Processor Description Languages, Volume 1 by Prabhat Mishra

By Prabhat Mishra

Effective layout of embedded processors performs a severe position in embedded platforms layout. Processor description languages and their linked specification, exploration and fast prototyping methodologies are used to discover the very best layout for a given set of functions less than a variety of layout constraints, equivalent to sector, strength and function. This booklet is the 1st, complete survey of contemporary structure description languages and may be a useful reference for embedded process architects, designers, builders, and validation engineers. Readers will see that using specific structure description languages will result in productiveness earnings in designing specific (application-specific) kinds of embedded processors. * complete assurance of all glossy structure description languages... use the best ADL to layout your processor to suit your application;* newest details to be had approximately every one structure description language from the time chasing down trustworthy documentation;* Describes how every one structure desccription language permits key layout automation projects, akin to simulation, synthesis and the ADL in your layout cycle;

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Some of the behavioral languages (such as ISDL) are also used for hardware generation. For example, the HDL generator HGEN [20] uses ISDL description. Mixed languages such as nML, LISA, and EXPRESSION capture both the structure and behavior of the processor. The synthesizable HDL generation approach based on LISA language [31 ] produces an HDL model of the architecture. The designer has the choice to generate aVHDL,Verilog, or SystemC representation of the target architecture [31]. The HDL generation methodology presented by Mishra et al.

Initially, results were recorded on paper, most of the time at a lower resolution. The number of paper rolls increased over time and there was hardly any hope that the collected data could ever be analyzed. Therefore, Zimmermann started a project aiming at recording the data digitally on magnetic tape. Recording every sample was still unfeasible, so data reduction techniques had to be applied. Zimmermann proposed an algorithm for approximating recorded data. The algorithm was too complex to be executed in real time on the available computer.

However, all compiled simulators rely on the assumption that the complete program code is known before the simulation starts and is further more runtime static. 4 Architecture Synthesis Compile Time . . 4 Compiled simulation. are typically used in embedded systems design flow. Two recently proposed simulation techniques (JIT-CCS [25] and IS-CS [26]) combine the flexibility of interpretive simulation with the speed of the compiled simulation. The just-in-time cache compiled simulation (JIT-CCS) technique compiles an instruction during runtime,just-in-time before the instruction is going to be executed.

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