Atari 800 Basic Reference Manual

DECIMAL/
HEXADECIMAL
CONVERSION
PROGRAM
H-18 Appendix
This program can be typed in and used to convert hexadecimal numbers to
decimal numbers and vice versa.
10 DIM A$(9),ADS(1)
H:::; I Ot·t: :" : ?
30 ? =? "Enter· 'D' fm·· DEC to HE:=< r:r:rn• . )er·
si!)n.
11
:? HEnt.et-· 'H' fC~r- · HE ::-=: t.£:' [; EC !:CJn t. ,.t e
r·s ion . " = HlF'UT A$
40 IF LHV A$ ::• =(1 THE~; 30
50 IF A$=HHH THEt - ~ 3eO
60 IF A:t< > "D!' THEii 30
90 TPAP 90
10(1 ~?" = ? u ENTEP A DEC I f·1AL f·~Ut·1E:E~~ FROt·1 (;
TH~:OUGH 9999999999 . "
110 ·? "DEC: II,; ; H4PUT t·i
12ft IF t · ~<~3 f)F.~ N> =1E+10 THEr ·~ GOTC! 1e0
13t1 !=9
140 TH1F·=t - ~ = t·i= IrH< t~ . ...-16 >
150 TEi·1P= TEi-1? -t·f:i :: 16
160 IF TEt-1F< W THErl A$( I_, I >=::;TF.:$ ( TH1F >: G
DTO 180
170 At ( I, I > =CHP:tt:: Tt:J1F'-10+A ::; u: "A" > >
1
!3(1 IF f{::: >0 THEf · ~ I= I -1 : GOTO 14~)
19lf "?
11
HE> :::
11
.i A$(I .f 9 ) :?
2ft0 GC;TO 110
30£t TRAF 30t1
310 ?
UGH
=? uENTE~~ A HE> :: NJ1 · 1E:EP F~ ~ Oi·1 ~J TH f ?C
FFFFFFFF . ''
320 ·-:: · "HE:=·:: = !I ; : INPUT A$
33(1 t4=0
34(1 FOj:;: I=1 TO LEH( AS>
345 AD$=;~$ ( I.: I) : IF AO:t<
11
0'! THEF · ~ 30(1
350 IF AJ\ I .. I ) ::: = "9" iHEr~ r· l=t·i::i:: 16+!.. .! ~11- ( AD:t >
:
GOTC~ 37(1
355 IF AD:t < II A !I THEt-i 300
357 IF AD:t>"F
11
THEii 3€10
360 t· 4=t·t:; :: 16+r:r: ;C( AD$ ) -A3C \ H A i! )+ 1 (1
370 t·~E>::T I
380 ? "DEC = ";N:?
390 t:;OTO 32( 1
40fl Ef.iD

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