ex alloction TheCAT Web Services Overview前分配猫 Web服务概述.pptVIP

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ex alloction TheCAT Web Services Overview前分配猫 Web服务概述.ppt

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ex alloction TheCAT Web Services Overview前分配猫 Web服务概述

99/07/27 Example Example of Scheduling and Allocation based on Jaap Hofstede #define m1 … #define m2 … #define m3 … #define m4 … main() { float t, i1, o1, d1=0.0, d2=0.0; while (1) { in(i1); t = i1 + m3*d2 + m1*d1; o1 = t + m4*d2 + m2*d1; d2 = d1; d1 = t; out(o1); } } Draw data flowgraph Design of Controller – stage 1 All six registers have an enable input, ena Rx.ena M1 and M4 have 1 control input, s: Mx.s M2 and M3 have 2 control inputs, s1 and s0: Mx.s1 and Mx.s0 Controller has four states: State1, State2, State3, State4 Design of Controller – details All six registers have an enable input, ena Rx.ena M1 and M4 have 1 control input, s: Mx.s M2 and M3 have 2 control inputs, s1 and s0: Mx.s1 and Mx.s0 Controller has four states: State1, State2, State3, State4 Design of Controller – stage 2 R1.ena = M1.s = M3.s0 = State2 + State4 R2.ena = R3.ena = State1 + State3 R4.ena = R5.ena = State2 R6.ena = M2.s1 = State4 M2.s0 = M4.s = State2 + State3 M3.s1 = State3 + State4 Design of Controller – details R1.ena = M1.s = M3.s0 = State2 + State4 R2.ena = R3.ena = State1 + State3 R4.ena = R5.ena = State2 R6.ena = M2.s1 = State4 M2.s0 = M4.s = State2 + State3 M3.s1 = State3 + State4 Design of Controller – stage 2 R1.ena = M1.s = M3.s0 = State2 + State4 R2.ena = R3.ena = State1 + State3 R4.ena = R5.ena = State2 R6.ena = M2.s1 = State4 M2.s0 = M4.s = State2 + State3 M3.s1 = State3 + State4 IIR Filter Specification in C IIR Filter with 4 coefficients Recursive circuit Original dataflow graph Memory elements #define m1 … #define m2 … #define m3 … #define m4 … main() { float t, i1, o1, d1=0.0, d2=0.0; while (1) { in(i1); t = i1 + m3*d2 + m1*d1; o1 = t + m4*d2 + m2*d1; d2 = d1; d1 = t; out(o1); } } t This is example of wide class of circuits called linear systems with applications in communication, image processing, radar, control, robotics, prediction etc . See 573 class Please note the feedback loop in this circuit m1 ? + ? + ? + ? + i1 o1 D2 D1