Atari 400 Basic Reference Manual

CHECKBOOK
BALANCER
APPENDIX H
USER
PROGRAMS
This appendix contains programs and routines that demonstrate the diverse
capabilities of the Atari Personal Computer System. Included in this appendix is
a Decimal/Hexadecimal program for those users who write programs that re-
quire this type of conversion.
This is one of the "traditional" programs that every beginning computerist
writes. It allows entry of outstanding checks and uncredited deposits as well as
cleared checks and credited deposits.
10 0 I t1 A$( 30 ) 1 t1SG$( 4~) ) ~ t·1SG 1 $( 30 ) .. t·1SG2$( 3
0 ) I t1SG3$( 30 ) I t· 1SG4$( 30 ) ·' t·1SG5$( 30 ) ·' t1SG6$( 3
0)
2e OUTSTAt-10=0
30 GRAPHICS 0:? : .,
11
CHECKBOOK BALAt·~
CER" =?
40 ? "Y•:•u ma~i lftake cor·r· ections at. arr:::~ t.i
me b~ enter· in~ a ne~a t.l
1
.)e do 1 1 ar· •,.•a 1 ue .
II
50 t·1SGU="OLO CHECK -- ~;TILL OUT::;TAt·[lWG
"
60 t1SG2:f.=
11
0LO DEPO:::IT -- t·iOT CREDITED
II
70 t1SG3$= "OLD CHECK -- .JU::;T C:LEAF.:ED
II
80 t1SG4$=
11
0LD DEP0:3IT -- JU3T CREDITED
II
90 t-1SG5$::: "t·B·J CHECK (OR SEf.~t.) ICE CHAPGE)
II
100 t·1SG6$=
11
1'--EW DEPOSIT < OR INTEREST )
II
150 TRAP 1:.0 =? "Enter· be9innin9 ba h.nce
f r·Ot)., ~our· check bo•Jk
11
.: : I HPUT '/OUF.:BAL
160 TRAP 160: ·"? "Enter· be9innire ba h.na:e
fr·c•tn ~our· bankst.atelitent
11
.: : WPUT BAt·~KE:AL
165 TRAP 40000
170 GOTO 190
100 CLOSE #1 :? "FRit-H~ : IS NOT OPERATIOt~
AL.
11
185 ? "PLEA:;£ CHECK CONNECTORS ."
190 PEF.:r·1=0
200 ? "Would ~ou 1 ike a Per· manent. r·ecor·d
on the .=·r inter·"; : INPIJf A$
210 IF LHKA$)=0 THEN 200
Appendix H-1

Atari 400 Specifications

General

Manufacturer	Atari
Model	400
Type	Home Computer
Release Year	1979
CPU	MOS Technology 6502
CPU Speed	1.79 MHz
ROM	10 KB
Operating System	Atari OS
Keyboard	Membrane keyboard
RAM	8 KB (expandable to 48 KB)
Graphics	ANTIC and GTIA chips
Sound	4 channels
Display	RF output for connection to TV
Storage	Optional cassette tape drive or floppy disk drive
Ports	Cartridge
Display Resolution	320x192 (16 colors)