Apparatus and method for a base address register on a computer p

Details Apparatus and method for a base address register on a computer p Apparatus and method for a base address register on a computer p

1997-08-28

2000-10-03

Peikari, B. James

Electrical computers and digital processing systems: memory

Address formation

Varying address bit-length or size

711220, 711211, G06F 935, G06F 1210

Patent

active

061287180

ABSTRACT:
A method for providing a base address register in a computer system that allows the length of the base address portion of an address to be changed and thereby allows various sizes of address spaces to be supported by the same base address register. The method employs steps that enable and disable bits of the base address register to properly support the desired address space size. Some embodiments of the method set disabled bits of the base address register to a known value. An apparatus that employs the method includes a second register connected to the base address register to supply signals that enable and disable bits of the base address register appropriately.

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