include "asm.inc"
window 640,480,1
float a,x=320,y=240,r=800,c
while key(27)=0
cls 0,0,0
for a=0 to 360 step 0.5
color mod(a,128)+127,mod(a,128)+127,mod(a,128)+127
lx = sin(rad(a+c))*r
ly = cos(rad(a+c))*r
Ellipse x,y,lx,ly
next
c +=.5
if c>=360 then c=-c
redraw
wait 10
wend
winExit