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FRE

Syntax

FRE(0)
FRE(X$)

Description

Arguments to FRE are dummy arguments. FRE returns the number of bytes in memory not being used by BASIC-80. FRE("") forces a garbage collection before returning the number of free bytes. BE PATIENT: garbage collection may take 1 to 1-½ minutes. BASIC will not initiate garbage collection until all free memory has been used up. Therefore, using FRE("") periodically will result in shorter delays for each garbage collection.

Example

PRINT FRE(0)
 14542
 Ok

See Also

  • HELP SET - Display help for a specific setting
  • INKEY$ - Returns either a one-character string containing a character read from the terminal or a null string if no character is pending at the terminal
  • INP - Returns the byte read from port I
  • LIMITS - Display resource usage and interpreter limits
  • NULL - To set the number of nulls to be printed at the end of each line
  • PEEK - Returns the byte (decimal integer in the range 0 to 255) read from memory location I
  • RANDOMIZE - To reseed the random number generator
  • REM - To allow explanatory remarks to be inserted in a program
  • SET (setting) - Configure interpreter settings at runtime
  • SHOW SETTINGS - Display current interpreter settings
  • TRON/TROFF - To trace the execution of program statements
  • USR - Calls the user's assembly language subroutine with the argument X
  • VARPTR - Returns the memory address of a variable
  • WIDTH - To set the printed line width in number of characters for the terminal or line printer