Q19. Given the following data definitions in memory,

W DW 1234 ; W is a WORD variable initialized to 1234

A DB 23 ; A is Byte variable initialized to 23

B DB -12? ; B is Byte variable initialized to 23

Which of the following instructions are illegal, and why?

mov W, ax

mov 24, W

mov A, 74

mov A, ah 6

mov W, ah

mov A, B

mov [123], 56

Q20. Translate the following pseudo code assignment statement into PC assembly language. Assume that variables are signed words .

a) A = ( B + 1) % 7

b) A= (B - 1) / (C % D)