;this program displays some pixels on a graphic screen
.model small
.stack 100h
.data

line1_4 db 11111111b, 10000001b, 10111101b, 10100101b
line5_8 db 10100101b, 10111101b, 10000001b, 11111111b

.code
init:   mov ax,@data
        mov es,ax
        mov ax,012h
        int 10h
        mov ax,0a000h
        mov ds,ax
        
        mov di,0
        mov cx,10
        mov ax,01000111b
rpt:    mov [bx],ax
;        inc al
        add bx,640
        loop rpt
        
;        mov cx,4
;        mov al,line5_8
;rpt2:   mov [di],al
;        inc al
;        add di,640
;        loop rpt2     

mov ah,8                  ;will cause the program to hang until the user presses any key
    int 21h        
mov ah,4ch
    int 21h
;***********************
 
end