Mini-programmable controller

Details Mini-programmable controller Mini-programmable controller

1979-05-30

1981-08-04

Zache, Raulfe B.

Boots, shoes, and leggings

364107, 371 51, G05B 1902, G06F 1100

Patent

active

042825849

ABSTRACT:
A small, low-cost programmable controller is programmed with both bit-oriented and word oriented program instructions that are stored in a main memory. A microprocessor couples each program instruction to a respective interpreter routine of machine instructions stored in an interpreter memory. Bit-oriented program instructions with a common operation code but different bit-pointer codes are coupled to their own respective interpreter routines. The program instructions have operation codes and bit pointer codes that are assigned by a program panel, and are then translated by a translator PROM as they are coupled to an interpreter routine. Operand addresses are read through the translator PROM unchanged. Error-locating circuitry assists in detecting faulty chips in the main memory as the control program is executed. The hardware required to execute the control program is minimized, while the translator PROM allows the processor unit to be used with prior program panels.

REFERENCES:
patent: 3646522 (1972-02-01), Furman et al.
patent: 3748649 (1973-07-01), McEowen et al.
patent: 3810118 (1974-05-01), Kiffmeyer
patent: 3942158 (1976-03-01), Dummermuth
patent: 4095094 (1978-06-01), Struger et al.
patent: 4107785 (1978-08-01), Seipp
patent: 4165534 (1979-08-01), Dummermuth et al.

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