Information processing system using domain table address extensi

Details Information processing system using domain table address extensi Information processing system using domain table address extensi

1988-10-03

1991-06-11

Williams, Jr., Archie E.

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364245, 36424531, 3642463, 3642526, 3642551, 3642555, 3642557, 3642563, 3642606, 3649556, 3649571, 3649583, 3649705, G06F 9318, G06F 1206, G06F 1210, G06F 702

Patent

active

050237772

ABSTRACT:
An information processing apparatus with an address extension function includes a set of address adders for performing address addition with respect to a first fraction of an address for an instruction and/or a data, which fraction corresponds to the not extended bit portion of the address, and a set of domain registers for storing a second fraction of the address for an instruction or an operand, which fraction corresponds to the extended bit portion of the address. If address extension is not made, address translation into a real address is performed using a virtual address obtained through addition operation by the address adder and in accordance with a conventional not address extended program. If address extension is made, address translation into a real address is performed using a virtual address obtained by concatinating the addition result by the address adder with the content of the domain register.

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patent: 4864493 (1989-09-01), Kishi

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