_Examining SoftRAM 95_
by Mark Russinovich, Bryce Cogswell, Andrew Schulman

Example 1:

(a)
        mov edx, source
        mov eax, dest
        mov ecx, 4096/4 ; size of a page on x86 processors / 4
copyloop:
        mov ebx, [edx]  ; read source double word (4 bytes)
        mov [eax], ebx  ; write destination
        inc edx         ; increment source pointer by 4 bytes
        inc edx
        inc edx
        inc edx
        inc eax         ; increment destination pointer by 4 bytes
        inc eax
        inc eax
        inc eax
        loopd   copyloop    ; decrement ecx and loop until its zero
                            ;    (1024 times in this case)


(b)

        mov esi, source
        mov edi, dest
        mov ecx, 4096/4
        rep movsd       ; buffer move operation - 
                        ;   repeated 1024 times since operation
                        ;   moves 4 bytes at a time