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