Bus state control circuit

Details Bus state control circuit Bus state control circuit

1986-08-21

1988-09-20

Yusko, Donald J.

Communications: electrical

Continuously variable indicating

With meter reading

307445, 307480, 307465, H04Q 900, H03K 1900

Patent

active

047728884

ABSTRACT:
A bus state control circuit controls the access operation on the basis of access request signals supplied thereto. The access of an input-output device starts after a predetermined time interval in the case when a previous access was made to the input-output device, while it starts immediately in the case when the previous access was made to a main memory device or when such access was made to the input-output device or such access was made to the input-output device but a predetermined time has passed at a point in time when the access request signal indicates the access of the input-output device.

REFERENCES:
patent: 4267463 (1981-05-01), Mayumi
patent: 4562427 (1985-12-01), Ecton
patent: 4575794 (1986-03-01), Veneski et al.
patent: 4580137 (1986-04-01), Fiedler et al.

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