Design and Implementation of a Debugger for MC680020 Based Educational Computer Board.

摘要

A debugger has been designed and implemented to debug MC68020 assembly language programs which run on an MC68020-based Educational Computer Board (ECB). The debugger consists of two physically separate modules and runs on both a Macintosh and on the ECB. The debugger and the ECB communicate via an RS232 interface at a Baud rate of 9600. In addition to basic debugger commands for the MC68020, the debugger also supports commands which enable the user to examine or modify the MC68881 Coprocessor's registers. An important feature is that it is user-friendly. It utilizes pull-down menus, where the user can select and execute the desired command simply by clicking the mouse. This debugger and a LightspeedC compiler provides the user with an integrated environment, where he or she can edit, assemble and debug assembly language programs. Applications of this software tool, and the accompanying ECB, can be used for both research and teaching. For example, it can replace the current system that supports the Naval Postgraduate School course EC2800. Keywords: Theses. (kr)