Main storage memory cards having single bit set and reset...

Details Main storage memory cards having single bit set and reset... Main storage memory cards having single bit set and reset...

G - Physics

06

F

354/238

G06F 7/00 (2006.01) G06F 13/42 (2006.01)

Patent

CA 2026741

MAIN STORAGE MEMORY CARDS HAVING SINGLE BIT SET AND RESET FUNCTIONS ABSTRACT OF THE DISCLOSURE A data processing network includes multiple processing devices, multiple memory cards of main storage, and a shared interface. Each of the memory cards includes memory arrays, an internal register for temporarily storing a data word read from the arrays, and logic circuitry. When one of the processing devices sends a set or reset command to one of the memory cards, the processor also sends a data mask. A data word to be modified is retrieved from a selected address in the memory arrays and latched into the internal register. The logic circuitry applies the data mask to a data word in the internal register, to modify the data word according to the data mask, then returns the data word to the selected address in the arrays.

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