外文翻譯---硬件軟件的設(shè)計(jì)和開發(fā)過程(文件)
【正文】 準(zhǔn)確循環(huán)仿真將能夠解決其他結(jié)構(gòu)探尋空間問題。 這個(gè)行業(yè)的發(fā)展趨勢(shì)就是建立十分準(zhǔn)確的結(jié)構(gòu)模型庫，用來直接執(zhí)行嵌入式軟件。雖然對(duì)于結(jié)構(gòu)的仿真大概只有 80%的正確率，但是那被認(rèn)為已經(jīng)足夠選擇合適的微控制器、計(jì)時(shí)器和存儲(chǔ)器。左上方是系統(tǒng)功能模型的早期修 正，稱之為系統(tǒng)行為。最后的虛擬系統(tǒng)滿足所有的設(shè)計(jì)參數(shù)，并很快被轉(zhuǎn)化為實(shí)際產(chǎn)品。這是因?yàn)槭袌?chǎng)實(shí)時(shí)變化的限制，系統(tǒng)的結(jié)構(gòu)繼續(xù)構(gòu)筑于最初的硬件原型，而沒有對(duì)其他選 擇進(jìn)行足夠的探尋。創(chuàng)造一個(gè)使用準(zhǔn)確硬件模型的虛擬系統(tǒng)能夠給工程師們帶來很多好處，如：從結(jié)構(gòu)上探尋硬件和軟件的功能；創(chuàng)造出靈活的硬件原型；對(duì)模型的生產(chǎn)能力和可攜帶 性作出更為準(zhǔn)確的分析；在制作流程中提早軟件開發(fā)的時(shí)間；在虛擬硬件測(cè)試時(shí)能夠快速進(jìn)行調(diào)試。這篇論文也提出了一個(gè)虛 擬的汽車氣囊系統(tǒng)的實(shí)施應(yīng)用，探討了虛擬系統(tǒng)發(fā)展的好處。并且，只有硬件原型單元被創(chuàng)建，軟件的應(yīng)用才能得以實(shí)施，這使得軟件的開發(fā)者和系統(tǒng)檢測(cè)工作組處于一個(gè)很不利的位置。由于每次返工都需要花費(fèi)大量投資，系統(tǒng)層面上的檢驗(yàn)成為了整個(gè)硬件檢驗(yàn)過程的焦點(diǎn)。高價(jià)格是和 ASIC強(qiáng)調(diào)硬件制作業(yè)必須努力保證在硅片進(jìn)行 設(shè)計(jì)之前，預(yù)期的功能都能夠正確實(shí)現(xiàn)這一要求相關(guān)的。現(xiàn)在， EDA業(yè)界正在進(jìn)一步提升抽象層面，通常稱之為電子系統(tǒng)層面設(shè)計(jì)。與市場(chǎng)同步的制約會(huì)把軟件的檢測(cè)推向系統(tǒng)的水平，并導(dǎo)致對(duì)生產(chǎn)硬件的更大需求在軟件開發(fā)的流程中更早得到滿足。而 C/C++的編寫器、譯制器還有連接器的出現(xiàn)能使抽象層與潛在的硬件分離，使軟件完全實(shí)現(xiàn)平臺(tái)獨(dú)立，容易閱讀，方便編譯，更有效管理。這種改變是通過設(shè)計(jì)的抽象化實(shí)現(xiàn)的，并且通過革新設(shè)計(jì)自動(dòng)控制工具使得這種改變繼續(xù)運(yùn)用在更高水平上。 the highly accurate and fast simulation of a virtual system known as cycleaccurate simulation. This portion of the codesign market has matured to the point that it is now feasible to simulate a moderate sized ECU, such as an airbag deployment module, at about 1/15th the speed of the actual hardware. As additional mod?ls bee available, these cycle?ccurate simulations will be capable of solving much of the architectural exploration space as we?l. De?ailed an? highly accurate simulati? n encourages evaluation of th? system behavior on?a pro?osed architecture. The models, as well as the target code, can be adapted to determine the optimum design solution. Full target software simulation is supported using a 32bit CPU Virtual Processor Model (VPM), the microcontroller peripheral models, system ASIC models, and the environmental stimuli. The VPM is able to load and simulate the same executable image as used in traditional bench development. The models may be exported from CoMET to the lower cost METeor integrated development environment to provide a fixed platform (models cannot be changed) virtual product simulation. SIMULATION SPEED AND ACCURACY Before we begin discussing the system, it is important to present some background material that highlights the levels of modeling abstraction and how they are best applied. In general, total simulation s? e?d decreasesРis detail is added to the model. Fu?ctional models execute orders of magnitude faster than the m?dels used during ?onverification. The levels of abstraction used in product modeling include : – Ve?y little to no timing accuracy of the real hardware. 耠 Functional Simulation – Contains estimated execution time of individual module?. Appr?ximate –? Timed fun?tional simulation techniques applied to instruction set and cycle accurate simulation. – Crosspiled code executed on model of target CPU. Accurate – Simulation is very similar (or identical) to hardware behavior. 二、英文翻譯 硬件 /軟件的設(shè)計(jì)和開發(fā)過程 埃弗瑞特 魯普金和邁克 蓋布里克 Delphi 公司電子和安全部門 介紹 半導(dǎo)體產(chǎn)業(yè)的生產(chǎn)過程和設(shè)計(jì)技術(shù)的進(jìn)步，革新了汽車和消費(fèi)電子產(chǎn)品。 of all IC and ASIC designs require a respin of silicon, where 70% of the respins are due to logic or functional errors that verification efforts should have caught . With the huge investment required for each respin, system level verification is being a focus of the overall hardwar
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