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Meaning of UPPER MEMORY BLOCK

 
Computing Dictionary
 
 Definition: 

(UMB) Up to 64 kilobytes of the expanded memory page frame above the first 64 kilobytes. The UMB can be used to store tsr programs or device drivers thereby freeing parts of the precious conventional memory. The UMB is provided by special memory manager programs; many emms can provide UMB as well.

 

 

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