FRE

Returns the number of free bytes available in memory

Implemented by: altair8K, Applesoft, CBM, Atari, msatari, level2, GWBASIC, MSX, ABasiC, QBasic, VBDOS, FreeBASIC

With variations: bw32 (argument is optional; always returns 32000)

Also written as:

In MS QB/QBASIC, the mandatory argument can take the following values for the respective effects:

• -1: the returned value will be the maximum size for a numerical array/matrix
• -2: free space at the stack area, in bytes
• Any other number: free space at the next memory block for string allocation
• A string: compacts the string allocation area and returns the number of bytes available for strings