Sign method of applying dual-processor configuration DSP

摘要

PURPOSE:To attain a high speed operation without stopping one processor completely with the same program by multiplying a result that input data (x) represented in the complement form of 2 of (n) bits is (n-1)-bit-logical-shifted in an LSB direction and that a positive maximum value is added to the shifted result and the operated result of a function f(1x1) together. CONSTITUTION:It is necessary that f(1x1) and -f(1x1) are outputted based on the positive/negative of data so that an output (y) may become point symme try to 0 when a parameter (x) is positive and negative. Then, it is constituted so as to give a code by mutiplying a result that the data (x) inputted in the complement form of n-bit 2 is (n-1)-bit-logical-shifter and that a positive maxi mum value is added to the shifted result and with the operated result of the function f(1x1) together. Thus, a same program can be executed and code giving to the f(1x1) can be executed by both processors without stopping the one proces sor and a high speed operation is attained.