Question

WRITE A ASSEMBLY CODE ON EMU 8086

Write an assembly code to convert the number 8765h to 6587h using only rotate instruction. 

Answer 1

; ROR

data segment

ends

code segment

start:

; set segment registers:

   mov ax, data

   mov ds, ax

   mov es, ax   

   mov ax, 8765h

   ror ax, 8

   ; wait for any key....   

   mov ah, 1

   int 21h

   mov ax, 4c00h ; exit to operating system.

   int 21h   

ends

end start ; set entry point and stop the assembler.