汇编语言程序设计系列讲座（一）

本系列讲座的目的是帮助读者学习汇编语言程序设计,达到入门和提高。讲座共分四讲:第一讲 介绍一个完整的源程序及其运行;第二讲 分支、循环及子程序设计举例;第三讲 汇编语言程序的调试;第四讲 汇编语言程序举例。每讲前,介绍该讲的主要内容,突出一个重点。每讲后给出要求,指出读者应掌握的知识。讲座汇集了经验,解答了学习汇编语言经常遇到的一些问题。讲座通过展示实例,通俗讲解汇编语言程序设计的方法和技巧。     

汇编语言基本概念和程序的结构

从本期起,《跟我学编程》栏目将分几期讲解汇编语言。通过实例讲解汇编语言程序设计、编程方法、应用技巧等。 汇编语言基本概念和程序的结构 顺序、分支与循环程序设计 子程序设计和DOS功能调用及BIOS中断调用 综合应用和程序运行及调试     

实现Turbo C与汇编语言的接口

介绍了Turbo C与汇编语言的接口技术,通过实例来说明Turbo C调用汇编子程序和Turbo C行间嵌入汇编语句的接口方法。嵌入式汇编提供了一种简单而又明快的方法。使用这种方法可以直接将汇编语言代码放入C语言程序中,汇编语言代码的高速性和深层控制能力可以大大改善程序的性能,同时也避免了C语言与汇编语言的接口所固有的复杂性。     

C语言调用汇编语言子程序的研究与实践

本文介绍了被Ｃ调用的汇编语言子程序的格式，及其如何接受Ｃ程序传递给的参数值和怎样返回其返回值。在此基础上，文中详细分析了Ｃ调用汇编语言子程序的过程，最后给出了实现步骤及实例。     

使FoxBase＋调用BIOS绘图功能

针对读者此一疑问，笔者找到并仔细核查了原文，认为存在以下两方面的问题。（1）程序错误该程序没能很好地处理FoxBase＋在调用汇编语言子程序时应该注意的几项规定，一开头就错误地使用了远跳转指令；使汇编语言在返回FoxBase＋时破坏了堆栈内容，造成死机。有关FoxBase＋如何调用汇编子程序及调用时的注意事项，可参阅《电脑技术》杂志1995年第2期的《在FoxBase十中调用汇编语言子程序》一文。（2）使用错误在使用这一汇编语言子程序时也存在着错误。因为这个HTY．ASM不同于一般的完整的汇编语言源程序，它不能脱离FoxBase十而独…     

CP/M系统下FORTRAN-80程序与Z80(8080)汇编语言程序间数据传递的一种方法

关于FORTRAN-80语言程序与Z80(8080)汇编语言(或机器指令)程序间数据的传递,大体上有三种方法:其一是FORTRAN-80编译系统提供了四个附加的子程序PEEK,POKEINP,OUT,可以对Z80(8080)的机器码进行存取;其二是FORTRAN-80编译系统本身提供了一种与汇编语言子程序连接的功能,子程序的调用要通过设置指针和参数来进行。这     

编译dBASEⅢ调用汇编语言子程序及各类型参数的传递

本文讨论了编译dBASEⅢ调用汇编语言子程序的实现方法及各种类型参数传递的规律,并以具体程序实例加以说明。     

微机TURBO Pascal调用汇编子程序的方法

几种TURBO Pascal语言调用汇编语言子程序的方法,其原理和方法与其他高级语言调用汇编语言子程序有一些不同之处。下面举几个简单的例题说明其调用方法,本文中所示的全部例题均已在长城0520CH机上通过。     

微型计算机语音实验系统

<正> 一、概述本系统由8位微型计算机和12位精度模数模转换接口板组成.系统管理程序的主程序用FORTRAN语言编写,而采样和数据输出两个子程序则用汇编语言编写.通过FORTRAN与汇编交叉处理技术,来实现主程序对子程序的调用.本系统采样速率可变,在可编程放大倍率为1时,     

特殊宏处理字符&的巧用

汇编语言和高级语言不同,子程序不设虚参数(或称形式参数)。调用子程序时若需作参数传递,只好在调用子程序前将入口参数送入某些寄存器或给寻址入口参数的基址或变址寄存器赋值,出口参数的传递也需作同祥的操作,十分繁琐也容易出错。高级语言是通过虚实参数结合实现参数传递的,那么宏汇编语言能否实现虚卖结合呢?作者认为利用特殊宏处理字符＆能在某种意义上实现类似功能,至少可为汇编语言源程序的编写带来不少方便。下面是一实例。在某踉踪测量雷达伺服系统软件设计中,要求在数字引导和自动跟踪这两种工作方式中实现变带宽控     

“微机原理与汇编语言”教学改革的探索

阐述了独立学院开设微机原理与汇编语言课程的重要性,以及授课过程中采用的多媒体技术、对比教学、分组讨论等授课技术.作者根据其授课经验提出改进的授课技巧,以提高教学效果和学生的学习兴趣、加强学生分析问题和解决问题的能力,同时对教材的选择及课程的考核方式进行研究,提出具有可行性的考核方式.     

Feature-based assembly model for integration in computer-aided assembly

This paper proposes a real good approach for a computer-aided assembly (CAA) system, which makes use of software agent technology and deals with a representation of assembly features. The context of our work is the study of the engineering and manufacturing system based on the assembly features. The system never thinks like an assembly engineer, but makes it possible to support engineers in doing creative methodology, and producing new ideas better than the conventional CAA.     

基于成本和并行装配的装配序列有向图求解

针对虚拟装配中装配序列规划问题,引入了有向图来描述装配过程中的零件以及零件间的装配约束关系。结合装配成本、并行装配、装配经验优化了装配关系有向图的拓扑排序算法。提出了将装配方向变化次数作为衡量装配成本的一项重要指标。提出了将单次可装配的零件数量作为装配优先方向的参考依据。文章最后给出了装配序列生成的具体算法。     

Automatic generation of assembly plans from topological assembly drawings

An automatic understanding system MAD-READER based on the techniques of image processing, pattern recognition, and artificial intelligence has been developed for mechanical engineering drawings. The principles of the system are presented, which include the methods and techniques of recognition and understanding for topological assembly drawings (TAD). A rule-based generator GEN-PLAN is devised to generate directly assembly plans from TAD assembly drawings. A variety of TAD assembly drawings has been used for testing the generator. So far, GEN-PLAN has been used to recognize TAD assembly drawings which consist of 31 part symbols, and generate their assembly plans. The present generator has shown favorable results.     

Content-based assembly search: A step towards assembly reuse

The increased use of CAD systems by product development organizations has resulted in the creation of large databases of assemblies. This explosion of assembly data is likely to continue in the future. In many situations, a text-based search alone may not be sufficient to search for assemblies and it may be desirable to search for assemblies based on the content of the assembly models. The ability to perform content-based searches on these databases is expected to help the designers in the following two ways. First, it can facilitate the reuse of existing assembly designs, thereby reducing the design time. Second, a lot of useful designs for manufacturing, and assembly knowledge are implicitly embedded in existing assemblies. Therefore a capability to locate existing assemblies and examine them can be used as a learning tool by designers to learn from the existing assembly designs. This paper describes a system for performing content-based searches on assembly databases. We identify templates for comprehensive search definitions and describe algorithms to perform content-based searches for mechanical assemblies. We also illustrate the capabilities of our system through several examples.     

基于装配顺序的飞机装配容差信息建模

论文提出了基于装配顺序的装配容差信息建模方法,以装配仿真路径规划 的装配顺序为基础,提取装配体中各零件的特征约束关系及相关的关键特征,进而获取组成 环容差信息,建立装配容差信息模型。该模型考虑了装配顺序对装配误差累积过程的影响, 减少了人工容差信息建模繁琐的交互操作,提高了装配容差信息的建模质量。基于DELMIA 平台开发了飞机装配仿真系统。该系统已在工程上成功应用,提高了飞机装配仿真的效率, 减少了飞机实际装配生产中的出错率。     

型腔体组件装配尺寸检测技术分析与运用

为解决型腔体组件装配尺寸的检测问题,以某枪型的型腔体组件为例,分析该型腔体组件的结构特点,设计组合型检测装置,实现准确检测目的.归纳总结了型腔体组件装配尺寸检测技术运用过程中检测装置的设计要领,采用设计与被测型腔体组件相匹配的组合型检测装置,有效解决了型腔体组件装配尺寸检测过程中的定位困难、操作繁琐、检测准确性差等问题.该检测技术对确保型腔体组件装配尺寸的检测稳定性、检测可操作性、检测准确性等方面具有现实的指导意义.     

Intelligent robotic assembly

It is normal when programming a robotic manipulator to provide the end effector's orientation and position at the pick up and drop off locations. Additional sensory information and intelligence is needed, however, to detect the presence of a part as well as its location if the assembly site cannot be controlled precisely by employing expensive jigs or fixtures. This paper investigates, for this purpose, the application of solely an inexpensive laser sensor mounted unobtrusively to the end effector of a CRS robot having customized hardware and open software. Data from the sensor is converted into a single “Feature Value Vector” to recognize a part and accurately determine its location by using a neural network and back propagation training. The procedure's viability is tested by assembling a set of tightly meshing gears under poor ambient lighting.