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;Start 16 BITS bootloader program
[BITS 16]
;Save the first adress with a label to complete the MBR at the end.
start:
;Include bios routines and jump to skip including code
jmp skipInc
%include "clearScreenIntBios.asm"
%include "printIntBios.asm"
skipInc:
;Init CPU registers
mov ax, 0x07C0 ;Put bootloader adress in ax register
mov ds, ax ;Init data segment
;Init stack from 0x80000 to 0x8f000
mov ax, 0x8000
mov ss, ax ;Set stack segment
mov ax, 0x0f00
mov sp, ax ;Set stack offset
;Clear the screen
call clearScreenIntBios
;Print msg
mov si, helloBootloader ;load msg in si register
call printIntBios ;print the msg
;Pause here !
infiniteLoop:
jmp infiniteLoop
;Define data
helloBootloader db "PiegOS bootloader successfully running !", 0
;Complete the MBR with nothing
times 510 - ($ - start) db 0x0
;Declare magic number
dw 0xAA55
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