Method and apparatus for clearing the memory of a video computer

Details Method and apparatus for clearing the memory of a video computer Method and apparatus for clearing the memory of a video computer

1983-12-30

1988-01-19

Fears, Terrell W.

Static information storage and retrieval

Read/write circuit

Sipo/piso

365128, 365238, G11C 1300

Patent

active

047208198

ABSTRACT:
In a video computer system and the like having a bit-mapped RAM component including a shift register, an improved method is provided for rapidly clearing the RAM in order to prepare the system to receive new input data. More particularly, a preselected number of predetermined data bits corresponding to the number of columns in the RAM is serially shifted into the register. Thereafter, the contents of the shift register are progressively shifted into each of the rows in the RAM until all rows are filled.

REFERENCES:
patent: 4228526 (1980-10-01), Lee
patent: 4493060 (1985-01-01), Varshney

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