Atari 400 User Manual page 212

ON DISKETTE
STEP 1
Turn on your TV or monitor. Set the TV/game
switch box to the COMPUTER setting, and tune
to the channel you normally use with your Atari.
STEP 2
Look at the instructions that came with your
software program. If you are using a program
written in the BASIC language, the first step is to
insert a BASIC cartridge into your computer. If
you have a Model 800 computer, use the slot on
the left side of the computer. For Models 400
and 800, insert the cartridge by opening the slot
door, dropping in the cartridge, and closing the
slot door. For the Model 1200XL, the slot is on
the left side of the computer: Simply drop in the
cartridge (there is no slot door). If the program
you are using is written in machine language do
NOT insert the BASIC cartridge.
STEP 3
Turn on the power of your disk drive.
STEP 4
When the red " busy" light on the disk drive
turns off, insert the diskette into the drive. If you
were able to make a backup copy of the pro-
gram, insert the diskette containing the copy;
otherwise, insert the original program diskette.
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