Microcomputer used in system having external storing unit...

Details Microcomputer used in system having external storing unit... Microcomputer used in system having external storing unit...

2005-08-09

2005-08-09

Vo, Tim (Department: 2112)

Electrical computers and digital data processing systems: input/

Intrasystem connection

System configuring

C710S107000

Reexamination Certificate

active

06928499

ABSTRACT:
An external area judging unit judges according to an address signal of a CPU whether the access to an external memory or the access to a peripheral unit is desired. In cases where the access to the external memory (or the peripheral unit) is desired, a bus selection signal indicating the external memory (or the peripheral unit) is sent to a bus control unit, and a plurality of bus control signals received in the bus control unit from the CPU are sent to the external memory (or the peripheral unit) as a plurality of external bus signals based on a bus timing for the external memory (or the peripheral unit) to make the CPU gain access to the external memory (or the peripheral unit).

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patent: A 7-6078 (1995-01-01), None
patent: A 2001-100992 (2001-04-01), None
patent: WO 8102479 (1981-09-01), None

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