MODE
call writeLn
call switch_to_pm
jmp $
%include "./x16/print/print.asm"
%include "./x32/init/gdt.asm"
%include "./x32/print/print_string_pm.asm"
%include "./x32/init/switch_to_pm.asm"
[bits 32]
BEGIN_PM:
mov ebx, MSG_PROT_MODE
call print_string_pm
jmp $
MSG_REAL_MODE: db "Starting OST OS in 16-bit Real Mode", 0
MSG_PROT_MODE: db "Successfully landed Obsidian Starlight in 32-bit Protected Mode", 0
times 510-($-$$) db 0
dw 0xaa55
;times 2097152 db 0 ; Only for VirtualBox