Instruction driven CPU in the FPGA structure

The paper presents the design of processors embedded in an FPGA structure. The type of processor is determined by the preset instruction list. Each instruction is implemented as one functional block attached to a common bus. The processor contains two additional blocks: one contains a common register block and second is responsible for the fetch of the instruction from the program memory. To design the processor, one can choose the instruction set from the library of instructions components. The library is a set of VHDL descriptions of all possible instructions.