BIOS/DOS CALLS – FILE MANIPULATION




ASSUME CS: CODE, DS: DATA
DATA SEGMENT
FILENAME DB “SAMPLE.DAT”, “$”
MSG DB 0DH, 0AH, “FILE NOT CREATED”, ODH, OAH, “$”
DATA ENDS
CODE SEGMENT
START:           MOV AX, DATA
                        MOV DS, AX
                        MOV DX, OFFSET FILENAME
                        MOV CX, 00H
                        MOV AH, 3CH
                        INT 21H
                        JNC LOOP1
                        MOV AX, DATA
                        MOV DS, AX
                        MOV DX, OFFSET MSG
                        MOV AH, 09H
                        INT 21H
LOOP1           MOV AH, 4CH
                        INT 21H
CODE ENDS

END START

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