Synthesis script

All the synthesis steps mentioned above can be executed either automatically or interactively. The programmed ASIC emulator can be inserted directly into the overall mechatronic system to facilitate real-time test runs. In the following, all main synthesis steps will be described in the same top-down sequence as they are implemented through the synthesis script. Throughout the rest of the chapter, the terms ASIC emulator (board), rapid prototyping board, and target architecture will be used synonymously. 

The application domain and ASIC emulator architecture strongly influence the overall synthesis script as well as the actual algorithms for solving single synthesis tasks. In order to achieve efficient solutions, our whole approach has been tuned toward real-time system applications as they are found in mechatronic systems. To support the understanding of the implemented approach/algorithms, this section will describe the intended application domain and ASIC emulator architecture in more detail. 

If you are still unable to meet timing, begin with the source HDL and re-compile using updated synthesis script that identifies multi-cycle paths and path groups. 

Example 5.2 VHDL Code for FSM and Synthesis script package fsm states is... 

Synthesis scripts. Depending on the characteristics of the application, a specialised synthesis script can be selected to invoke the appropriate tools in the appropriate sequence. 

The outline of this paper is as follows. In Section 2, the architectural styles which are currently supported by the CATHEDRAL environment are described. Section 3 focuses on the synthesis framework, which is the core of the synthesis system. The different synthesis tasks and their composition in a synthesis script are discussed in Section 4. Finally, in Section 5, our approach is evaluated on a realistic design from the domain of digital audio. 

The core of the CATHEDRAL environment is the synthesis framework [Lan91]. In view of the flexible composition of specialised synthesis scripts and the implementation of many specific synthesis tools, the key issues of this framework are design representation and design transformation ... 

Synthesis scripts and techniques for mi-crocoded and lowly multiplexed data-paths... 

In Section 1, it has been motivated that a relation exists between the target architectural style and the corresponding target application domain. For each particular style, both the architectural and the application features should be exploited in order to arrive at an efficient interactive synthesis methodology which can compete with manually derived designs. As a consequence, this has an effect on both the sequence of synthesis tasks to be performed, and on the choice of synthesis techniques used to solve the individual (sub)tasks. These two factors combined are called the synthesis script henceforth. Because of the strong relation with the architectural styles, we have opted for very customised scripts. 

Only when the synthesis script and the detailed characterisation of the individual steps are fully specified, the work can start to support this customised methodology with synthesis techniques and eventually with synthesis tools. Here, it has to be carefully weighed in each case whether a new technique or tool should be developed, or whether an existing tool can be reused in a new script tuned to another style. Actually, this reuse of tools in different scripts forms one of the main motivations for our common synthesis framework discussed in Section 3. Each tool is organised as a separate C or C-h-f programme, while the script itself is implemented as a standard Unix shell script. Only a textual user interface is available at present. 

Figure 7 Simplified synthesis scripts for the MP style (left) and HLMD style (right). The tasks common to both are listed in the middle.

SVL script. Not surprisingly, only 60 molecules passed this filter and were then re-ranked by GOLD scoring function (3). One of the 10 top-scored molecules was proposed for synthesis and the compound 3 was determined to have an IC50 value of 3.0 xM. Subsequent X-ray structure of 3 in complex with NS5B was solved at 2.0 A and this molecule shows a binding mode just as predicted in the thumb domain (7) (Fig. 9.8). 

F. Ye, S. Chen, and M. Iwasa. Synthesis and properties of barium aluminosilicate glass-ceramic composites reinforced with in situ grown SijN4 whiskers. Script. Mater., 48, 1433-8 (2003). 

The other chapters cover the synthesis and chemistry of the more common heterocycles in order of increasing ring size. The publication of the Second Edition of Comprehensive Heterocyclic Chemistry has provided a welcome updating of the 1984 reviews and we intend that these annual surveys will eontinue to provide a source of information on further important advances. Because of the ever increasing volume of literature to be surveyed we have asked our authors to provide selective and critical reviews of the more significant papers when space does not allow comprehensive coverage. We appreciate their cooperation in this, and particularly for providing camera-ready scripts in a standardised format. The reference system used in the chapters is based on journal codes as described in Comprehensive Heterocyclic Chemistry. 

For those instances where a simple GUI with sliders and buttons is helpful, we use Tcl/Tk (which is freely distributed for all the supported TooIKit platforms). A number of Tcl/TTt GUI scripts are distributed with the TooIKit release. For control, the Synthesis Toolkit uses raw MIDI (on supported platforms), and SKINI Synthesis TooIKit Instrument Network Interface, a MIDI-like text message synthesis control format). See the TooIKit documentation at http //www.akpeters.com/rss/ for more information on SKINI. 

There are a number of Tcl/Tk GUIs supplied with the Synthesis ToolKit projects. These scripts require Tcl/Tk version 8.0 or later, which can be downloaded for free over the internet. On Unix and Windows2k/XP platforms, you can run the various GUI executable scripts (e.g., GUIPhysical) provided with each project to start everything up (you may need to symbolically link the wishXX executable to the name wish). The Physical (physical.bat) script implements the following command-line sequence ... 

We are using the HOL 90.7 version based on SML 0.93 running on a SUN Ultrarl workstation with 64 Megabytes of main memory imder SunOS 5.5. The proof script for the pre-synthesis verification part consists of about 850 lines of SML code and is executed in about 4 seconds. 

With the platform mentioned in 3.6, we have performed the post-synthesis verification procedure for several examples from the three scenarios mentioned. We here present results for one example for each scenario. EXAMPLEl is a working example performed by the AMICAL system. EXAMPLE2 is a part of the IKS pseudocode, where the register transfer description has been extracted by hand from microcode and a logic level implementation. EXAMPLES is a basic block from a differential equation solver performed by SUSAN. The proof script containing proofs of lemmas as well as HOL level and meta level decision procedures consist of about 2000 lines of SML code. 

The design of an architecture for this motion estimation application, using the tuned design script of figure 1, is presented in the following sections. It illustrates the individual steps for which a short summary of and a reference to the applied synthesis techniques are supplied. 

It has been demonstrated that the proposed design script for regular array synthesis leads to efficiently designed architectures. The script has been developed in the context of the Cathedral project. The re-indexing and localization tools, developed respectively at IMEC and IRISA, can be used to allow a higher input behavioral description of an application. The transformations provided by these tools can also be useful in other architecture synthesis areas. 

First, the basic arithmetic, logic, and relational operations in the application are mapped to a set of dedicated ASUs. This is done in four basic synthesis steps in the script [18, 3, 8]. 

This first volume of the Scripts in Inorganic and Organo-metallic Chemistry addresses graduate students in the fields of coordination compounds and organic synthesis. It covers the chemistry and structural aspects of iron-carbon compounds with an iron-carbon double bond. The first part deals with the carbene moiety, the second with vinylidene ligands. 

In this section we demonstrate the synthesis methodology and Cathedral-2nd script to design an efficient architecture for a system for compression of the dynamic range of audio signals. 

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