TP—801单板机简易反汇编程序

TP—801是目前应用较为普遍的一种CPU为Z—80的单板机,但该机的监控程序中没有反汇编程序。为了调试程序的方便,我们自行编制了适用于TP—801A(B)单板机的简易反汇编程序。利用该程序,可以打印出目标程序的清单,其中每一行就是一条指令,用16进制码表示该指令的全部字节,并有该指令的地址。该程序仅占344字节,     

IBM-PC/XT微型机与Z80单板机的通讯

本文介绍了IBM-PC/XT微型机与Z80单板机进行通讯的技术,在分析RS-232C接口及零态调制解调器性能、分析Z80-SIO及异步通讯适配器特性的基础上,利用Z80汇编语言及8088汇编语言设计了通讯软件,实现了不同类型微型机间的通讯。     

单板微型机上使用的算术运算程序

<正> 一、前言单板微型机的应用近年已普遍起来,它作为学习微型计算机的工具、生产过程控制、智能仪器的部件等等,无疑具有价格低廉,使用方便等优点。但是如果要让它来进行最简单的算术运算就不那么方便了。单板微型机的学习者往往希望能够通过编程,实现算术运算,却又感到相当费事。为此,我们介绍一种用 Z80单板微型机指令编制的多字节算术运算程序,     

使用Z80的线切割机的微机控制系统

本文利用Z80单板计算机来实现对线切割机的自动控制。这个控制系统以Z80单板计算机为中心,保留了原有数控装置中的高频电源、步进电机的功率驱动器、变频脉冲发生器和直流电源,其余部分均可删除。由于用Z80单板计算机代替了七十年代初期复旦型的30多块印刷线路板的作用,在功能上不仅胜任数控装置所能完成的各种运算和控制外,还增加了反向自动补偿及断丝自动回原点等,对提高加工精度起了明显的作用。     

Z—80单板机监控程序的改进与提高

本文指出了现有Z—80单板机监控程序的不足之处。介绍了一个更为完善的Z—80单板机的监控程序NA—802,比原有监控的功能和特性有所增加和改进。用户只要将写有NA—802监控的2716直接代替原有监控EPROM片,就可以使Z—80单板机发挥更高的效能。大大方便了用户。本文还以NA—802中的一个程序段为实例,作了编程技巧的分析和讨论。     

80C51单片机定时误差的研究

随着80C51在工业上的广泛应用,对定时精度的要求也越来越高。但是由于指令周期考虑不全和硬件自身的原因易引起定时误差。从软硬件方面分析了误差原因,并针对误差不确定性的特点从指令执行周期、计数器初值、计数器当前值、适时开关中断的角度出发给出了纠正方法。     

利用单板机(DBJ—Z80、TP—801)实现2732的编程

本文是在分析2716和2732EPROM 的编程条件及其芯片外形结构的基础上,找出了2716和2732的共性与特性,利用 Z80单板机具有对2716EPROM 的编程功能,在电路上稍加简便地改装就可实现对2732EPROM 的编程,从而既扩大了 Z80单板机的功能,又方便了具有单板机的用户,经济且简便地实现了对2732EP-ROM 的编程。     

z-80指令的计算机辅助教学研究

本文介绍了z-80指令的计算机辅助教学系统。该系统具有使用方便、结构清晰、形象的特点。其软件是在TRS-80 BASIC Ⅱ的管理下运行的。     

Z_80并行接口芯片功能编程探微

本文对Z80-CPU并行接口芯片PIO、CTC的初始化编程中遇到的难点、疑点作了较系统的分析、归纳、并提出了一些自己的看法。     

Z—80目标程序的自动重定位

本文讨论 Z-80目标程序的静态自动重定位问题.文中给出 Z-80指令的重定位字典和相应的重定位算法,据此可自动、准确、快速重定位任何 Z-80目标程序.     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that     

Call for Papers

<正>"The Journal of Shanghai Normal University:Mathematics"is published by Shanghai Normal University as regular issues of The Journal of Shanghai Normal University each year from 2014 in English.The editors-in-chief of the issues are professors Yuhao Cong and Maoan Han.The Journal of Shanghai Normal University was started in 1958 with     

Journal of Donghua University ( English Edition) Contents of Volume 31

正~~     

Brief Introduction to “Journal of Jilin University( Science Edition) ”

<正>"Journal of Jilin University(Science Edition)"is a comprehensive academic journal in the fields of science sponsored by Jilin University and administrated by the Ministry of Education of the Peoples Republic of China.The journal started publication in 1955.The original name at starting publication was"Journal of Natural Science of Northeast People University",which was changed into"Acta Scientiarum Naturalium Universitatis Jilinensis"in 1958 owing to the name change of the university.The present journal name has