ºÎÆ®¼½ÅÍ ¼³¸í : bootsect.asm

	fatOEM       db "LestatOS"               ; OEM
	fatSectSize  dw 0x200                    ; Bytes per sector = 512
	fatClustSize db 1                        ; Sectors per cluster
	fatRessect   dw 1                        ; # of reserved sectors
	fatFatCnt    db 2                        ; # of fat copies
	fatRootSize  dw 224                      ; size of root directory
	fatTotalSect dw 2880                     ; total # of sectors if < 32 meg
	fatMedia     db 0xF0                     ; Media Descriptor
	fatFatSize   dw 9                        ; Size of each FAT
	fatTrackSect dw 18                       ; Sectors per track
	fatHeadCnt   dw 2                        ; number of read-write heads
	fatHidenSect dd 0                        ; number of hidden sectors
	fatHugeSect  dd 0                        ; if fatTotalSect is 0 this value is
                                         ; the number of sectors
	fatBootDrv   db 0                        ; holds drive that the fat came from
	fatReserv    db 0                        ; not used for anything
	fatBootSign  db 29h                      ; boot signature 29h
	fatVolID     dd 0		         ; Disk volume ID also used for temp
                                         ; sector # / # sectors to load
	fatVoLabel   db "LestatOS",13,10,0       ; Volume Label
	fatFSType    db "FAT12   "               ; File System type

	mov ax,0x9000                ; put stack at 0x91000
	mov ss,ax
	mov sp,0x1000

	MOV	AX,0x8000      		;80000¹øÁö·Î À̵¿...
	MOV	ES,AX                              
	XOR	DI,DI                              
	MOV	AX,0x07C0                            
	MOV	DS,AX                              
	XOR	SI,SI                              
	MOV	CX,0x0100                            
	REPZ	                                   
	MOVSW	           
            
	JMP 0x8000:go		;0x8000:go ÀÇ À§Ä¡·Î Á¡ÇÁ            
            
   go:	mov ax,0x8000
	mov ds,ax  

	mov al, 0x0c
	mov dx, 0x03fe
	out dx, al

	cli
            
	MOV	AX,0x0000      		;40000¹øÁö¿¡¼­ 0x0000:0000À¸·Î À̵¿...
	MOV	ES,AX                              
	XOR	DI,DI                              
	MOV	AX,0x4000                            
	MOV	DS,AX                              
	XOR	SI,SI                              
	MOV	CX,0x7000                            
	REPZ	                                   
	MOVSW                    
            
	mov ax,0x0000               ; set segment registers and jump
	mov es,ax
	mov ds,ax
	jmp 0x0000:0x1000

	



½ÇÀü! (Build)

	//***************START************************
	#include "bios.h"
	#include "stdio.h"
 
	void main() 
	{ 
  	      FILE *in; 
 	       unsigned char buffer[520]; /* ¹öÆÛ¸¦ Àâ°í */
 
	        if((in = fopen("bootsect", "rb"))==NULL) /* bootsect ÆÄÀÏÀ» ¹ÙÀ̳ʸ®·Î ¿¬´ÙÀ½ */
        	{ 
                	printf("Error loading file\n"); 
        	        exit(0); 
 	       } 
 
	        fread(&buffer, 512, 1, in); /* 512¹ÙÀÌÆ®¸¦ Àаí */
 
 	       while(biosdisk(3, 0, 0, 0, 1, 1, buffer)); /* µð½ºÅ©ÀÇ Ã¹¼½ÅÍ¿¡ ¾¹´Ï´Ù */
 
        	fclose(in); 
	} 
	//***************E N D************************

 

 


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