Atari 800 Basic Reference Manual

UNITED STATES
FLAG
This program involves switching colors to set up the stripes. It uses graphics
mode 7 plus 16 so that the display appears as a full-screen. Note the cor-
respondence of the COLOR statements with the SETCOLOR statements. For fun
and experimentation purposes, add a SOUND statement and use a READ I DA T A
combination to add "The Star Spangled Banner" after line 470. (Refer to Section
10.)
10 ~:Et-1 DR8l·J THE Ut~ITED STATE:; FLAG
20 F~EM HIGH F.:ESOUJTiot-~ 4-COLOR GRAPHICS}
NO TE:~T ~Ht·~OOl·l
30 GRAPHICS 7+16
40 REt1 SETCOLOR ~) CORPE~;POt-tD:; TO COLOR 1
50 SETCOLOR e,4J4=RE0=1
60 F~Ef1 SETCOLOR 1 COR~:ESFCir·m:; TO COLOR 2
70 SET COLOR L tL 14 = ~·JH !TE =2
80 F~Et1 !3ETCOLOR 2 COF.:RE::;POt·~DS TO COLO~~ 3
90 E:LUE=3 = REt-1 DEFAULTS TO BLUE
100 F£r ·1 DRA~·J 13 ~~EO :~: ~JHITE f:TPIF'E:3
110 C=RED
120 FOR !=0 TO 12
133 COLO~: C
140 REt1 EACH STP I PE HA:S ::;El..JERAL HOP I ZOHT
AL Lit~E:;;
150 FOR J=0 TO 6
160 PLOT 0 .. I::;: : 7+.J
170 ORAWTO 159}I*7+J
180 ~~E>~T .J
190 REt1 3mTCH COLOF.::::
200 C=C+1 =IF C > ~JHITE THHi C=F.:EO
210 ~~E:)::T I
300 RB-1 DRAL·J BLUE PECTA!·iGLE
310 COLO~: BLUE
320 FOR I =0 TO 48
330 PLOT I)J I
34(1 DRAL·JTO 79 .. I
350 ~~E:);:T I
360 REt·1 DRAl·J 9 ROl·JS OF ~·JH I TE :3TAF.:3
370 COLOF~ ~JHITE
380 K=0=1':8 ·1 START mTH Rm·J OF 6 STARS
390 FOR I =0 TO 8
395 Y=4+ I :~5
400 FOF.: .J=O TO 4 = REt-1 5 STARS I r·i A F. : Ol·J
410 :>::=K+5+J~=:14 = G0:3UB 1€n30
420 ~~E:~~T J
430 IF K< >0 THEH K=0 = GOTO 470
440 RE~1 ADO 6TH STAP EUE~:'r' OTHER L HiE
450 >~=5+5:t~14: GOSUB l~XtO
460 K=7
470 ~iE>::T I
500 RB1 IF KEY HIT THEH :3TOP
Appendix H-9

Atari 800 Specifications

General

Processor	MOS Technology 6502
Processor Speed	1.79 MHz
ROM	10 KB
Graphics	ANTIC and GTIA chips
Release Year	1979
Display Resolution	up to 320 x 192
Colors	128 colors
Sound	4 channels
Storage	Cartridge, cassette, floppy disk
Ports	Cartridge, serial, monitor
Operating System	Atari OS