cfenollosa_os-tutorial/05-bootsector-functions-strings/boot_sect_main.asm

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NASM
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2014-10-05 10:54:46 +00:00
[org 0x7c00] ; tell the assembler that our offset is bootsector code
; The main routine makes sure the parameters are ready and then calls the function
mov bx, HELLO
call print
; We will get fancy and print a newline
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; feel free to integrate newline code into "boot_sect_print"
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mov ah, 0x0e
mov al, 0x0A ; newline char
int 0x10
mov al, 0x0D ; carriage return char
int 0x10
mov bx, GOODBYE
call print
; that's it! we can hang now
jmp $
; remember to include subroutines below the hang
%include "boot_sect_print.asm"
; data
HELLO:
db 'Hello, World', 0
GOODBYE:
db 'Goodbye', 0
; padding and magic number
times 510-($-$$) db 0
dw 0xaa55