ipl2.asm

独立 WIN98下磁盘分区程序（C语言＋汇编） 界面功能类似FDISK 但独立编译

.MODEL LARGE
.DATA		;
.CODE		;   Do not edit this file!!!
LOCALS		;
PUBLIC	_EMP_IPL
PUBLIC	_STD_IPL

_EMP_IPL	PROC
		;
		;  Dummy boot record to display message like
		;
		;  "Partition is not bootable ..."
		;
		;  MBR loads this boot record at 0000:7C00h
		;
		mov	ax, cs
		mov	ds, ax
		mov	ss, ax
		mov	sp, 7C00h
		jmp	short	@@p3
@@p0:
		pop	si
		mov	ah, 0Eh
		mov	bh, 00h
@@p1:
		lodsb
		or	al, al
		jz	@@p2
		int	10h
		jmp	@@p1
@@p2:
		xor	ax, ax
		int	16h
		mov	ax, 0E0Dh
		int	10h
		mov	al, 0Ah
		int	10h
		int	19h
		;
@@p3:
		call	@@p0
		DB 	0
_EMP_IPL	ENDP


_STD_IPL	PROC	NEAR

		;
		;   IPL that comes with MS-DOS's fdisk.exe
		;

		CLI
		XOR	AX,AX
		MOV	SS,AX
		MOV	SP,7C00h
		MOV	SI,SP
		PUSH	AX
		POP	ES
		PUSH	AX
		POP	DS
		STI
		CLD
		MOV	DI,0600h
		MOV	CX,0100h
		REPNZ
		MOVSW
	;	JMP	0000:061D
		DB	0EAh
		DW	061Dh, 0000h
@@_061D:
		MOV	SI,07BEh
		MOV	BL,04h
@@_0622:
		CMP	BYTE PTR [SI],80h
		JZ	@@_0635
		CMP	BYTE PTR [SI],00h
		JNZ	@@_0648
		ADD	SI,10h
		DEC	BL
		JNZ	@@_0622
		INT	18h
@@_0635:
		MOV	DX,[SI]
		MOV	CX,[SI+02]
		MOV	BP,SI
@@_063C:
		ADD	SI,10h
		DEC	BL
		JZ	@@_065D
		CMP	BYTE PTR [SI],00
		JZ	@@_063C
@@_0648:
		MOV	SI,068Bh
@@_064B:
		LODSB
		CMP	AL,00
		JZ	@@_065B
		PUSH	SI
		MOV	BX,0007
		MOV	AH,0Eh
		INT	10h
		POP	SI
		JMP	@@_064B
@@_065B:
		JMP	@@_065B
@@_065D:
		MOV	DI,0005h
@@_0660:
		MOV	BX,7C00h
		MOV	AX,0201h
		PUSH	DI
		INT	13h
		POP	DI
		JNB	@@_0678
		XOR	AX,AX
		INT	13h
		DEC	DI
		JNZ	@@_0660
		MOV	SI,06A3h
		JMP	@@_064B
@@_0678:
		MOV	SI,06C2h
		MOV	DI,7DFEh
		CMP	WORD PTR [DI],0AA55h
		JNZ	@@_064B
		MOV	SI,BP
	;	JMP	0000:7C00
		DB	0EAh
		DW	7C00h, 0000h

@@_068B:	DB	"Invalid partition table",0
@@_06A3:	DB	"Error loading operating system",0
@@_06C2:	DB	"Missing operating system",0

		DB	293 DUP(0)

_STD_IPL	ENDP

		END