The goal of this thesis study is to develop a simulator toolkit for Motorola&rsquo / s 8-bit microcontroller MC6811. The toolkit contains a cross-assembler to obtain object code from the source code and a simulator to run the object code. Written document of this thesis study describes the properties of the MC6811 microcontroller and its assembly language. In addition, the document describes the cross-assembler and simulator parts of the toolkit with details. In the cross-assembler part of the toolkit, parsing of the source Code and processing of the parsed information is studied. The simulator part studies the execution of the object code generated by the crossassembler. The execution of each instruction and main functions of the microcontroller can be observed from a Graphical User Interface (GUI). The Central Processing Unit (CPU), the busses, ports and interrupts of the microcontroller are included into the GUI. C++ programming language is used to develop and to implement the toolkit.

The Altair 680b Cross-Assembler is a program written in the Nova Assembly Language. It can be used to assemble Altair 680b assembly language programs. The object code can be punched on paper-tape for execution on the Altair 680b microcomputer. This report describes the design and working of the Cross-Assembler. A program listing and a few sample runs are also included. / Thesis / Master of Science (MSc)

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This thesis describes the design of the universal assembler that represents a part of the Lissom project. You will be provided with the description of the assembler architectures and their usual tasks. Special attention is paid to GNU assembler. Designed assembler consists of the fixed and the generated part. The generated part is created automatically from the description of instruction set, that is defined using architecture and instructions set description language ISAC. Using this approach, it is possible to change assembler target architecture automatically. The second part of thesis describes the Parserlib2 library implementation that is a part of the Lissom project and provides the information about the target instruction set for an assembler generator.