Raster scan video controller with programmable prioritized shari

Details Raster scan video controller with programmable prioritized shari Raster scan video controller with programmable prioritized shari

1985-12-30

1988-11-01

Zache, Raulfe B.

Boots, shoes, and leggings

340799, 364521, G06F 946

Patent

active

047824620

ABSTRACT:
In a bit-mapped display system, a logical subsystem for programmable sharing of access to a memory in a computer system among a plurality of system resources wherein various modes of operation are supported by the logic and are programmably selected by the user. The use of display memory is controlled between updating and display accesses to prevent breakup of the video image while said image is being changed.

REFERENCES:
patent: 3676861 (1972-07-01), Ruth
patent: 4096572 (1978-06-01), Namimoto
patent: 4151592 (1979-04-01), Suzuki et al.
patent: 4209832 (1980-06-01), Gilham et al.
patent: 4400771 (1983-08-01), Suzuki et al.
patent: 4484302 (1984-11-01), Cason et al.
patent: 4542376 (1985-09-01), Bass et al.
patent: 4704697 (1987-11-01), Kiremidjian et al.

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