Atari 800 User Manual

Alari 410 Program Recorder 197
the Atari's speaker to beep. When the ope rato r pre sses the
Re turn key on the Atari\ keyboard, the seco nd program will be
automatically l oade d and exec uted.
Notice the inclu sion of the prompt stateme nt in lin e 200 of the
fir st program to re mind the ope ra tor to press the Ret urn key . The
output from the loa din g and execu tion of our exa mpl es s hould
appear as in the following:
RUN "C:"
ONE , TWO , THREE
PRESS RETURN TO LOAD
FOUR, FI VE, SIX
READY
•
This procedure of loadin g the program from a nother is known as
chaining. Wh en c hainin g pr ograms using the RUN st ate ment,
reme mber th at a NEW statement is auto matic a lly executed
ca using the ex i st ing program in memor y as well as the variable
name table to be erased. This prevent s a program from using the
sa me v ariabl e values that were us ed in a pr ev ious progr am from
which it was chained.
Reading and Writing Data
Atari BASIC u ses the PRI NT# and PUT stateme nt s to write data to
th e 410 Pr og ram Record er. Th e INPUT# a nd GET statements are
u ~e d to read data s tor ed on casse ll e back into RAM .
When data is being transfe rr ed bet ween RAM a nd the 410
P rog ram R eco rd er, it is tr ansfe rr ed in blocks o f 128 cha ra cte rs. A
po
rtion of mem ory is rese rved to hold o ne 1 28 cha ra c ter bl oc k of
udta that is to be read from or written to the 410 Program

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