Microprocessor based computer with virtual memory space in overw

Details Microprocessor based computer with virtual memory space in overw Microprocessor based computer with virtual memory space in overw

1994-02-25

1996-04-23

Rudolph, Rebecca L.

Boots, shoes, and leggings

395413, 364DIG1, G06F 1200

Patent

active

055112064

ABSTRACT:
A microcode controlled processor having an overwritable memory device for microcode storage includes a setting device for setting a virtual memory space and a conversion table device showing the relationship between the address information of the virtual memory space designated by the setting device and the address in a real memory space inclusive of the memory device. A predetermined address in the virtual memory space is designated to read out data and the contents of the conversion table device may be modified. In this manner, a large size program or a plurality of programs can be executed immediately without the size of the executable program being limited by the size of the real memory space.

REFERENCES:
patent: 3800291 (1974-03-01), Cocke et al.
patent: 4145745 (1979-03-01), De Bijl et al.
patent: 4181935 (1980-01-01), Feeser et al.
patent: 4276594 (1981-06-01), Morley
patent: 4597041 (1986-06-01), Guyer et al.
patent: 4747044 (1988-05-01), Schmidt et al.
patent: 4761733 (1988-08-01), McCrocklin et al.
IBM Technical Disclosure Bulletin, vol. 29, No. 12, May 1987, pp. 5334-5337 (IBM).

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