helpQuestion $1$: Write an assembly language program for the

following problems:

a$.$ Exchange the contents of the following memory

locations:

Let's say:

$(5021H)=35H$

$(5022H)=45H$

$(5023H)=55H$

Exchange them so that,

$(5021H)=45H$

$(5022H)=55H$

$(5023H)=35H$

$(4m)$

b$.$ Add the two $8-$bit numbers:

$(6000H)=DCH$

$(6001H)=3EH$

Result $=DCH+3EH=1AH$

$(6002H)=1AH($ The result $is$ stored here$)$

$(4m)$

c$.$ Subtract the two $8-$bit numbers.

$(2000H)=6FH$

$(2001H)=3BH$

Result $=6FH-3BH=34H$

$(2002H)=34H,($The result is stored here$)$

$(4m)$

d$.$ Write an assembly language program to solve the

problem: Add two $16-$bit numbers.

$(3000H)=15H$

$(3001H)=2BH$

$(3002H)=20H$

$(3003H)=3EH$

Result $=2B15H+3E20H=6935H$

$(3004H)=35H$

$(3005H)=69H$