Inventors:
Salvatore R. Provanzano - Melrose MA
Wilbert H. Aldrich - Winchester MA
Robert A. D'Angelo - Windham NH
Emil P. Drottar - Ipswich MA
John J. Finnegan - Hudson NH
James Heom - Bedford MA
Lawrence W. Hill - Arlington MA
Ronald D. Malcolm - Andover MA
Michael C. Nollet - Andover MA
Baruch S. Perlman - Cambridge MA
Michael B. Tressler - Tewksbury MA
John E. VanSchalkwyk - Andover MA
Kincade N. Webb - Cambridge MA
Assignee:
Gould Inc. - Rolling Meadows IL
International Classification:
G06F 700
Abstract:
An improved programmable controller having the ability to use two different data bases while presenting to the outside world a uniform word size. The programmable controller includes pipeline processing and hardware solution of a user control program in a network node format. A memory management scheme is provided allowing for the direct addressability of one-half million words by utilization of a page register. The programmable controller can be incorporated into a network containing other programmable controllers. The programmable controller also incorporates a multi-task interrupt so that the processor can handle more than one job at any particular time. Input/output tasks are handled logically in the scan solving the user networks rather than being based upon a particular physical area of the controller memory.