How to draw a dot in assembler?

Question

Raster graphics

The question may be too stupid and banal, but - how to draw a point in assembler, just an ordinary point?

Answer 1

I asked myself, I answered myself, maybe someone will need
mov ah, 0Ch ; point drawing function
mov al,1 ; point color
mov bh,0 ; video page
mov cx,50 ; X coordinate
mov dx,20 ; Y coordinate
int 10h ; BIOS interrupt call