Question

x86 Assembly Language:

Question 49 5pts Write a short code segment. Make your code as short as possible Create a macro named Mult16 that multiplies any two signed 16 bit memory operands and produces a 16-bit product. Assume the calculations are never exceeding 16 bits at any time. HTML B TVA. I Exaaxx - Du 01

Answer 1

Program

; Multiply two 16-bit memory operands, returning
; the 16-bit product in DX:AX. Limitation: The
; <source> argument cannot be AX.

mMult16 macro dest,source
push ax
mov ax,dest ;; AX = destination
mov dx,source ;; DX = source
mul dx ;; DX:AX = product
pop ax
endm

1 ; Multiply two 16-bit memory operands, returning 2 the 16-bit product in DX:AX. Limitation: The 3 ; <source> argument cannot be AX. 4 5 - mMult16 macro dest, source 6 push ax 7 mov ax,dest ;} AX = destination 8 dx, source ;; DX = source 9 mul dx ;; DX:AX product 10 pop 11 endm mov ax

==========================================================================================

Hope this helps!

Please let me know if any changes needed.

Thank you!

I hope you're safe during the pandemic.