FPGA Prototyping by VHDL Examples: Xilinx MicroBlaze MCS SoC

FPGA Prototyping by VHDL Examples: Xilinx Spartan-3 Version

Digital Design Using Digilent FPGA Boards: VHDL / Vivado Edition

Digital System Design with FPGA: Implementation Using Verilog and VHDL (ELECTRONICS)

State Machines using VHDL: FPGA Implementation of Serial Communication and Display Protocols