New and GetMem report this error when there is not enough free space in the heap to allocate a block of the requested size.

If you get Heap Overflow errors when running your program from within the IDE, try exiting Borland Pascal (File│Exit) and running your program from the DOS command line.

See run-time error #1: Out of Memory for suggestions on how to regain memory.

For a complete discussion of the heap manager, refer to the chapter "Memory Issues" in the Borland Pascal Programmer's Guide.