Atari 400 Basic Reference Manual page 107

H-10
Appendix
510 IF PEEK( 764 > =255 THEt-i 5W
515 F.:EM OPEN TE.>: : T l·Ht· i OOi,J l·liTHOUT
CLEARH~
G SCREEt·i
520 GRAPHIc:; 7
+
32
525
F~81 CHAt~GE
COLOk:::; BACK
530 SET COLOR 0
J
4
J
4: :3ETCOLOP L 0
J
14
550 STOP
1000 R81
ORA~,~
1 STAR CENTERED AT
i·L \'
1010 PLOT
:x:-L"f':[!RA~JTO >::+L'r'
1020 PLOT >Vi' -1 : PLOT
:=(.'l
+
1
1030 RETURN