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Recently, as one dynamic reconfigurable device, optically reconfigurable gate arrays (ORGAs) that consist of a gate array VLSI, a holographic memory, and a laser array have been developed to achieve greater than 1 Teragate virtual integration, which is much greater than the integration that is possible using currently available VLSIs. If the ORGA can be used, a large software system can be implemented directly as hardware so that a large real-time system can be realized. Currently, a programmable ORGA architecture has been proposed to support user programmability. This paper presents the demonstration result of a multi-context programmable ORGA using a silver-halide non-volatile holographic memory and a corresponding writer system.