Processor interface circuitry for effecting data transfers betwe

Details Processor interface circuitry for effecting data transfers betwe Processor interface circuitry for effecting data transfers betwe

1990-02-07

1993-03-09

Clark, David L.

Boots, shoes, and leggings

395275, 364DIG2, 364926, 364929, 36493144, 36493149, 3649424, 3649428, 3649602, 3649606, 3649654, G06F 1312

Patent

active

051932040

ABSTRACT:
Apparatus for enabling a first processor to cause a second processor to effect a transfer of data between the processors in accordance with data transfer commands sent from the first processor to the second processor is described. The processors each have a program instruction memory for enabling the processors to operate independently and simultaneously when no data transfer is occurring between them, and the apparatus includes data transfer circuitry connected between the processors for enabling the data to be transferred, a program instruction decoder associated with the second processor for normally decoding and executing instructions stored in the program instruction memory of the second processor when no data transfer is occurring, and routing circuitry for carrying the data transfer commands from the first processor to the program instruction decoder for decoding to provide signals to the data transfer circuitry to effect a transfer of data.

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