Download Applications of Specification and Design Languages for SoCs: by A. Vachoux PDF

By A. Vachoux

This publication contains a choice of the easiest contributions to the discussion board on Specification and layout Languages held in 2005 (FDL'05). It presents special insights into fresh works facing a wide spectrum of concerns in system-on-chip layout. all of the chapters were rigorously revised and prolonged to supply updated details. additionally they offer seeds for additional researches and advancements within the box of heterogeneous systems-on-chip layout.

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Extra resources for Applications of Specification and Design Languages for SoCs: Selected papers from FDL 2005 (Chdl)

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Introduction SystemC (OSCI, 2006) is an emerging C++ environment for the modelling, the simulation, and the synthesis of electronic systems. , 2002). In addition, it is possible to employ all the advanced descriptive functionalities offered by the C++ language: classes, objects, virtual function, polymorphism, templates, etc. (Stroustrup, 2000). In this way SystemC is able to provide powerful 43 A. ), Applications of Specification and Design Languages for SoCs – Selected papers from FDL 2005, 43–59.

For the process 35 Refining Synchronous Communication onto NoC Best-Effort Services write_rdy read(ch0,ch1 /ch2) ch0 ch1 /ch2 reader sync deSync Bass/treble fillter addSync read adapter writer ch3 /ch4 writer adapter Fig. 6, a PASS could be PASS={reader, sync, deSync, Bass/Treble Filter, addSync, writer}. 6. This leads to a local feedback loop, and we adopt the initial-event approach to deal with it. In this case, write rdy is initially asserted. 6 is sketched as follows, with each component explained briefly in commentary: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 process_class :: Process (){ // initially write_rdy =1; // read_ch0_rdy =0; read_ch1_rdy =0 // sync_rdy =0; compute_done =0; if ( write_rdy ==1){ // (1) reader : nonblocking read ch1 and ch2 if ( read_ch0_rdy ==0) if (( read(ch [0] ,& r_msg1 ))== true) read_ch0_rdy =1; if ( read_ch1_rdy ==0) if (( read(ch [1] ,& r_msg2 ))== true) read_ch1_rdy =1; // (2) sync: synchronize the two events if ( read_ch0_rdy ==1 && read_ch1_rdy ==1) sync_rdy =1; else sync_rdy =0; // (3) deSync : desynchronization by guard if ( sync_rdy ==1 && compute_done ==0){ // process computation // return w_msg and set compute_done to 1 w_msg = compute (r_msg1 , r_msg2 ); write_rdy =0; compute_done =1;} } // (4) addSync : fill synchronization if ( sync_rdy ==1 && compute_done ==1) { // (5) writer : nonblocking write ch3 if ( write_rdy ==0) if (write (ch [3] , w_msg )== true){ write_rdy =1; sync_rdy =0; compute_done =0; read_ch0_rdy =0; read_ch1_rdy =0;}} } 36 Zhonghai Lu et al.

4. Channel Refinement The Nostrum BE service provides in-order, lossless, and bounded-in-time communication between processes. However, its performance is nondeterministic since the message delivery experiences dynamic contentions in the RNIs and network. To capture the characteristics of the BE service, we resort to a stochastic approach. Formally, we develop a unicast BE service channel as a point-to-point stochastic channel: given an input signal of messages {m1 , m2 , . . , mn } to the service channel, the output signal is {d1 , m1 , d2 , m2 , .

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