comp arch

; multi-segment executable file template.

data segment
    a DB 1
    b DB 1
    c DW 1
    x DW 1, 2, 3
    count = ($-x)/2
    y DW count dup(0AAh)
    err_msg DB 'Err', 0Dh, 0Ah, '$'
data ends

stack segment
    DB   128  dup(0)
stack ends

code segment
start:
; set segment registers:
    mov ax, data
    mov ds, ax
    
    XOR si, si    ; clear stuff
    XOR di, di    ; clear stuff   
c_pr:             ; if start is not called run this
    MOV cx, count
    JCXZ pab
    
cikl:
    MOV al, b
    CBW
    CMP x[si], ax
    ;JE f2
    ;JL f3 
           
ger:
    MOV y[di], al
    INC si
    INC si
    INC di
    LOOP cikl

pab:
    mov ax, 4c00h ; exit to operating system.
    int 21h    
    
err:
    LEA dx, err_msg
    MOV ah, 9
    INT 21h
    XOR al, al
    JMP ger
    
       
ends

end start ; set entry point and stop the assembler.