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生当作人杰，死亦为鬼雄，至今思项羽，不肯过江东。
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write a simple os with asm&c
 1extern void print( char color, char * text );
 2int i;
 3int main()
 4{
 5    print(0xf,"neocs: loader\n\r");
 6
 7    print(0xf,"it's written by C!\n\r");
 8
 9    return 0;
10
11}
 1extrn _main:near
 2.model tiny
 3.code
 4
 5public _halt, main, _print,
 6
 7main    proc near
 8    mov dx,ax
 9    mov ax,cs
10    mov ds,ax
11    mov es,ax
12    mov ss,ax
13    mov ax,0fff0h
14    mov sp,ax
15    mov ax,dx
16    call _main
17    call _halt
18main    endp
19
20_halt    proc near 
21hl:
22    hlt
23    jmp short hl
24_halt    endp
25    
26_print    proc near 
27    push bp
28    mov bp,sp
29    push si
30    mov si,word ptr ss:[bp+6]
31    mov bl,byte ptr ss:[bp+4]
32_loop:
33    mov al,byte ptr ds:[si]
34    test al,al
35    jz _break
36    mov bh,0
37    mov ah,0eh
38    int 010h
39    inc si
40    jmp short _loop
41
42_break:
43    pop si
44    mov sp,bp
45    pop bp
46    ret
47_print    endp
48
49end main
50


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posted on 2007-05-20 00:26 shaker(太子) 阅读(849) 评论(23)  编辑 收藏 引用 所属分类: C++

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# re: write a simple os with asm&c 2007-05-23 14:31 htqx


c 程序要用什么编译选项?   回复  更多评论
  

# re: write a simple os with asm&c 2007-05-26 18:20 To Be C++
@htqx
在make文件里面由的 参考下！  回复  更多评论
  

# re: write a simple os with asm&c 2007-06-04 11:35 过客
汇编？？  回复  更多评论
  

# re: write a simple os with asm&c 2007-06-05 21:53 To Be C++
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