Atari 400

136 User's Handbook to the Atari 400/ 800 Computers
LIST "P:" causes the program in the computer's memory to be
listed on the printer. The interfa ce module and the printer must
both be turned on. Also, the printer must be on lin e.
The computer's character set is slightly different from the
printer 's, so certain characters appear diff e rently when printed.
Also, the printer interprets some of the contro l characters as
commands . As a result, when contro l characters are printed, the
printer may have an unusual response. To avoid this problem , do
not use control characters with in quotat i on marks. Instead, use
the CHR$ function to generate special characters.
EXAMPLE .
PRINT "--" (escape, contro l - *)
PRINT CHR$(31) (preferred)
The computer can only accommodate 128variables. If the limit is
exceeded, ERROR-4 occurs. The co mputer maintains a variable
name table with the names of all variables used since the NEW
command was exec uted. As a result, the variable name table can
accumulate variable names that are no longer being used. The
LIST statement is the on ly Atari BASIC statement that saves a
program without saving the variable name table. As a result, the
LIST and ENTER statements can be used to e limin ate unused
variables
from the variable name table.
EXAMPLE
Save the program on cassette or di sk using LIST.
Execute a NEW statement to clear the memory.
Put the program back into memory using ENTER.
LOAD (LO.)
The LOAD statement is used to recover programs that were
re corded with the SAVE statement.
CONFIGURATION
LOAD" devi ce: fi lespec"