Industrial controller compiler with expandable instruction set

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395710, 395707, 364147, 364140, G06F 944, G06F 930

Patent

active

058190970

ABSTRACT:
A compiler for an industrial controller uses a user modifiable instruction table to contain code fragments necessary to compile particular instructions. During compilation, the instructions are replaced with the code fragments. Thus new instructions recognizable by the compiler may be added simply by editing this instruction table. Multiple instructions having the same name are resolved through a best match of operand types which examines the possible data loss in conversion of operand types to select a particular one of the instructions.

REFERENCES:
patent: 5005152 (1991-04-01), Knutsen
patent: 5247693 (1993-09-01), Bristol
patent: 5287548 (1994-02-01), Flood et al.
patent: 5386569 (1995-01-01), Harada et al.
patent: 5504902 (1996-04-01), McGrath et al.
patent: 5508909 (1996-04-01), Maxwell et al.
patent: 5586330 (1996-12-01), Knudsen et al.

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