Conventional memory
FIRST 640K OF RAM UNDER DOS
640k barrier; 640K; 640K barrier; 640kb barrier; Base memory; 640 kB barrier; 640 KiB barrier; 640 KB barrier; Low memory; Low Memory; Conventional Memory; Lower memory; Low memory (DOS); Lower memory (DOS); Lower memory area; Lower Memory Area; Low Memory Area; Low memory area; Lower Memory; Console redirection
In DOS memory management, conventional memory, also called base memory, is the first 640 kilobytes of the memory on IBM PC or compatible systems. It is the read-write memory directly addressable by the processor for use by the operating system and application programs.