Memory controller and method for clearing or copying memory util

Details Memory controller and method for clearing or copying memory util Memory controller and method for clearing or copying memory util

1997-06-30

1999-12-14

Gossage, Glenn

Electrical computers and digital processing systems: memory

Storage accessing and control

711165, 711166, G06F 1300

Patent

active

060031123

ABSTRACT:
A memory controller and method for clearing and copying memory in a computer system. The memory controller includes a register file having fields that store information that defines a first block of memory and indicates whether the first block of memory is to be cleared or copied to a first destination, and a first resource unit that clears or copies the first block of memory to the first destination as indicated by the first register file. The register file may store the starting address and length or size of the first block of memory, or a starting and ending address of the first block of memory. The name of the operation to be performed by the first resource unit may also be stored in the register file. A clearing operation may be performed by invalidating cache data that corresponds to the block of memory and writing zeros into the block of memory. A second register file and resource unit may also be provided and a second block of memory cleared or copied simultaneously with the first block of memory.

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Intel 3865X Microprocessor Programmer's Reference Manual, 1991, pp. 2-7 to 3-2, 17-118, 17-145, 17-173, 17-174, E1-E2.

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