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The design of Microprocessors Computer Architectures remains as a fundamentalcourse in Computer Science and Computer Engineering. The technology andorganization inside microprocessors have changed quite fast in the last twentyyears. That change has increased the information handled in class, difficultingthe teaching/learning process among students. Although there are tools, mainlysimulators, available to exemplify abstract concepts during the course, thesetools have not come along with the technology. The computer architecture groupof the Centro de Investigaci\'on en Computaci\'on at the IPN Mexico is workingon a project called Lagarto to create an open computing platform for researchand education to simplify the understanding of fundamental concepts involved incomputer architecture and operating systems. This paper introduces Lagarto, oursoft-core-processor micro-architecture. It has a scalar pipeline structure andexecutes a full MIPS 32 R6 ISA [9] [10] and includes an MMU to support modernOperative Systems. The complete design has been described using Verilog HDL andis fully synthesizable in an FPGA. Additionally, this work shows different waysto use and test the microprocessor with codes written in either assemblylanguage or C language. We show that the Lagarto project allows students toincorporate during the course not only the traditional model of visualizingtheoretical knowledge in a practical exercise through simulators but alsointegrate into the teaching process the RTL design to build the MicroprocessorArchitecture.

Lagarto I-Una plataforma hardware/software de arquitectura de computadoras para la academia e investigaci\'on