... which called Adding Proc Near ; Declaration of the procedure Mov Bx, 0 ; Content of the procedure Mov B1, Ah Mov Ah, 00 Add Bx, Ax Ret ; Return directive Add Endp ; End of procedure declaration ... is: Position MACRO Row, Column PUSH AX PUSH BX PUSH DX MOV AH, 02 H MOV DH, Row MOV DL, Column MOV BH, 0 INT 10 H POP DX POP BX POP AX ENDM To use a macro it is only necessary ... be written resides on the DTA. 5.6.7 Closing a file To close a file we use the 10 H function of the 21H interruption. If after invoking this function, the AL register contains the FFH...