100 IFZ=0THENZ=1:LOAD"GRAFIK MODUL",8,1
110 CLS=938:PLOT=820
120 POKE53265,59:POKE53272,24
130 SYS CLS:PRINT"[147]"
140 :
150 X0=160:Y0=100:XR=99:YR=30
160 W=30
170 :
180 T=SIN(W*(null)/180):S=SQR(1-T*T):Y2=0
190 FORA=XRTO0STEP-1
200 DY=SQR(XR*XR-A*A)*YR/XR:DX=A:Y3=DY
210 X1=S*DX+T*DY:Y1=S*DY-T*DX
220 SYS PLOT,X0+X1,Y0+Y1
230 SYS PLOT,X0-X1,Y0-Y1
240 X1=-S*DX+T*DY:Y1=-S*DY-T*DX
250 SYS PLOT,X0-X1,Y0+Y1
260 SYS PLOT,X0+X1,Y0-Y1
270 IFDY>Y2+1THENDY=DY-1:GOTO210
280 Y2=Y3
290 NEXTA
300 :
310 POKE198,0:WAIT198,1:PRINT"[147]"
320 POKE53265,27:POKE53272,21