I am confused about the question 2345 Please HelpSolution1

I am confused about the question 2,3,4,5. Please Help!

Solution

#1 . It locates the file NUTS in .dat extension and make it suitable to load data.

#2 . It loads Data in the file NUTS.dat else the code doesn\'t look up the data that is present inside the file.

#3 . Code Segement is typically read only memory and has fixed size And so is the Data Segment which is of 64Kb.
Only Stack segment extends depending on the data.
       absolute address = 10h*segment+offset.
Stack reserves 100 bytes for the line .stack 100H

#4 . if we remove the entry PEC pnly from the statement then the code does not execute as the previous statement contains DW PEC and it keeps on searching for PEC as result it stops.
If the DW PEC is also replaced by DW MAC then the code simply ignores the DATA word PEC and proceeds execution till the end.

#5 . ALM entry in MACRO has an entry 0 indicationg that it is the end of the DW and it need not look up for the proceeding DW resulting in end of program.