Updated: 04/26/2017 by Computer Hope
upper memory area

Short for Upper Memory Area, UMA is the area of RAM (random-access memory) between 640 KB and 1,024 KB (1 MB) in legacy computers, that is made available to user applications as RAM. In MS-DOS based systems, memory is split into five areas: conventional memory; upper memory; high memory; extended memory; and expanded memory. The UMA consists of upper memory blocks, and users can access this area through a special memory manager, such as EMM386.exe.

Computer acronyms, Memory terms