Soft display word processing system with multiple autonomous pro

Details Soft display word processing system with multiple autonomous pro Soft display word processing system with multiple autonomous pro

1977-02-17

1978-08-29

Thomas, James D.

Boots, shoes, and leggings

G06F 1520, G06F 314, G06F 1300

Patent

active

041108230

ABSTRACT:
A distributed function processing system utilizing a conventional microprocessor operated as a text processor in combination with a plurality of other autonomous processing devices arranged to operate in a coherent processing system. One of the autonomous processors which is a memory control processor serves to periodically overlay a random access accelerator memory with the contents of a main memory system and concurrently resolves conflicts among various other autonomous memory service requests. This processor, therefore, accommodates the data rates of the main memory. The other processor is a display processor which generates signals to a video display system to provide a visual interface to the user and is therefore tied to the video rate. Accordingly, the processing burden is distributed within processors entailing differing rates operating autonomously. The memory control processor resolves and accommodates all of the memory service requests in the system and also performs control operations to support high speed I/O devices. Logic is provided to handle the other interrupts. Also, there is page mapping for context switching of a reference page and repeating logic for decoupling this processor from the other processors. This arrangement allows convenient expansion into plural work stations each sharing a common memory.

REFERENCES:
patent: RE26919 (1970-06-01), Hagelbarger
patent: 3564509 (1971-02-01), Perkins
patent: 3653001 (1972-03-01), Ninke
patent: 3949375 (1976-04-01), Ciarlo
patent: 3973244 (1976-08-01), Lovercheck

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