| 摘要 |
<p>A single-instruction-multiple data SIMD array processor (10) comprising a multi-dimensional array (12) of processing elements P(i,j) and control logic (14) for issuing global instructions to said array, is provided with processing elements which comprise a programmable decoding means for individually decoding a global instruction, the programmable decoding means of respective processing elements being programmable in response to a global load instruction from the control logic. In a particular example of a SIMD array processor as described, the programmable decoder comprises programmable look-up table for locally modifying selected bits of a global instruction, to form locally modified bits and fixed decoding logic for decoding the bits of the global instruction as received and the locally modified bits. In this processor, information defining the local modifications is loaded into the look-up table from storage in response to global load instruction. In the described example, the programmable decoding means are adapted to locally modify global information transfer instructions, such that data may be transferred in a plurality of directions at one time within the array of processors. A SIMD array processor in accordance with the present invention is particularly suitable for image processing applications and accordingly may be implemented as part of a display system.</p> |
