汇编源代码之硬盘保护锁

核心提示：CALL NEAR PTR PWENTERMOV SI,0F1B0HMOV DI,0E1B0HMOV CX,8HREPE CMPSBJNZ EXIT2MOV AX,0201HMOV CX,0003HMOV BX,0F000HMOV DX,0080HINT 13HMOV AX,0301HMOV CX,0001HMOV B

CALL NEAR PTR PWENTER

MOV SI,0F1B0H

MOV DI,0E1B0H

MOV CX,8H

REPE CMPSB

JNZ EXIT2

MOV AX,0201H

MOV CX,0003H

MOV BX,0F000H

MOV DX,0080H

INT 13H

MOV AX,0301H

MOV CX,0001H

MOV BX,0F000H

MOV DX,0080H

INT 13H

MOV DH,03H

MOV DL,00H

MOV BH,00H

MOV AH,02H

INT 10H

MOV AH,06H

MOV AL,00H

MOV BH,07H

MOV CX,0000H

MOV DX,184FH

INT 10H

MOV AH,09H

MOV DX,OFFSET D14

INT 21H

JMP EXIT

EXIT2:

MOV AH,09H

MOV DX,OFFSET D8

INT 21H

MOV AH,4CH

INT 21H

;子程序用于从键盘读密码

PWENTER PROC NEAR

PUSH AX

PUSH BX

PUSH CX

PUSH DX

MOV AX,0600H

MOV BH,0F0H

MOV CX,0000H

MOV DX,184FH
　　INT 10H

MOV DL,1AH

MOV SI,OFFSET D5

DISPLAY:

MOV AH,02H

MOV DH,10H

MOV BH,00H

INT 10H

MOV AL,[SI]

CMP AL,00H

JE GETPW

MOV AH,09H

MOV CX,01H

MOV BH,00H

MOV BL,70H

INT 10H

INC DL

INC SI

JMP DISPLAY

GETPW:

MOV CX,0004H

MOV AH,0000H

MOV DI,0F1B0H

REPZ STOSW

MOV CX,0009H

MOV DI,0F1B0H

MOV DL,23H

READKEY:

MOV AH,00H

INT 16H

CMP AL,0DH

JE OK

CMP AL,20H

JE READKEY

CMP AL,00H

JE READKEY

CMP AL,09H

JE READKEY

CMP AL,1BH

JE AESC

PUSH CX

MOV AH,02H

MOV DH,10H

MOV BH,00H

INT 10H

POP CX

CMP AL,08H

JE BACKSPACE

PUSH AX

MOV AH,0EH

MOV AL,2AH

MOV BL,07H

INT 10H

POP AX

ADD AL,23H

MOV [DI],AL

INC DI

DEC CX

CMP CX,00H

JE OVERFLOW

INC DL

JMP READKEY

OK:

POP AX

POP BX

POP CX

POP DX

RET

AESC: