設(shè)計(jì)時(shí)需要過一款簡(jiǎn)單、低成本的閂鎖電路 (latch circuit) ?圖一顯示的就是這樣一款電路,基本上是一個(gè)可控矽整流器(SCR),結(jié)合了一些離散組件,只需低成本的元件便可以提供電源故障保護(hù)。
上傳時(shí)間: 2013-11-11
上傳用戶:zq70996813
匯編器在微處理器的驗(yàn)證和應(yīng)用中舉足輕重,如何設(shè)計(jì)通用的匯編器一直是研究的熱點(diǎn)之一。本文提出了一種開放式的匯編器系統(tǒng)設(shè)計(jì)思想,在匯編語言與機(jī)器語言間插入中間代碼CMDL(code mapping description language)語言,打破匯編語言與機(jī)器語言的直接映射關(guān)系,由此建立起一套描述匯編語言與機(jī)器語言的開放式映射體系。基于此開放式映射體系開發(fā)了一套匯編器系統(tǒng),具有較高層次上的通用性和可移植性。【關(guān)鍵詞】指令集,CMDL,匯編器,開放式 Design of Retargetable Assembler System Liu Ling Feng Wen Nan Wang Ying Chun Jiang An Ping Ji Li Jiu IME of Peking University, 100871【摘要】An assembler plays a very important role in the field of microprocessor verifications and applications, thus how to build a retargetable assembler system has been a hotspot in this field for long time. This paper presents a new method about the retargetable assembler system design.It provides a kind of language CMDL, code mapping description language. During the process of assembling, assembler languages are firstly translated to CMDL, and then mapped to the machine codes. In an other word, CMDL is inserted between assembler languages and machine codes during the translation procedure. As a medium code, CMDL has a lot of features, such as high extraction, strong descript capabilities. It can describe almost all attributes of assembler languages. By breaking the direct mapping relationship between assembler languages and machine codes, the complexities of machine codes are hided to the users, therefore, the new retargetable assembler system has higher retargetable level by converting the mapping from assembler languages and machine codes to assembler languages and CMDL, and implementationof it becomes easier. Based on the new mapping system structure, a retargetable assemblersystem is developed. It proved the whole system has good retargetability and implantability.【關(guān)鍵詞】instruction set, symbol table, assembler, lexical analysis, retargetability
上傳時(shí)間: 2013-10-10
上傳用戶:meiguiweishi
本文將探討微控制器與 PSoC (可編程系統(tǒng)單晶片)在數(shù)位電視應(yīng)用上的設(shè)計(jì)挑戰(zhàn),並比較微控制器和 PSoC 架構(gòu)在處理這些挑戰(zhàn)時(shí)的不同處,以有效地建置執(zhí)行。
標(biāo)簽: PSoC MCU 比較 數(shù)位電視
上傳時(shí)間: 2013-11-22
上傳用戶:gengxiaochao
這是用verilog寫的一個(gè)簡(jiǎn)單的處理器,雖然只具有5個(gè)指令,但是可以透過這個(gè)範(fàn)例,來了解到cpu的架構(gòu),與如何開發(fā)處理器,相信會(huì)有很大的啟發(fā)。
標(biāo)簽: verilog
上傳時(shí)間: 2014-12-08
上傳用戶:ikemada
數(shù)值分析中的歐拉算法 本文建立在數(shù)值分析的理論基礎(chǔ)上,能夠在Matlab環(huán)境中運(yùn)行,給出了理論分析、程序清單以及計(jì)算結(jié)果。更重要的是,還有詳細(xì)的對(duì)算法的框圖說明。首先運(yùn)用Romberg積分方法對(duì)給出定積分進(jìn)行積分,然後對(duì)得到的結(jié)果用插值方法,分別求出Lagrange插值多項(xiàng)式和Newton插值多項(xiàng)式,再運(yùn)用最小二乘法的思想求出擬合多項(xiàng)式,最後對(duì)這些不同類型多項(xiàng)式進(jìn)行比較,找出它們各自的優(yōu)劣。
上傳時(shí)間: 2013-12-18
上傳用戶:yoleeson
類神經(jīng)網(wǎng)路,MLP程式碼,可以計(jì)算多層架構(gòu)之類神經(jīng)網(wǎng)路運(yùn)算~C
標(biāo)簽:
上傳時(shí)間: 2013-12-28
上傳用戶:txfyddz
VB程式碼,可以和RS232串列通訊做結(jié)合,加以利用和Com port互動(dòng)
標(biāo)簽: 程式
上傳時(shí)間: 2015-10-18
上傳用戶:linlin
灰色理論下之最基本操作元,灰生成之matlab源碼,可很快計(jì)算出數(shù)據(jù)各階之生成結(jié)果
標(biāo)簽: 基本操作
上傳時(shí)間: 2013-12-01
上傳用戶:aappkkee
JVT所釋出的H.264/MPEG-4 AVC REFERENCE SOFTWARE MANUAL,,裡面詳細(xì)介紹了jm的架構(gòu),以及其中 各種演算法所存在的類別,所以接觸jm的朋友,是一個(gè)非常好的嚮導(dǎo),幫助你了解大概的jm雛形.
標(biāo)簽: REFERENCE SOFTWARE MANUAL MPEG
上傳時(shí)間: 2013-12-20
上傳用戶:athjac
HAMMING CODE在偵錯(cuò)及更正的原理實(shí)現(xiàn),達(dá)到較快速的結(jié)果,浪費(fèi)資源較少
上傳時(shí)間: 2015-12-05
上傳用戶:teddysha
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