geos/OST OS/os/boot_sect_16.asm

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732 B
NASM
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2024-03-25 23:00:14 +01:00
[ org 0x7c00 ] ; Tells the assemble to start inside the boot location
mov [BOOT_DRIVE], dl
mov bp, 0x8000
mov sp, bp
mov ebx, BOOTING_MSG
mov edx, 2
call print
mov bx, 0x9000
mov dh, 5
mov dl, [BOOT_DRIVE]
call disk_load
mov dx, [0x9000]
call print_hex
mov dx, [0x9000 + 512]
call print_hex
jmp $
; Imports print
%include "./x16/print/print.asm"
%include "./x16/print/print_hex.asm"
%include "./x16/disk/disk_load.asm"
BOOT_DRIVE: db 0
BOOTING_MSG: db 'Booting Obsidian Starlight OS (OST OS)',0
RANDOM_MSG: db 'Ya like jazz?',0
times 510-($-$$) db 0 ; Pad the boot sector out with zeros
dw 0xaa55
times 256 dw 0xdada
times 256 dw 0xface
times 2097152 db 0 ; Only for VirtualBox