Hello I'm having some trouble with this programming question in assembly. The question asks to change values from bigEndian to littleEndian reversing the order of bytes. I have the program answer written below. But when I run it it doesn't do anything. Can someone help?

Question:

Write an ASM program that uses the variables below and MOV instructions to copy the value from bigEndian to littleEndian, reversing the order of the bytes. The numbers 32-bit value is understood to be 12345678h. .data bigEndian BYTE 12h, 34h, 56h, 78h littleEndian DWORD ?

/////////////////////////////////////////////////Code Below////////////////////////////////////////////////

INCLUDE Irvine32.inc INCLUDELIB Irvine32.lib

ExitProcess proto

.data bigEndian BYTE 12h, 34h, 56h, 78h littleEndian DWORD ?

.code main PROC

mov ah, byte ptr bigEndian mov al, byte ptr [bigEndian + 1] mov word ptr [littleEndian + 2], ax mov ah, byte ptr [bigEndian + 2] mov al, byte ptr [bigEndian + 3] mov word ptr [littleEndian], ax invoke ExitProcess,0 main ENDP END Main