Video memory clock selection circuit and method

Details Video memory clock selection circuit and method Video memory clock selection circuit and method

1994-02-14

1996-04-30

Heckler, Thomas M.

Boots, shoes, and leggings

395164, 364DIG1, 3642703, 3642372, 3642456, G06F 108

Patent

active

055133401

ABSTRACT:
Disclosed are a configuration-dependent video memory clock selection circuit and method for a computer system. The selection circuit operates in conjunction with a removable video memory module. The module comprises: (1) a circuit board capable of insertion into the computer system as a daughter-card, (2) a plurality of video memory chips located on the circuit board and having a particular logical configuration and (3) a configuration indication circuit located on the circuit board, the indication circuit capable of providing a configuration signal representing the particular logical configuration to video clock signal generator circuitry in the computer system when the circuit board is inserted into the computer system. Thus, the configuration indication circuit and the video clock signal generator circuitry act in concert to provide a configuration-dependent video memory clock selection circuit.

REFERENCES:
patent: 5276856 (1994-01-01), Norsworthy et al.
patent: 5293468 (1994-03-01), Nye et al.

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