If needed can we store large values like 256 512 etc that 
	could be useful in our program and can we store values in 
	other areas in memory.

Were you in class yesterday?  That is what the .FILL pseudo-op is 
all about.

For example, the line:

	     VERYBIG   .FILL   x7FA9

in your program, will at assembly time, put the bit 
pattern 0111111110101001 into the location labeled 
VERYBIG in the object module that the assembler is 
producing.

Good luck
Yale Patt