50 lines
864 B
NASM
50 lines
864 B
NASM
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org 0x7C00
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bpb:
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jmp _startup ; 2 bytes
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nop ; 1 byte
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.oem:
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db "2A " ; OEM
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.bps:
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dw 0x200 ; bytes per sector
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.spc:
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db 1 ; sectors per cluster
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.rsectors:
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dw 2 ; number of reserved sectors
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.fatcnt:
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db 2 ; number of file allocation tables
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.dirents:
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dw 2 ; Number of directory entries
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.seccnt:
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dw 720 ; total number of sectors
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.mtd: ; media descriptor type
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db 0xFD ; 5.25-inch Double sided, 40 tracks per side, 9 sectors per track (360 KB)
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.spfat: ; sectors per fat
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dw 0
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.spt:
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dw 9 ; sectors per track
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.headcnt:
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dw 2 ; number of heads
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.hidseccnt:
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dd 0 ; number of hidden sectors
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.lrgseccnt:
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dd 0 ; large sector count
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times (0x3E - ($-$$)) nop
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_startup:
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mov ah, 0x08
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mov dl, 0x00
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int 0x13
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mov ax, cx
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and ax, 0x003F
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call print16
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.end:
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hlt
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jmp .end
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%include "print.asm"
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times (0x1FE - ($-$$)) nop
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dw 0xAA55
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