cpu 8086 org 256 start: xor ax, ax mov si, buffer mov cx, 0 rep lodsb mov si, buffer mov cx, 1 rep lodsb mov si, buffer mov cx, 2 rep lodsb mov si, buffer mov cx, 3 rep lodsb mov ax, 4C00h int 21h align 2 buffer: db 1, 2, 3, 4