• Journal of Industrial Technology
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• v.30 no.B
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• pp.119-123
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• 2010

LC-3 is an educational microprocessor for processor logic design, instruction execution fundamentals, and assembly language programming. This paper presents an IDE software, LIDE (LC-3 Integrated Development Environment), which integrates assembly program editor, LC-3 assembler, and LC-3 simulator.

• Communications of the Korean Institute of Information Scientists and Engineers
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• v.4 no.2
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• pp.65-73
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• 1986

The PM language is a Compiler writing language which syntax- directly translates a high level language into a intermediate language of matrix form. The PM assembler translates the PM language into recursive subroutines which test input strings or output intermediate terms or call another subroutines. A large subset of PASCAL compiler was written in the PM language.

• Journal of the Korean Institute of Telematics and Electronics
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• v.16 no.3
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• pp.36-48
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• 1979

HP 2100 S computer의 disc operating system 을 사용한 본cross-assembler는 alpha-minicomputer 의 assembly language program을 source 입력으로 하여 이 alpha-computer 에 의한 실행 (execution)을 목적으로 16진수 code의 등가 object program 을 출력토록 설계되어 있다.

• 전기의세계
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• v.27 no.1
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• pp.10-19
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• 1978

Microprocessor의 출현은 전자계산기 구조에 일대혁명을 일으볐으며 최근 몇년간 microcomputer가 세게적인 화제의 초점을 이루고 있고 그 응용은 극히 강력한 기대와 관심을 불러 일으키고 있다. Microcomputer의 가장 큰 특징은 micrs computer 자체가 한 system의 component로 사용될 수 있다는 점이며 application software의 개발여하에 따라 무한한 가능성을 약속해 주고 있다. 본 논문에서는 M6800 application software를 개발하기 위하여 M6800 crossassembler를 작성하였다. M6800은 Motorola에서 개발한 micrs computer로 전세계적으로 가장 널리 사용되고 있는 것 중의 하나이다. 본 논문의 2장의 첫 부분에서는 M6800 assembly language가 소개되고 두번째 부분에서는 cross-assembler의 기본적인 특성이 기술되고 있다.

• ETRI Journal
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• v.25 no.6
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• pp.464-474
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• 2003

Component-based development leverages software reusability and reduces development costs. Enterprise JavaBeans (EJB) is a component model developed to reduce the complexity of software development and to facilitate reuse of components. However, EJB does not support component assembly by a plug-and-play technique due to the hard-wired composition at the code level. To cope with this problem, an architecture for EJB component assembly is defined at the abstract level and the inconsistency between the system architecture and its implementation must be eliminated at the implementation level. We propose a component-based application development tool named the COBALT assembler that supports the design and implementation of EJB component assembly by a plug-and-play technique based on the architecture style. The system architecture is first defined by the Architecture Description Language (ADL). The wrapper code and glue code are then generated for the assembly. After the consistency between the architecture and its implementation is checked, the assembled EJB components are deployed in an application server as a new composite component. We use the COBALT assembler for a shopping mall system and demonstrate that it can promote component reuse and leverage the system maintainability.

• Proceedings of the Korea Information Processing Society Conference
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• 2008.11a
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• pp.843-845
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• 2008

CE (Consumer Electronics) 시장에서 Embedded System 은 time-to-market 이라는 개념이 나날이 중요해 지고 있다. 시스템의 중심인 core processor 에 대하여 지원하는 여러 가지 software toolkit 의 빠른 개발은 무엇보다 중요해지고 있다. 이 논문에서는 GNU Binutils 를 기반으로 ADL 을 이용하여 Embedded system의 core processor 를 위하여 신속한 Assembler 와 Linker 를 개발하는 플랫폼을 개발하였다. 이 플랫폼은 서울대학교 소프트웨어 최적화 연구실에서 개발한 ADL (Architecture Description Language)[1] 을 이용하여 core processor 를 기술하면 자동으로 Assembler 와 Link 를 생성해주는 시스템이다.

• The Journal of the Acoustical Society of Korea
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• v.31 no.6
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• pp.367-372
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• 2012

This paper introduces noise masking algorithm for 64 channel digital hearing aid. 125 Hz spectral resolution is maintained for 64 channels from 125 Hz to 8000 Hz. The same spectral masking processing effects as the cochlea are considered and applied for the present hearing aid noise reduction processing algorithm. Theoretical algorithm has been ported into assembler language program software and been embedded into a DSP IC chip for the digital hearing aid. Some parts of noise masking software program code are explained, and the results of the real-time noise reduction are verified by electro-acoustic measurements.

• The KIPS Transactions:PartD
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• v.14D no.2
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• pp.181-190
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• 2007

In component based development, component modeling for understanding and analyzing is the important part and is used to improve reusability. Generally, components are need to be divided into two types according to their usages, where the developer and assembler are usually different. To make a good component model, a complete component and interface specification for those components are needed. And the component model needs to adept two different views of developer and assembler. In this paper, we suggest two different views of component model that is related to views from developer and assembler, and we expand UML. Also we validate the efficiency of the suggested model by developing and applying a tool for building, managing and automatic transformation.

• Proceedings of the Korean Society of Computer Information Conference
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• 2020.07a
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• pp.119-122
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• 2020

소스 코드가 없는 악성코드를 분석하거나 소프트웨어 취약점 분석을 위해 바이너리 분석이 요구된다. 바이너리 분석을 위한 도구 중 어셈블러는 사용자의 입력 없이 컴파일러 내부에서 수행되기 때문에 사용자 관점의 연구는 많지 않다. 그러나 바이너리 분석 과정 중 역어셈블과 중간언어(Intermediate Representation)의 정확성을 검증하기 위해 사용자가 어셈블리어를 입력하여 결과를 확인할 수 있는 어셈블러가 요구된다. 본 논문에서는 어셈블리어를 바이너리 코드로 변환하는 어셈블러 도구를 함수형 언어인 F#으로 구현하여 어셈블리 과정을 효율적으로 설계한 어셈블러 도구를 제안한다. F#의 강력한 패턴 매칭 기능을 사용하여 수백개의 명령어를 일괄적이고 직관적으로 처리하는 과정을 설계하고 구현하였다.

• Journal of the Korea Computer Industry Society
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• v.3 no.8
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• pp.963-980
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• 2002

Software reengineering is making various research for solutions against problem of maintain existing systems. Reengineering has a meaning of development of software on exizting systems through the reverse engineering auf forward engineering. Most of the important concepts used in reengineering is composition that is restructuring of the existing objects. Is there a compiler that can compile a program written in a traditional procedural language (like C or Pascal) and generate a Java bytecode, rather than an executable code that runs oかy on the machine it was compiled (such as an a.out file on a Unix machine)\ulcorner This type of compiler may be very handy for today's computing environment of heterogeneous networks. In this paper we present a software system that does this job at the binary-to-binary level. It takes the compiled binary code of a procedural language and translates it into Java bytecode. To do this, we first translate into an assembler code called Jasmin [7] that is a human-readable representation of Java bytecode. Then the Jasmin assembler converts it into real Java bytecode. The system is not a compiler because it does not start at the source level. We believe this kind of translator is even more useful than a compiler because most of the executable code that is available for sharing does not come with source programs. Of course, it works only if the format of the executable binary code is known. This translation process consists of three major stages: (1) analysis stage that identifies the language constructs in the given binary code, (2) initialization stage where variables and objects are located, classified, and initialized, and (3) mapping stage that maps the given binary code into a Jasmin assembler code that is then converted to Java bytecode.