Interlaced programmable logic array having shared elements

Details Interlaced programmable logic array having shared elements Interlaced programmable logic array having shared elements

1982-06-10

1985-03-19

Malzahn, David H.

Boots, shoes, and leggings

364716, 307465, G06F 750

Patent

active

045063419

ABSTRACT:
A programmable PLA circuit in which an interlaced AND/OR array is provided which has both common input and common output lines. Separate AND and OR functions are generated during two different timing intervals such that both of the logical arrays can physically share input and output circuit elements. A binary adder is described in which pairs of array output lines are applied to the same Exclusive-NOR circuits during the two time intervals to provide the Exclusive-NOR of product terms during the AND array time interval and to provide the Exclusive-NOR of sum of product terms or the sum of the Exclusive-NOR of product terms during the second time interval.

REFERENCES:
patent: 3566153 (1971-02-01), Spencer, Jr. et al.
patent: 3593317 (1971-07-01), Fleisher
patent: 3702985 (1972-11-01), Proebsting
patent: 3761902 (1973-09-01), Weinberger
patent: 3890603 (1975-06-01), Jones et al.
patent: 3924243 (1975-12-01), Vermeulen
patent: 3936812 (1976-02-01), Cox et al.
patent: 3974366 (1976-08-01), Hebenstreit
patent: 3975623 (1976-08-01), Weinberger
patent: 3987287 (1976-10-01), Cox et al.
patent: 4032894 (1977-06-01), Williams
patent: 4037089 (1977-07-01), Horninger
patent: 4124899 (1978-11-01), Birkner et al.
patent: 4140967 (1979-02-01), Balasubramanian et al.
patent: 4237542 (1980-12-01), Cukier
Greenspan, "Multiple Partitioned Programmable Logic Array", IBM TDB, vol. 19, No. 5, Oct. 1976, pp. 1780-1781.
Robbins, "Array Logic Short Path", IBM TDB, vol. 19, No. 7, Dec. 1976, pp. 2544-2546.
Weinberger, "High-Speed Programmable Logic Array Adders", IBM J. Res. Develop., vol. 23, No. 2, Mar. 1979, pp. 163-178.
Schmookler, "Design of Large ALUs Using Multiple PLA Macros", IBM J. Res. Develop., vol. 24, No. 1, Jan. 1980, pp. 2-14.

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