ZtCore: Zero-waste tiny core for real-time control within FPGA

This paper presents a stack based, 4 bit instruction set soft core, named ZtCore. Z stands for Zero waste, which means it possesses high code density and efficient run time behavior. T stands for tiny, which means its resources consumption is low. In this paper, the architecture of ZtCore is described, as well as its implementation. Meanwhile, some evaluations about its performance are presented, which well exhibit ZtCores efficiency in logic control.