Computer system with memory expansion function and expansion mem

Details Computer system with memory expansion function and expansion mem Computer system with memory expansion function and expansion mem

1993-04-21

1994-01-18

Bowler, Alyssa H.

Boots, shoes, and leggings

364DIG1, 364245, 3642454, G06F 1200, G06F 1300, G06F 1216

Patent

active

052805999

ABSTRACT:
An expansion memory is used in a configuration of a first, second or third expansion memory. The first expansion memory is an expanded memory according to the EMS (Expanded Memory Specification) system which is accessed by a CPU through a window. The second memory (extended memory) is allocated within a memory address space so that it is accessed directly by the CPU. The third expansion memory is a combination of the first and second expansion memories. An operator specifies the capacities of the first and second expansion memories from a keyboard. The CPU determines from the entered capacity of the expansion memory that the extension memory is to be arranged in one of the first to third configurations and with what capacity so as to output control information to an expansion memory arrangement setting device. The expansion memory arrangement setting device responds to the control information to arrange the expansion memory in the specified configuration and capacity.

REFERENCES:
patent: 4307448 (1981-12-01), Sattler
patent: 4500962 (1985-02-01), Lemaire et al.
patent: 4571676 (1986-02-01), Mantellina et al.
patent: 4926322 (1990-05-01), Stimac et al.
patent: 4943910 (1991-07-01), Nakamura
patent: 4984149 (1991-01-01), Iwashita et al.
patent: 5042003 (1991-08-01), Belt et al.

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