Dynamic priority queue occupancy scheme for access to a demand-s

Details Dynamic priority queue occupancy scheme for access to a demand-s Dynamic priority queue occupancy scheme for access to a demand-s

1982-01-07

1984-12-11

Thomas, James D.

Boots, shoes, and leggings

370 60, 370 85, 3408255, G06F 1516, G06F 946, G06F 304

Patent

active

044882181

ABSTRACT:
Circuitry allocates requests for demand-shared bus access among a plurality of service requesting ports. During bus contention time, each requesting port synchronously and sequentially applies the digits of its assigned unique priority code to the bus beginning with the most significant digit. After the application of all digits, only the requesting port having the highest code remains in contention and it seizes the bus. Increased flexibility in port preference is provided by the use of a plurality of status flip-flops in each port for generating dynamic port parameter bits. The generated parameter bits are normally applied to the bus as the most significant bits of a dynamic port priority code during contention time. However, the selective application of a mask signal to a mask conductor during contention time causes each requesting port to prevent any parameter bits from being applied to the bus as long as the mask signal remains. This returns control of the port preference to any unmasked parameter bits and to the assigned port priority codes.

REFERENCES:
patent: 3796992 (1974-03-01), Nakumura et al.
patent: 3818447 (1974-06-01), Craft
patent: 3983540 (1976-09-01), Keller et al.
patent: 4096571 (1978-06-01), Vandermey
patent: 4161779 (1979-07-01), Spencer et al.
patent: 4171536 (1979-10-01), Heuer et al.
patent: 4330857 (1982-05-01), Alvarez et al.
patent: 4358829 (1982-11-01), Branigin et al.
patent: 4385350 (1983-05-01), Hansen et al.
patent: 4438489 (1984-03-01), Heinrich et al.

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