Boolean processor for a progammable controller

Details Boolean processor for a progammable controller Boolean processor for a progammable controller

1984-08-02

1987-12-29

Harkcom, Gary V.

Boots, shoes, and leggings

G06F 922, G06F 900, G05B 1918

Patent

active

047165413

ABSTRACT:
A very fast and efficient Boolean processor ("BP") (20) capable of compiling a full range of diagrams or expressions in ladder, logigram, and Boolean with a small but powerful instruction set. The BP includes an instruction decoder (34), combinatoric logic (35), a T-register (42) which holds the temporary results of a sequential AND operation, an N-register (43) which holds the initial Boolean value of T, a Binary Accumulator Memory ("BAM") (40) which is used as a scratchpad for a program which evaluates a ladder or logigram diagram or a Boolean expression, a source address ("S") in BAM (40) from which an initial operand is taken, a destination address ("D") in BAM (40) in which the result of an operation is stored, and a destination address register ("DAR") (45) in which the destination address is stored. The instruction set includes a subset of input instructions and a subset of structure instructions. The operand (I) of an input instruction is an address in IOIM (25). The operands (S,D) of a structure instruction are source and destination addresses in BAM (40). Each input instruction reads the value of a bit from IOIM and has the effect of logically combining this bit value with the value held in the T-register and possibly with the destination bit in BAM. The structure instructions cause operation on the pair of addresses S and D, and either describe the structure of the diagram to be compiled or permit the performance of logical functions between nodes in the diagram.

REFERENCES:
patent: 3813649 (1974-05-01), Struger et al.
patent: 3938104 (1976-02-01), Henry et al.
patent: 3944984 (1976-03-01), Morley et al.
patent: 3953834 (1976-04-01), Burkett et al.
patent: 3978454 (1976-08-01), Willard
patent: 4021783 (1977-05-01), Highberger
patent: 4070702 (1978-01-01), Grants et al.
patent: 4118792 (1978-10-01), Struger et al.
patent: 4122519 (1978-10-01), Bielawski et al.
patent: 4165534 (1979-08-01), Dummermuth et al.
patent: 4200914 (1980-04-01), Kintner
patent: 4200915 (1980-04-01), Struger et al.
patent: 4213174 (1980-07-01), Morley et al.
patent: 4215395 (1980-07-01), Bunyard et al.
patent: 4215396 (1980-07-01), Henry et al.
patent: 4215398 (1980-07-01), Burkett et al.
patent: 4215399 (1980-07-01), Pavicic et al.
patent: 4217658 (1980-08-01), Henry et al.
patent: 4228495 (1980-10-01), Bernhard et al.
patent: 4250563 (1981-02-01), Struger
patent: 4266281 (1981-05-01), Struger et al.
patent: 4302820 (1981-11-01), Struger et al.
patent: 4553224 (1985-11-01), Struger et al.

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