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What is xms memeory and ems memeory

What is xms memeory and ems memeory

What is xms memeory and ems memeory

(OP)
What is xms memeory and ems memeory ?
I know that they have something to do with DOS.

RE: What is xms memeory and ems memeory

Expanded Memory Specification (EMS)
Short for Expanded Memory Specification, EMS is a specification that allows IBM compatible computers to access more than the 1MB.  Early IBM compatible computers computers running MS-DOS used 640KB (conventional memory) + 384KB (Upper Memory) = 1024KB or 1MB total memory for MS-DOS programs. EMS allowed a computer programs to access memory above that 1MB. However, because of out of memory issues still being encountered by users LIM EMS was created.

Extended Memory Specification (XMS)
Developed by AST, Intel, Lotus and Microsoft, XMS is short for eXtended Memory Specification and allows software access to more then one 1MB.

LIM
Developed by Intel, Lotus and Microsoft, LIM also known as LIM 4.0 or LIM-EMS was a new method of being able to access more than the 1MB memory limit of MS-DOS and keep the support for EMS and EEMS.  

RE: What is xms memeory and ems memeory

(OP)
Rich2001
  Thank you for the reply....
  Does xms or ems require special hardware,
or are they strictly software based ?
The reason for my question is that I have
an old DOS system at home that gives me
either ems or xms memory error messages
with my old DOS games.

RE: What is xms memeory and ems memeory

XMS and EMS generally requires the addition of an additional memory card in the system and drivers (software). You can probally find XMS or EMS at a flea-market for next to nothing.

RE: What is xms memeory and ems memeory

(OP)
Rich2001
  Thnak you.

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