Resurse de sistem de gestiune a fisierelor, directoarelor și discurilor

Scopul lucrarii: studierea sistemului de intreruperi al calculatoarelor personale IBM PC si a sistemului de gestiune a fisierelor, a sistemului de operare MS-DOS.

Sarcina pentru lucrarea de laborator:

Macro.lib

CreateFile MACRO Handle, fileName

mov ah, 3Ch

mov cx, 20h

mov dx, offset fileName

int 21h

mov [Handle], ax

ENDM

OpenFile MACRO Handle, fileName

LOCAL E

mov ah, 3Dh

mov dx, offset fileName

mov al, 02h

int 21h

mov [Handle], ax

cmp ax, 02h

jne E

CreateFile Handle, fileName

E:

ENDM

CloseFile MACRO Handle

mov ah, 3Eh

mov bx, Handle

int 21h

ENDM

Seek MACRO Handle, pos

push cx

push dx

xor cx, cx

mov dx, pos

mov ah, 42h

mov al, 2

mov bx, Handle

int 21h

pop dx

pop cx

ENDM

WriteToFile MACRO Handle, strToWrite

mov ah, 40h

mov bx, Handle

mov cx, len

mov dx, offset strToWrite

;lea dx, strToWrite

int 21h

ENDM

ReadFromFile MACRO Handle, strToRead

mov ah, 3Fh

mov bx, Handle

mov dx, offset strToRead

int 21h

ENDM

SetFileAttr MACRO fileName, Attr

mov dx, offset fileName

mov ax, 4300h

int 21h

mov ax, 4301h

add cx, Attr

int 21h

ENDM

RenameFile MACRO oldName, newName

mov ah, 56h

mov dx, offset oldName

mov di, offset newName

int 21h

ENDM

GetDrive MACRO

MOV AH, 19h

INT 21h

ENDM

SetDrive MACRO setDrv

MOV AH, 0Eh

MOV DL, setDrv

INT 21h

ENDM

GetDrive MACRO

MOV AH, 19h

INT 21h

ENDM

SetDrive MACRO setDrv

MOV AH, 0Eh

MOV DL, setDrv

INT 21h

ENDM

MkDir MACRO dirName

MOV AH, 39h

MOV DX, OFFSET dirName

INT 21h

ENDM

RmDir MACRO dirName

MOV AH, 3Ah

MOV DX, OFFSET dirName

INT 21h

ENDM