; multi-segment executable file template.

data segment
    ; add your data here!
    pKey db 'Please enter a key$'
ends

stack segment
    dw   128  dup(0)
ends

code segment
start:
; set segment registers:
    mov ax, data
    mov ds, ax
; preparing initial configuration in memory
    mov [0xA010],0xA5
    mov [0xA011],0xAF
    mov [0xA012],0xF1
    mov [0xA013],0xA1    
    mov [0xA014],0xD4
    mov [0xA015],0xC2
; preparing initial configuration in registers
    mov ax,0xB12A
    mov bx,0x10A2
    mov cx,0xF3A0
    mov dx,0x1114
; programming
    mov bl,bh
    mov bh,cl
    mov ax,[bx]
    mov bl,dl
    mov [bx],ax
    ; wait for any key.... 
    
    lea dx,pKey
    mov ah,09
    int 21h   
    mov ah, 1
    int 21h
    
    mov ax, 4c00h ; exit to operating system.
    int 21h    
ends

end start ; set entry point and stop the assembler.