Honeywell Information Systems Inc.

Elias Safdie

Joseph L Ryan

Richard R Watkins

Frederick E Kobs

A logical control system is provided for accommodating both single and double byte accesses to a video terminal system display memory to supply video character and visual attribute data to a video screen without limiting the quantity of visual attributes and without the needless occupation of video screen character positions by visual attribute characters.

Access control logic for video terminal display memory

A logic memory control system for accommodating plural read/write requests to a video terminal display memory is provided without the need for multiplexing common busses shared by the video terminal logic devices accessing the display memory, or for compromising video terminal data transfer rates.

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Chelmsford, MA, United States of America

Elias Safdie