19 lines
563 B
NASM
19 lines
563 B
NASM
org 07c00h ; 告诉编译器程序加载到7c00处
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mov ax, cs
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mov ds, ax
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mov es, ax
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call DispStr ; 调用显示字符串例程
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jmp $ ; 无限循环
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DispStr:
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mov ax, BootMessage
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mov bp, ax ; ES:BP = 串地址
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mov cx, 16 ; CX = 串长度
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mov ax, 01301h ; AH = 13, AL = 01h
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mov bx, 000ch ; 页号为0(BH = 0) 黑底红字(BL = 0Ch,高亮)
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mov dl, 0
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int 10h ; 10h 号中断
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ret
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BootMessage: db "Hello, OS world!"
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times 510-($-$$) db 0 ; 填充剩下的空间，使生成的二进制代码恰好为512字节
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dw 0x55aa ; 结束标志
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