regaccessing.asm

; Data stored inside CPU register called _register data_.
; and accessing register data directly is addressing mode called _register addressing_

section .data
section .text

global .start
start:
        mov        rbp, rsi        ; 64-bit
        mov        ecx, edx        ; 32-bit
        add        di, ax        ; 16-bit
        add        bl, ch        ; 8-bit

        ; If you're moving data from register to another then the source and dist _must_ be the same size.
        ;mov        di, rsi        ; invalid operands combination

section .bass