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33 lines
898 B
NASM
33 lines
898 B
NASM
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[org 0x7c00]
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mov bp, 0x8000 ; set the stack safely away from us
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mov sp, bp
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mov bx, 0x9000 ; es:bx = 0x0000:0x9000 = 0x09000
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mov dh, 2 ; read 5 sectors
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; the bios sets 'dl' for our boot disk number
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; if you have trouble, use the '-fda' flag: 'qemu -fda file.bin'
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call disk_load
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mov dx, [0x9000] ; retrieve the first loaded word, 0xdada
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call print_hex
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call print_nl
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mov dx, [0x9000 + 512] ; first word from second loaded sector, 0xface
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call print_hex
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jmp $
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%include "../05-bootsector-functions-strings/boot_sect_print.asm"
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%include "../05-bootsector-functions-strings/boot_sect_print_hex.asm"
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%include "boot_sect_disk.asm"
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; Magic number
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times 510 - ($-$$) db 0
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dw 0xaa55
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; boot sector = sector 1 of cyl 0 of head 0 of hdd 0
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; from now on = sector 2 ...
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times 256 dw 0xdada ; sector 2 = 512 bytes
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times 256 dw 0xface ; sector 3 = 512 bytes
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