Allocation of real storage for hardware descriptors within virtu

Details Allocation of real storage for hardware descriptors within virtu Allocation of real storage for hardware descriptors within virtu

1994-12-12

1998-06-09

Chan, Eddie P.

Electrical computers and digital processing systems: memory

Address formation

Address mapping

711209, G06F 1208

Patent

active

057652104

ABSTRACT:
The amount of real memory space used by descriptor tables of a computer system is reduced. On system initialization, sufficient contiguous virtual memory space for each table is allotted for descriptors in the tables to define all memory space in both central storage and expanded storage. However, only descriptors for on-line storage locations, relative to a particular partition, are placed in these tables. As the system operates, the tables are continuously updated, removing descriptors for storage locations taken off-line and adding descriptors for blocks of memory brought on-line so that the tables reflect only the storage locations then on-line in the particular partition.

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