EMS and EEMS
EMS and EEMS may refer to any of the following:
2. When referring to memory EMS and EEMS is an extended portion of memory. Below is additional details about all extended memory on computer running Microsoft operating systems.
A competing standard to EMS is EEMS, developed by Ashton-Tate, AST Research and Quandram.
Extended Memory is not configurable and unavailable to programs other than those that run in Microsoft Windows and OS/2.
Expanded Memory utilizes EMS and allows DOS programs and other programs to take advantage of the available memory above 1 MB.
EMS (expanded memory specification)
Short for expanded memory specification, EMS is a specification that allows IBM compatible computers to access more than the 1 MB. Early IBM compatible computers running MS-DOS used 640 KB (conventional memory) + 384 KB (upper memory) = 1024 KB or 1 MB total memory for MS-DOS programs. EMS allowed computer programs to access memory above that 1 MB. However, due to of out of memory issues still being encountered by users, LIM EMS was created.