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Objective
The assignment has been designed to enable you:
- To know about different addressing modes
- To calculate effective address and physical address
- To know about the comparisons and conditions
Answer the following questions
Q#1.
a. Calculate the physical memory address generated by the following segment offset pairs.
i. 74F0:2123
ii. 0000:6727
iii. FFFF:4336
iv. AB01:FFFF
v. 0FFF:FFFF
b. Identify the problems in the following instructions and correct them by replacing them with one or two instruction having the same effect.
i. mov [02], [ 22]
ii. mov [wordvar], 20l
iii. mov bx, al
iv. mov ax, [si+di+100]
v. mov bx,[bs+bp+200]
Q#2.
a. Write a program in assembly language that calculate the factorial of a number where
factorial is defined as:
Factorial(x) = x*(x-1)*(x-2)*...*1
factorial (0) = 1
b. If AX=8FFF and BX=0FFF and “cmp ax, bx” is executed, which of the following
jumps will be taken? Each part is independent of others. Also give the value of Z, S,
and C flags.
i. jg greater
ii. jl smaller
iii. ja above
iv. jb below
