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In this paper a microprogrammable-processor teaching tool and its FPGA implementation are presented. The processor is based on a classical Am2900 architecture and is implemented in the popular Xilinx Foundation" environment. The tool helps electrical and computer engineering students to become familiar with microprogramming through development of their own instruction sets and experiments with signal flow within a processor. In addition to simulation, the complete configuration can be run on a Xilinx 4010XL FPGA. In the paper a short description of the tool is provided.