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upper memory block (UMB)

The Upper Memory Block (UMB) is part of the Upper Memory Area

(UMA) and is managed by the memory management to save memory space. In this upper memory block of the main memory, the size of which depends on the memory allocation of the UMA, quickly callable TSR programs (Terminate and Stay Resident) can be stored, thus keeping more memory space free in the Base Memory for storing applications. Normally, UMB memory requires only 64 kB, but there are some Expanded Memory Boards that extend UMB memory space to 128 KB.

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Englisch: upper memory block - UMB
Updated at: 15.03.2008
#Words: 65
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